{"id":120703,"date":"2025-11-11T10:00:00","date_gmt":"2025-11-11T03:00:00","guid":{"rendered":"https:\/\/tino.vn\/blog\/?p=120703"},"modified":"2025-12-23T17:25:43","modified_gmt":"2025-12-23T10:25:43","slug":"langchain-la-gi","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/langchain-la-gi\/","title":{"rendered":"LangChain l\u00e0 g\u00ec? Gi\u1ea3i m\u00e3 Framework &#8220;ch\u1ea5p c\u00e1nh&#8221; cho \u1ee9ng d\u1ee5ng AI (LLM)"},"content":{"rendered":"\n<p><strong>C\u00e1c m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef l\u1edbn (LLM) tuy c\u1ef1c k\u1ef3 th\u00f4ng minh, nh\u01b0ng ch\u00fang v\u1ed1n b\u1ecb &#8220;nh\u1ed1t&#8221; trong m\u1ed9t th\u1ebf gi\u1edbi d\u1eef li\u1ec7u gi\u1edbi h\u1ea1n v\u00e0 kh\u00f4ng th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi b\u00ean ngo\u00e0i. Ch\u00fang kh\u00f4ng th\u1ec3 duy\u1ec7t web, kh\u00f4ng th\u1ec3 truy c\u1eadp file c\u1ee7a b\u1ea1n v\u00e0 c\u0169ng kh\u00f4ng th\u1ec3 g\u1ecdi c\u00e1c API. LangChain ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a gi\u1ea3i quy\u1ebft b\u00e0i to\u00e1n \u0111\u00f3. V\u1eady LangChain l\u00e0 g\u00ec? C\u00f3 nh\u1eefng t\u00ednh n\u0103ng n\u00e0o n\u1ed5i b\u1eadt? C\u00f9ng Tino kh\u00e1m ph\u00e1 qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!<\/strong><\/p>\n\n\n\n<h2 id=\"Gi\u1edbi_thi\u1ec7u_\u0111\u00f4i_n\u00e9t_v\u1ec1_LangChain\"><a id=\"post-120703-_1o9bj66759ac\"><\/a>Gi\u1edbi thi\u1ec7u \u0111\u00f4i n\u00e9t v\u1ec1 LangChain<\/h2>\n\n\n\n<h3 id=\"LangChain_l\u00e0_g\u00ec?\"><a id=\"post-120703-_mbblajakc4fb\"><\/a><strong>LangChain l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.langchain.com\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.langchain.com\/\" rel=\"noreferrer noopener nofollow\">LangChain <\/a>l\u00e0 m\u1ed9t framework m\u00e3 ngu\u1ed3n m\u1edf do LangChain, Inc. ph\u00e1t tri\u1ec3n. Framework n\u00e0y c\u00f3 ch\u1ee9c n\u0103ng h\u1ed7 tr\u1ee3 l\u1eadp tr\u00ecnh vi\u00ean x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef l\u1edbn (LLM) nh\u01b0 <a href=\"https:\/\/tino.vn\/blog\/model-cua-openai\/\" data-type=\"post\" data-id=\"120487\" target=\"_blank\" rel=\"noreferrer noopener\">GPT<\/a>, <a href=\"https:\/\/tino.vn\/blog\/model-cua-claude\/\" data-type=\"post\" data-id=\"120596\" target=\"_blank\" rel=\"noreferrer noopener\">Claude<\/a> hay <a href=\"https:\/\/tino.vn\/blog\/gemini-ai-la-gi\/\" data-type=\"post\" data-id=\"117094\" target=\"_blank\" rel=\"noreferrer noopener\">Gemini<\/a> m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng v\u00e0 linh ho\u1ea1t h\u01a1n.<\/p>\n\n\n\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng LLM l\u00e0 m\u1ed9t &#8220;b\u1ed9 n\u00e3o&#8221; c\u1ef1c k\u1ef3 th\u00f4ng minh nh\u01b0ng b\u1ecb &#8220;nh\u1ed1t&#8221; trong m\u1ed9t c\u0103n ph\u00f2ng v\u00e0 kh\u00f4ng bi\u1ebft g\u00ec v\u1ec1 th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i hay d\u1eef li\u1ec7u c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n. LangChain ch\u00ednh l\u00e0 &#8220;ch\u1ea5t keo&#8221; k\u1ebft n\u1ed1i &#8220;b\u1ed9 n\u00e3o&#8221; \u0111\u00f3 v\u1edbi th\u1ebf gi\u1edbi th\u1ef1c; cho ph\u00e9p LLM truy c\u1eadp v\u00e0o Internet \u0111\u1ec3 l\u1ea5y th\u00f4ng tin m\u1edbi, &#8220;\u0111\u1ecdc&#8221; c\u00e1c t\u1ec7p PDF ho\u1eb7c t\u00e0i li\u1ec7u c\u1ee7a ri\u00eang b\u1ea1n, c\u0169ng nh\u01b0 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c API kh\u00e1c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-1.png\" alt=\"LangChain l\u00e0 g\u00ec?\" class=\"wp-image-120704\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-1.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-1-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>LangChain l\u00e0 g\u00ec?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p>V\u1edbi LangChain, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra chatbot th\u00f4ng minh, tr\u1ee3 l\u00fd \u1ea3o t\u00f9y ch\u1ec9nh, c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm theo ng\u1eef ngh\u0129a ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f3 kh\u1ea3 n\u0103ng suy lu\u1eadn gi\u1ed1ng con ng\u01b0\u1eddi. \u0110\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng l\u00fd t\u01b0\u1edfng cho nh\u1eefng ai mu\u1ed1n b\u1eaft \u0111\u1ea7u ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng AI th\u1ef1c t\u1ebf m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i l\u00e0 chuy\u00ean gia v\u1ec1 h\u1ecdc m\u00e1y.<\/p>\n\n\n\n<h3 id=\"L\u00fd_do_LangChain_ra_\u0111\u1eddi\"><a id=\"post-120703-_d4hz1r17mma6\"><\/a><strong>L\u00fd do LangChain ra \u0111\u1eddi<\/strong><\/h3>\n\n\n\n<p>C\u00e1c m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef l\u1edbn (LLM) nh\u01b0 GPT-4 hay Claude l\u00e0 nh\u1eefng c\u00f4ng ngh\u1ec7 \u0111\u1ed9t ph\u00e1, nh\u01b0ng khi s\u1eed d\u1ee5ng ch\u00fang m\u1ed9t c\u00e1ch &#8220;nguy\u00ean b\u1ea3n&#8221;, ch\u00fang ta ngay l\u1eadp t\u1ee9c v\u1ea5p ph\u1ea3i nh\u1eefng gi\u1edbi h\u1ea1n c\u1ed1 h\u1eefu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ki\u1ebfn th\u1ee9c b\u1ecb gi\u1edbi h\u1ea1n:<\/strong> C\u00e1c LLM ch\u1ec9 bi\u1ebft th\u00f4ng tin \u0111\u1ebfn m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh (v\u00ed d\u1ee5 th\u00e1ng 11\/2025). Ch\u00fang ho\u00e0n to\u00e0n kh\u00f4ng bi\u1ebft g\u00ec v\u1ec1 c\u00e1c s\u1ef1 ki\u1ec7n, tin t\u1ee9c, hay d\u1eef li\u1ec7u m\u1edbi xu\u1ea5t hi\u1ec7n sau ng\u00e0y \u0111\u00f3.<\/li>\n\n\n\n<li><strong>&#8220;M\u00f9 t\u1ecbt&#8221; v\u1ec1 d\u1eef li\u1ec7u c\u00e1 nh\u00e2n:<\/strong> LLM kh\u00f4ng bi\u1ebft g\u00ec v\u1ec1 b\u1ea1n. Ch\u00fang kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o c\u00e1c t\u1ec7p tin c\u00e1 nh\u00e2n (nh\u01b0 PDF, Word), email, c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u1ed9i b\u1ed9 c\u1ee7a c\u00f4ng ty b\u1ea1n, hay b\u1ea5t k\u1ef3 ngu\u1ed3n d\u1eef li\u1ec7u ri\u00eang t\u01b0 n\u00e0o.<\/li>\n\n\n\n<li><strong>Kh\u00f4ng th\u1ec3 &#8220;h\u00e0nh \u0111\u1ed9ng&#8221;:<\/strong> LLM v\u1ec1 c\u01a1 b\u1ea3n ch\u1ec9 l\u00e0 m\u1ed9t c\u1ed7 m\u00e1y &#8220;ch\u1eef v\u00e0o, ch\u1eef ra&#8221; (text-in, text-out). Ch\u00fang kh\u00f4ng th\u1ec3 t\u1ef1 m\u00ecnh duy\u1ec7t web, th\u1ef1c hi\u1ec7n m\u1ed9t ph\u00e9p t\u00ednh to\u00e1n ph\u1ee9c t\u1ea1p (ch\u00ednh x\u00e1c), g\u1ecdi m\u1ed9t API \u0111\u1ec3 \u0111\u1eb7t v\u00e9 m\u00e1y bay hay t\u01b0\u01a1ng t\u00e1c v\u1edbi b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i n\u00e0o.<\/li>\n\n\n\n<li><strong>Kh\u00f3 ki\u1ec3m so\u00e1t v\u00e0 &#8220;\u1ea3o gi\u00e1c&#8221; (Hallucination):<\/strong> Khi \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 ph\u1ee9c t\u1ea1p (v\u00ed d\u1ee5: &#8220;Vi\u1ebft m\u1ed9t b\u00e0i blog 2000 t\u1eeb v\u1ec1 ch\u1ee7 \u0111\u1ec1 X, sau \u0111\u00f3 t\u00f3m t\u1eaft v\u00e0 d\u1ecbch sang ti\u1ebfng Nh\u1eadt&#8221;), LLM c\u00f3 th\u1ec3 l\u00e0m t\u1ed1t m\u1ed9t ph\u1ea7n nh\u01b0ng l\u1ea1i &#8220;b\u1ecba&#8221; d\u1eef li\u1ec7u ho\u1eb7c \u0111i ch\u1ec7ch h\u01b0\u1edbng \u1edf ph\u1ea7n c\u00f2n l\u1ea1i.<\/li>\n<\/ul>\n\n\n\n<p>LangChain ra \u0111\u1eddi ch\u00ednh l\u00e0 \u0111\u1ec3 gi\u1ea3i quy\u1ebft t\u1ea5t c\u1ea3 nh\u1eefng v\u1ea5n \u0111\u1ec1 tr\u00ean. Framework n\u00e0y \u0111\u01b0\u1ee3c sinh ra t\u1eeb nhu c\u1ea7u &#8220;m\u1edf kh\u00f3a&#8221; ti\u1ec1m n\u0103ng th\u1ef1c s\u1ef1 c\u1ee7a LLM, bi\u1ebfn ch\u00fang t\u1eeb nh\u1eefng &#8220;b\u1ed9 n\u00e3o&#8221; th\u00f4ng minh nh\u01b0ng b\u1ecb c\u00f4 l\u1eadp th\u00e0nh nh\u1eefng &#8220;t\u00e1c nh\u00e2n&#8221; (Agent) c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 h\u00e0nh \u0111\u1ed9ng trong th\u1ebf gi\u1edbi th\u1ef1c.<\/p>\n\n\n\n<h2 id=\"6_th\u00e0nh_ph\u1ea7n_c\u1ed1t_l\u00f5i_c\u1ee7a_LangChain\"><a id=\"post-120703-_v4zye2hgiw5k\"><\/a>6 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a LangChain<\/h2>\n\n\n\n<h3 id=\"1._Models_(M\u00f4_h\u00ecnh):_Giao_di\u1ec7n_k\u1ebft_n\u1ed1i_v\u1edbi_&#8220;b\u1ed9_n\u00e3o&#8221;_AI\"><a id=\"post-120703-_8ba4ynrst9p4\"><\/a><strong>1. Models (M\u00f4 h\u00ecnh): Giao di\u1ec7n k\u1ebft n\u1ed1i v\u1edbi &#8220;b\u1ed9 n\u00e3o&#8221; AI<\/strong><\/h3>\n\n\n\n<p>\u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 b\u1ea3n th\u00e2n m\u00f4 h\u00ecnh AI, m\u00e0 l\u00e0 l\u1edbp giao di\u1ec7n gi\u00fap LangChain &#8220;n\u00f3i chuy\u1ec7n&#8221; v\u1edbi r\u1ea5t nhi\u1ec1u lo\u1ea1i m\u00f4 h\u00ecnh kh\u00e1c nhau m\u1ed9t c\u00e1ch th\u1ed1ng nh\u1ea5t. B\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i vi\u1ebft code ri\u00eang cho OpenAI, r\u1ed3i l\u1ea1i vi\u1ebft code kh\u00e1c cho Google Gemini hay Claude. LangChain cung c\u1ea5p 3 lo\u1ea1i giao di\u1ec7n m\u00f4 h\u00ecnh ch\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LLMs:<\/strong> Giao di\u1ec7n cho c\u00e1c m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef c\u01a1 b\u1ea3n (nh\u1eadn v\u0103n b\u1ea3n v\u00e0o, tr\u1ea3 v\u0103n b\u1ea3n ra).<\/li>\n\n\n\n<li><strong>Chat Models:<\/strong> Giao di\u1ec7n cho c\u00e1c m\u00f4 h\u00ecnh chuy\u00ean v\u1ec1 h\u1ed9i tho\u1ea1i (nh\u1eadn v\u00e0o m\u1ed9t lo\u1ea1t tin nh\u1eafn c\u00f3 vai tr\u00f2 nh\u01b0 &#8220;Ng\u01b0\u1eddi d\u00f9ng&#8221;, &#8220;AI&#8221;, &#8220;H\u1ec7 th\u1ed1ng&#8221; v\u00e0 tr\u1ea3 v\u1ec1 m\u1ed9t tin nh\u1eafn).<\/li>\n\n\n\n<li><strong>Text Embedding Models:<\/strong> Giao di\u1ec7n cho c\u00e1c m\u00f4 h\u00ecnh chuy\u00ean &#8220;vector h\u00f3a&#8221; v\u0103n b\u1ea3n, bi\u1ebfn c\u00e1c con ch\u1eef th\u00e0nh c\u00e1c d\u00e3y s\u1ed1 (vector) \u0111\u1ec3 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 so s\u00e1nh s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng v\u1ec1 ng\u1eef ngh\u0129a.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"2._Prompts_(C\u00e2u_l\u1ec7nh):_Ngh\u1ec7_thu\u1eadt_&#8220;\u0111\u1eb7t_c\u00e2u_h\u1ecfi&#8221;\"><a id=\"post-120703-_ru7s0s1a7yuw\"><\/a><strong>2. Prompts (C\u00e2u l\u1ec7nh): Ngh\u1ec7 thu\u1eadt &#8220;\u0111\u1eb7t c\u00e2u h\u1ecfi&#8221;<\/strong><\/h3>\n\n\n\n<p>Trong LangChain, &#8220;Prompt&#8221; kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi th\u00f4. \u0110\u00e2y l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n m\u1ea1nh m\u1ebd gi\u00fap b\u1ea1n <strong>qu\u1ea3n l\u00fd v\u00e0 t\u1ed1i \u01b0u h\u00f3a<\/strong> c\u00e2u l\u1ec7nh \u0111\u1ea7u v\u00e0o cho LLM.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Prompt Templates:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t &#8220;c\u00f4ng th\u1ee9c&#8221; t\u1ea1o ra c\u00e2u l\u1ec7nh. Thay v\u00ec vi\u1ebft &#8220;Th\u1ee7 \u0111\u00f4 c\u1ee7a Vi\u1ec7t Nam l\u00e0 g\u00ec?&#8221;, b\u1ea1n t\u1ea1o m\u1ed9t khu\u00f4n m\u1eabu: &#8220;Th\u1ee7 \u0111\u00f4 c\u1ee7a {t\u00ean_qu\u1ed1c_gia} l\u00e0 g\u00ec?&#8221;. Sau \u0111\u00f3, b\u1ea1n ch\u1ec9 c\u1ea7n \u0111\u01b0a bi\u1ebfn t\u00ean_qu\u1ed1c_gia v\u00e0o.<\/li>\n\n\n\n<li><strong>Example Selectors:<\/strong> Cho ph\u00e9p b\u1ea1n t\u1ef1 \u0111\u1ed9ng ch\u00e8n th\u00eam c\u00e1c v\u00ed d\u1ee5 (few-shot learning) v\u00e0o c\u00e2u l\u1ec7nh \u0111\u1ec3 &#8220;h\u01b0\u1edbng d\u1eabn&#8221; LLM tr\u1ea3 l\u1eddi \u0111\u00fang \u00fd b\u1ea1n mu\u1ed1n.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-2.png\" alt=\"6 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a LangChain\" class=\"wp-image-120705\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-2.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-2-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>6 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a LangChain<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"3._Chains_(Chu\u1ed7i):_&#8220;Tr\u00e1i_tim&#8221;_c\u1ee7a_LangChain\"><a id=\"post-120703-_us4id8c9guec\"><\/a><strong>3. Chains (Chu\u1ed7i): &#8220;Tr\u00e1i tim&#8221; c\u1ee7a LangChain<\/strong><\/h3>\n\n\n\n<p>\u0110\u00fang nh\u01b0 t\u00ean g\u1ecdi (&#8220;Chain&#8221; = Chu\u1ed7i), \u0111\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i nh\u1ea5t. Chains cho ph\u00e9p b\u1ea1n k\u1ebft n\u1ed1i nhi\u1ec1u b\u01b0\u1edbc x\u1eed l\u00fd l\u1ea1i v\u1edbi nhau. M\u1ed9t chain \u0111\u01a1n gi\u1ea3n nh\u1ea5t (v\u00ed d\u1ee5: LLMChain) ch\u1ec9 bao g\u1ed3m: <em>L\u1ea5y \u0111\u1ea7u v\u00e0o -&gt; \u0110\u1ecbnh d\u1ea1ng b\u1eb1ng Prompt Template -&gt; G\u1eedi cho Model -&gt; Nh\u1eadn k\u1ebft qu\u1ea3<\/em>.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, s\u1ee9c m\u1ea1nh th\u1ef1c s\u1ef1 n\u1eb1m \u1edf vi\u1ec7c k\u1ebft n\u1ed1i c\u00e1c chain ph\u1ee9c t\u1ea1p h\u01a1n: l\u1ea5y k\u1ebft qu\u1ea3 c\u1ee7a chain n\u00e0y l\u00e0m \u0111\u1ea7u v\u00e0o cho chain kia, t\u1ea1o ra m\u1ed9t quy tr\u00ecnh (workflow) t\u1ef1 \u0111\u1ed9ng h\u00f3a ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n<h3 id=\"4._Retrieval_(Truy_xu\u1ea5t):_Cho_ph\u00e9p_LLM_&#8220;\u0111\u1ecdc&#8221;_d\u1eef_li\u1ec7u_c\u1ee7a_b\u1ea1n\"><a id=\"post-120703-_19ybf9ebqnc9\"><\/a><strong>4. Retrieval (Truy xu\u1ea5t): Cho ph\u00e9p LLM &#8220;\u0111\u1ecdc&#8221; d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n<\/strong><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n gi\u00fap gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 &#8220;m\u00f9 th\u00f4ng tin&#8221; c\u1ee7a LLM. Retrieval l\u00e0 h\u1ea1t nh\u00e2n c\u1ee7a k\u1ef9 thu\u1eadt <strong>RAG (Retrieval-Augmented Generation)<\/strong> v\u00e0 bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Document Loaders (B\u1ed9 t\u1ea3i t\u00e0i li\u1ec7u):<\/strong> &#8220;\u0110\u1ecdc&#8221; d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u ngu\u1ed3n (PDF, .txt, website, c\u01a1 s\u1edf d\u1eef li\u1ec7u&#8230;).<\/li>\n\n\n\n<li><strong>Document Transformers (B\u1ed9 bi\u1ebfn \u0111\u1ed5i):<\/strong> &#8220;C\u1eaft nh\u1ecf&#8221; (chunking) c\u00e1c t\u00e0i li\u1ec7u l\u1edbn th\u00e0nh c\u00e1c \u0111o\u1ea1n nh\u1ecf h\u01a1n \u0111\u1ec3 LLM d\u1ec5 &#8220;ti\u00eau h\u00f3a&#8221;.<\/li>\n\n\n\n<li><strong>Vector Stores (Kho l\u01b0u tr\u1eef Vector):<\/strong> N\u01a1i l\u01b0u tr\u1eef c\u00e1c \u0111o\u1ea1n t\u00e0i li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c &#8220;vector h\u00f3a&#8221; (b\u1eb1ng Embedding Models).<\/li>\n\n\n\n<li><strong>Retrievers (B\u1ed9 truy xu\u1ea5t):<\/strong> Khi c\u00f3 c\u00e2u h\u1ecfi, b\u1ed9 truy xu\u1ea5t s\u1ebd nhanh ch\u00f3ng t\u00ecm ki\u1ebfm trong kho vector \u0111\u1ec3 l\u1ea5y ra c\u00e1c \u0111o\u1ea1n t\u00e0i li\u1ec7u &#8220;li\u00ean quan nh\u1ea5t&#8221; v\u00e0 cung c\u1ea5p ch\u00fang cho LLM l\u00e0m ng\u1eef c\u1ea3nh.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"5._Agents_(T\u00e1c_t\u1eed):_Trao_quy\u1ec1n_cho_LLM_t\u1ef1_suy_ngh\u0129_v\u00e0_h\u00e0nh_\u0111\u1ed9ng\"><a id=\"post-120703-_plnmajgyd9gl\"><\/a><strong>5. Agents (T\u00e1c t\u1eed): Trao quy\u1ec1n cho LLM t\u1ef1 suy ngh\u0129 v\u00e0 h\u00e0nh \u0111\u1ed9ng<\/strong><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n th\u00fa v\u1ecb v\u00e0 ph\u1ee9c t\u1ea1p nh\u1ea5t. N\u1ebfu &#8220;Chain&#8221; l\u00e0 m\u1ed9t quy tr\u00ecnh b\u1ea1n \u0111\u1ecbnh s\u1eb5n (b\u01b0\u1edbc 1, 2, 3), th\u00ec &#8220;Agent&#8221; l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u00e0 b\u1ea1n <strong>trao quy\u1ec1n cho LLM t\u1ef1 quy\u1ebft \u0111\u1ecbnh<\/strong> ph\u1ea3i l\u00e0m g\u00ec.<\/p>\n\n\n\n<p>B\u1ea1n cung c\u1ea5p cho Agent m\u1ed9t <strong>m\u1ee5c ti\u00eau<\/strong> (v\u00ed d\u1ee5: &#8220;Th\u1eddi ti\u1ebft \u1edf TP. H\u1ed3 Ch\u00ed Minh ng\u00e0y mai th\u1ebf n\u00e0o v\u00e0 gi\u00e1 c\u1ed5 phi\u1ebfu VinFast h\u00f4m nay bao nhi\u00eau?&#8221;) v\u00e0 m\u1ed9t <strong>b\u1ed9 c\u00f4ng c\u1ee5 (Tools)<\/strong> (v\u00ed d\u1ee5: <em>Tool 1: T\u00ecm ki\u1ebfm Google<\/em>, <em>Tool 2: API th\u1eddi ti\u1ebft<\/em>, <em>Tool 3: API ch\u1ee9ng kho\u00e1n<\/em>).<\/p>\n\n\n\n<p>Agent s\u1ebd s\u1eed d\u1ee5ng LLM l\u00e0m &#8220;b\u1ed9 n\u00e3o&#8221; \u0111\u1ec3 suy lu\u1eadn: &#8220;\u00c0, v\u1edbi c\u00e2u n\u00e0y, t\u00f4i c\u1ea7n d\u00f9ng API th\u1eddi ti\u1ebft cho v\u1ebf \u0111\u1ea7u, v\u00e0 API ch\u1ee9ng kho\u00e1n cho v\u1ebf sau&#8221;, sau \u0111\u00f3 n\u00f3 t\u1ef1 g\u1ecdi c\u00e1c tool \u0111\u00f3 v\u00e0 t\u1ed5ng h\u1ee3p c\u00e2u tr\u1ea3 l\u1eddi.<\/p>\n\n\n\n<h3 id=\"6._Memory_(B\u1ed9_nh\u1edb):_Gi\u00fap_Chatbot_&#8220;nh\u1edb&#8221;\"><a id=\"post-120703-_17ue4zhrjdxs\"><\/a><strong>6. Memory (B\u1ed9 nh\u1edb): Gi\u00fap Chatbot &#8220;nh\u1edb&#8221;<\/strong><\/h3>\n\n\n\n<p>V\u1ec1 c\u01a1 b\u1ea3n, LLM l\u00e0 &#8220;v\u00f4 tr\u00ed&#8221; (stateless), t\u1ee9c l\u00e0 ch\u00fang qu\u00ean ngay l\u1eadp t\u1ee9c cu\u1ed9c h\u1ed9i tho\u1ea1i tr\u01b0\u1edbc \u0111\u00f3. Th\u00e0nh ph\u1ea7n <strong>Memory<\/strong> c\u1ee7a LangChain gi\u1ea3i quy\u1ebft \u0111i\u1ec1u n\u00e0y. N\u00f3 cung c\u1ea5p m\u1ed9t c\u00e1ch th\u1ee9c \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 <strong>l\u01b0u tr\u1eef v\u00e0 truy xu\u1ea5t l\u1ecbch s\u1eed tr\u00f2 chuy\u1ec7n<\/strong>, sau \u0111\u00f3 t\u1ef1 \u0111\u1ed9ng ch\u00e8n c\u00e1c tin nh\u1eafn c\u0169 v\u00e0o b\u1ed1i c\u1ea3nh (context) c\u1ee7a c\u00e2u h\u1ecfi m\u1edbi. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra \u1ea3o gi\u00e1c r\u1eb1ng b\u1ea1n \u0111ang n\u00f3i chuy\u1ec7n v\u1edbi m\u1ed9t AI &#8220;nh\u1edb&#8221; \u0111\u01b0\u1ee3c nh\u1eefng g\u00ec b\u1ea1n n\u00f3i.<\/p>\n\n\n\n<h2 id=\"LangChain_ho\u1ea1t_\u0111\u1ed9ng_nh\u01b0_th\u1ebf_n\u00e0o?_(v\u00ed_d\u1ee5_minh_h\u1ecda)\"><a id=\"post-120703-_ngfuu49k5kb4\"><\/a>LangChain ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? (v\u00ed d\u1ee5 minh h\u1ecda)<\/h2>\n\n\n\n<p>H\u00e3y xem m\u1ed9t v\u00ed d\u1ee5 minh h\u1ecda: <strong>X\u00e2y d\u1ef1ng Chatbot &#8220;H\u1ecfi \u0111\u00e1p tr\u00ean file PDF&#8221;.<\/strong><\/p>\n\n\n\n<p>Gi\u1ea3 s\u1eed b\u1ea1n c\u00f3 m\u1ed9t file PDF 200 trang v\u1ec1 lu\u1eadt t\u00e0i ch\u00ednh v\u00e0 b\u1ea1n mu\u1ed1n h\u1ecfi: &#8220;<em>M\u1ee9c ph\u1ea1t t\u1ed1i \u0111a cho h\u00e0nh vi X l\u00e0 bao nhi\u00eau?<\/em>&#8221; LLM kh\u00f4ng th\u1ec3 t\u1ef1 \u0111\u1ecdc file PDF n\u00e0y, v\u00ec v\u1eady n\u00f3 kh\u00f4ng th\u1ec3 tr\u1ea3 l\u1eddi.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 c\u00e1ch LangChain ho\u1ea1t \u0111\u1ed9ng, chia l\u00e0m 2 giai \u0111o\u1ea1n:<\/p>\n\n\n\n<h3 id=\"Giai_\u0111o\u1ea1n_1:_&#8220;H\u1ecdc&#8221;_t\u00e0i_li\u1ec7u_(Indexing)\"><a id=\"post-120703-_z7f1k4a4o2ic\"><\/a><strong>Giai \u0111o\u1ea1n 1: &#8220;H\u1ecdc&#8221; t\u00e0i li\u1ec7u (Indexing)<\/strong><\/h3>\n\n\n\n<p>Giai \u0111o\u1ea1n n\u00e0y gi\u1ed1ng nh\u01b0 vi\u1ec7c b\u1ea1n &#8220;d\u1ea1y&#8221; cho h\u1ec7 th\u1ed1ng v\u1ec1 d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh. N\u00f3 ch\u1ec9 ch\u1ea1y m\u1ed9t l\u1ea7n khi b\u1ea1n t\u1ea3i file l\u00ean.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>T\u1ea3i t\u00e0i li\u1ec7u (Load):<\/strong> LangChain s\u1eed d\u1ee5ng DocumentLoader \u0111\u1ec3 &#8220;\u0111\u1ecdc&#8221; to\u00e0n b\u1ed9 n\u1ed9i dung file PDF c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n<li><strong>Chia nh\u1ecf (Split):<\/strong> File PDF qu\u00e1 l\u1edbn \u0111\u1ec3 \u0111\u01b0a v\u00e0o LLM c\u00f9ng m\u1ed9t l\u00fac (gi\u1edbi h\u1ea1n context). LangChain d\u00f9ng TextSplitter \u0111\u1ec3 &#8220;c\u1eaft&#8221; 200 trang \u0111\u00f3 th\u00e0nh h\u00e0ng tr\u0103m \u0111o\u1ea1n nh\u1ecf (v\u00ed d\u1ee5: m\u1ed7i \u0111o\u1ea1n 500 ch\u1eef) nh\u01b0ng v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c ng\u1eef ngh\u0129a.<\/li>\n\n\n\n<li><strong>Vector h\u00f3a (Embed):<\/strong> LangChain d\u00f9ng m\u1ed9t Embedding Model \u0111\u1ec3 bi\u1ebfn m\u1ed7i \u0111o\u1ea1n v\u0103n b\u1ea3n (ch\u1eef) th\u00e0nh m\u1ed9t d\u00e3y s\u1ed1 (g\u1ecdi l\u00e0 vector). Nh\u1eefng vector n\u00e0y \u0111\u1ea1i di\u1ec7n cho <em>\u00fd ngh\u0129a<\/em> ng\u1eef ngh\u0129a c\u1ee7a \u0111o\u1ea1n v\u0103n \u0111\u00f3. Nh\u1eefng \u0111o\u1ea1n v\u0103n c\u00f3 \u00fd ngh\u0129a gi\u1ed1ng nhau s\u1ebd c\u00f3 vector g\u1ea7n gi\u1ed1ng nhau.<\/li>\n\n\n\n<li><strong>L\u01b0u tr\u1eef (Store):<\/strong> T\u1ea5t c\u1ea3 c\u00e1c vector n\u00e0y \u0111\u01b0\u1ee3c l\u01b0u v\u00e0o m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1eb7c bi\u1ec7t g\u1ecdi l\u00e0 VectorStore (kho l\u01b0u tr\u1eef vector). \u0110\u00e2y ch\u00ednh l\u00e0 &#8220;b\u1ed9 nh\u1edb&#8221; v\u1ec1 t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-3.png\" alt=\"LangChain ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? \" class=\"wp-image-120706\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-3.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-3-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>LangChain ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? <\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Giai_\u0111o\u1ea1n_2:_&#8220;Tr\u1ea3_l\u1eddi&#8221;_c\u00e2u_h\u1ecfi_(Querying)\"><a id=\"post-120703-_pp1fyt70rgfi\"><\/a><strong>Giai \u0111o\u1ea1n 2: &#8220;Tr\u1ea3 l\u1eddi&#8221; c\u00e2u h\u1ecfi (Querying)<\/strong><\/h3>\n\n\n\n<p>Giai \u0111o\u1ea1n n\u00e0y x\u1ea3y ra m\u1ed7i khi ng\u01b0\u1eddi d\u00f9ng \u0111\u1eb7t c\u00e2u h\u1ecfi.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Nh\u1eadn c\u00e2u h\u1ecfi:<\/strong> Ng\u01b0\u1eddi d\u00f9ng g\u00f5: &#8220;<em>M m\u1ee9c ph\u1ea1t t\u1ed1i \u0111a cho h\u00e0nh vi X l\u00e0 bao nhi\u00eau?<\/em>&#8220;<\/li>\n\n\n\n<li><strong>Vector h\u00f3a c\u00e2u h\u1ecfi:<\/strong> LangChain l\u1ea5y ch\u00ednh x\u00e1c Embedding Model (\u1edf b\u01b0\u1edbc 3) \u0111\u1ec3 bi\u1ebfn c\u00e2u h\u1ecfi n\u00e0y th\u00e0nh m\u1ed9t vector.<\/li>\n\n\n\n<li><strong>T\u00ecm ki\u1ebfm (Retrieve):<\/strong> LangChain so s\u00e1nh vector c\u1ee7a c\u00e2u h\u1ecfi v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c vector trong VectorStore (\u1edf b\u01b0\u1edbc 4 b\u00ean tr\u00ean) v\u00e0 &#8220;r\u00fat&#8221; ra, v\u00ed d\u1ee5, 5 \u0111o\u1ea1n v\u0103n b\u1ea3n g\u1ed1c (chunks) trong file PDF c\u00f3 \u00fd ngh\u0129a g\u1ea7n nh\u1ea5t v\u1edbi c\u00e2u h\u1ecfi. \u0110\u00e2y ch\u00ednh l\u00e0 &#8220;s\u1ef1 truy xu\u1ea5t&#8221; (Retrieval).<\/li>\n\n\n\n<li><strong>T\u1ea1o c\u00e2u l\u1ec7nh (Prompt):<\/strong> LangChain t\u1ef1 \u0111\u1ed9ng t\u1ea1o m\u1ed9t c\u00e2u l\u1ec7nh (prompt) m\u1edbi cho LLM theo khu\u00f4n m\u1eabu: &#8220;<code>D\u1ef1a v\u00e0o b\u1ed1i c\u1ea3nh (context) d\u01b0\u1edbi \u0111\u00e2y: [D\u00e1n v\u00e0o \u0111o\u1ea1n v\u0103n 1 v\u1eeba t\u00ecm \u0111\u01b0\u1ee3c] [D\u00e1n v\u00e0o \u0111o\u1ea1n v\u0103n 2 v\u1eeba t\u00ecm \u0111\u01b0\u1ee3c] [D\u00e1n v\u00e0o \u0111o\u1ea1n v\u0103n 3, 4, 5...], h\u00e3y tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi sau: M\u1ee9c ph\u1ea1t t\u1ed1i \u0111a cho h\u00e0nh vi X l\u00e0 bao nhi\u00eau?<\/code>&#8220;<\/li>\n\n\n\n<li><strong>H\u1ecfi LLM (Query LLM):<\/strong> LangChain g\u1eedi c\u00e2u l\u1ec7nh (prompt) &#8220;si\u00eau chi ti\u1ebft&#8221; n\u00e0y \u0111\u1ebfn cho LLM.<\/li>\n\n\n\n<li><strong>Tr\u1ea3 l\u1eddi:<\/strong> LLM \u0111\u1ecdc b\u1ed1i c\u1ea3nh \u0111\u01b0\u1ee3c cung c\u1ea5p (ch\u1ec9 v\u00e0i \u0111o\u1ea1n v\u0103n ng\u1eafn) v\u00e0 d\u1ec5 d\u00e0ng t\u1ed5ng h\u1ee3p l\u1ea1i c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c d\u1ef1a tr\u00ean th\u00f4ng tin \u0111\u00f3. Sau \u0111\u00f3m LLM s\u1ebd tr\u1ea3 l\u1eddi: &#8220;Theo t\u00e0i li\u1ec7u, m\u1ee9c ph\u1ea1t t\u1ed1i \u0111a cho h\u00e0nh vi X l\u00e0&#8230;&#8221;<\/li>\n<\/ol>\n\n\n\n<h2 id=\"\u01afu_&#8211;_nh\u01b0\u1ee3c_\u0111i\u1ec3m_khi_s\u1eed_d\u1ee5ng_LangChain\"><a id=\"post-120703-_t5o48aewqyk8\"><\/a>\u01afu &#8211; nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng LangChain<\/h2>\n\n\n\n<h3 id=\"\u01afu_\u0111i\u1ec3m\"><a id=\"post-120703-_idxz27h1lnbf\"><\/a><strong>\u01afu \u0111i\u1ec3m<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>H\u1ec7 sinh th\u00e1i l\u1edbn:<\/strong> T\u00edch h\u1ee3p s\u1eb5n h\u00e0ng tr\u0103m m\u00f4 h\u00ecnh (OpenAI, Google, Claude&#8230;), c\u00f4ng c\u1ee5 (API, Google Search) v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n\n\n\n<li><strong>T\u0103ng t\u1ed1c ph\u00e1t tri\u1ec3n:<\/strong> Gi\u00fap x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p (nh\u01b0 &#8220;chat v\u1edbi PDF&#8221; &#8211; RAG) c\u1ef1c k\u1ef3 nhanh ch\u00f3ng.<\/li>\n\n\n\n<li><strong>Linh ho\u1ea1t:<\/strong> Cho ph\u00e9p d\u1ec5 d\u00e0ng &#8220;tr\u00e1o \u0111\u1ed5i&#8221; c\u00e1c th\u00e0nh ph\u1ea7n (v\u00ed d\u1ee5: \u0111\u1ed5i m\u00f4 h\u00ecnh, \u0111\u1ed5i c\u01a1 s\u1edf d\u1eef li\u1ec7u vector) m\u00e0 kh\u00f4ng c\u1ea7n vi\u1ebft l\u1ea1i logic.<\/li>\n\n\n\n<li><strong>H\u1ed7 tr\u1ee3 Agents:<\/strong> R\u1ea5t m\u1ea1nh m\u1ebd trong vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c &#8220;T\u00e1c t\u1eed AI&#8221; t\u1ef1 ch\u1ee7, c\u00f3 kh\u1ea3 n\u0103ng suy ngh\u0129 v\u00e0 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 \u0111\u1ec3 h\u00e0nh \u0111\u1ed9ng.<\/li>\n\n\n\n<li><strong>C\u1ed9ng \u0111\u1ed3ng m\u1ea1nh:<\/strong> Nh\u1edd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c AI, LangChain c\u00f3 c\u1ed9ng \u0111\u1ed3ng \u0111\u00f3ng g\u00f3p m\u1ea1nh, nhi\u1ec1u v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 t\u00e0i nguy\u00ean h\u1ecdc t\u1eadp.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-4.png\" alt=\"\u01afu - nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng LangChain\" class=\"wp-image-120707\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-4.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-4-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>\u01afu &#8211; nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng LangChain<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Nh\u01b0\u1ee3c_\u0111i\u1ec3m\"><a id=\"post-120703-_n3u7z7vbgnq6\"><\/a><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kh\u00e1 ph\u1ee9c t\u1ea1p:<\/strong> \u0110\u01b0\u1eddng cong h\u1ecdc t\u1eadp r\u1ea5t d\u1ed1c v\u00e0 kh\u00f3 cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u.<\/li>\n\n\n\n<li><strong>Kh\u00f3 g\u1ee1 l\u1ed7i:<\/strong> Do t\u00ednh tr\u1eebu t\u01b0\u1ee3ng cao, khi m\u1ed9t &#8220;chain&#8221; b\u1ecb l\u1ed7i, vi\u1ec7c t\u00ecm ra nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 r\u1ea5t kh\u00f3 kh\u0103n.<\/li>\n\n\n\n<li><strong>Thi\u1ebfu \u1ed5n \u0111\u1ecbnh:<\/strong> C\u00e1c Agents th\u01b0\u1eddng d\u1ef1a v\u00e0o vi\u1ec7c LLM tr\u1ea3 l\u1eddi \u0111\u00fang \u0111\u1ecbnh d\u1ea1ng. Ch\u1ec9 c\u1ea7n LLM thay \u0111\u1ed5i m\u1ed9t ch\u00fat, logic c\u00f3 th\u1ec3 h\u1ecfng ngay l\u1eadp t\u1ee9c.<\/li>\n\n\n\n<li><strong>Thay \u0111\u1ed5i li\u00ean t\u1ee5c:<\/strong> Framework c\u1eadp nh\u1eadt &#8220;ch\u00f3ng m\u1eb7t&#8221;, khi\u1ebfn c\u00e1c h\u01b0\u1edbng d\u1eabn v\u00e0 code c\u0169 nhanh ch\u00f3ng b\u1ecb l\u1ed7i th\u1eddi.<\/li>\n\n\n\n<li><strong>\u0110\u1ed9 tr\u1ec5 v\u00e0 chi ph\u00ed:<\/strong> C\u00e1c chain ph\u1ee9c t\u1ea1p th\u01b0\u1eddng y\u00eau c\u1ea7u nhi\u1ec1u l\u1ea7n g\u1ecdi API \u0111\u1ebfn LLM, g\u00e2y ch\u1eadm (latency) v\u00e0 t\u1ed1n k\u00e9m chi ph\u00ed.<\/li>\n\n\n\n<li><strong>Hi\u1ec7u su\u1ea5t ch\u01b0a t\u1ed1i \u01b0u cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p: <\/strong>M\u1ed9t s\u1ed1 t\u00e1c v\u1ee5 nh\u1ecf ho\u1eb7c m\u00f4 h\u00ecnh \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 ch\u1ea1y ch\u1eadm h\u01a1n n\u1ebfu s\u1eed d\u1ee5ng LangChain v\u00ec framework n\u00e0y c\u00f3 nhi\u1ec1u l\u1edbp x\u1eed l\u00fd trung gian.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"\u1ee8ng_d\u1ee5ng_th\u1ef1c_t\u1ebf_c\u1ee7a_LangChain\"><a id=\"post-120703-_unur7kkqxzai\"><\/a>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a LangChain<\/h2>\n\n\n\n<h3 id=\"Chatbot_th\u00f4ng_minh_v\u00e0_tr\u1ee3_l\u00fd_\u1ea3o_t\u00f9y_ch\u1ec9nh\"><strong>Chatbot th\u00f4ng minh v\u00e0 tr\u1ee3 l\u00fd \u1ea3o t\u00f9y ch\u1ec9nh<\/strong><\/h3>\n\n\n\n<p>LangChain cho ph\u00e9p b\u1ea1n t\u1ea1o chatbot c\u00f3 kh\u1ea3 n\u0103ng ghi nh\u1edb ng\u1eef c\u1ea3nh v\u00e0 hi\u1ec3u d\u1eef li\u1ec7u ri\u00eang c\u1ee7a doanh nghi\u1ec7p. <br>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Chatbot ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 tra c\u1ee9u th\u00f4ng tin trong c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f4ng ty. <\/li>\n\n\n\n<li>Tr\u1ee3 l\u00fd n\u1ed9i b\u1ed9 gi\u00fap nh\u00e2n vi\u00ean t\u00ecm t\u00e0i li\u1ec7u, b\u00e1o c\u00e1o ho\u1eb7c ch\u00ednh s\u00e1ch ch\u1ec9 trong v\u00e0i gi\u00e2y.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Nh\u1edd t\u00ednh n\u0103ng <em>Memory<\/em> v\u00e0 <em>Retrieval Augmented Generation (RAG)<\/em>, chatbot kh\u00f4ng ch\u1ec9 \u201ctr\u1ea3 l\u1eddi cho hay\u201d m\u00e0 c\u00f2n ph\u1ea3n h\u1ed3i ch\u00ednh x\u00e1c theo d\u1eef li\u1ec7u th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h3 id=\"H\u1ec7_th\u1ed1ng_h\u1ecfi_\u2013_\u0111\u00e1p_theo_t\u00e0i_li\u1ec7u_(Q&amp;A_\/_RAG)\"><strong>H\u1ec7 th\u1ed1ng h\u1ecfi \u2013 \u0111\u00e1p theo t\u00e0i li\u1ec7u (Q&amp;A \/ RAG)<\/strong><\/h3>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a LangChain l\u00e0 RAG (Retrieval-Augmented Generation) \u2014 c\u01a1 ch\u1ebf gi\u00fap m\u00f4 h\u00ecnh AI truy xu\u1ea5t th\u00f4ng tin th\u1eadt tr\u01b0\u1edbc khi t\u1ea1o c\u00e2u tr\u1ea3 l\u1eddi. <br>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u1ecfi \u2013 \u0111\u00e1p theo t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt.<\/li>\n\n\n\n<li>Tra c\u1ee9u ch\u00ednh s\u00e1ch n\u1ed9i b\u1ed9 c\u1ee7a doanh nghi\u1ec7p.<\/li>\n\n\n\n<li>H\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng d\u1ef1a tr\u00ean d\u1eef li\u1ec7u s\u1ea3n ph\u1ea9m.<\/li>\n<\/ul>\n\n\n\n<p>LangChain gi\u00fap t\u1ef1 \u0111\u1ed9ng ph\u00e2n t\u00edch, t\u00e1ch, l\u01b0u tr\u1eef v\u00e0 t\u00ecm ki\u1ebfm d\u1eef li\u1ec7u b\u1eb1ng vector, \u0111\u1ea3m b\u1ea3o c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a AI lu\u00f4n b\u00e1m s\u00e1t ngu\u1ed3n th\u00f4ng tin th\u1eadt.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-5.png\" alt=\"\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a LangChain\" class=\"wp-image-120708\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-5.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-5-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a LangChain<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"T\u00f3m_t\u1eaft_v\u00e0_ph\u00e2n_t\u00edch_v\u0103n_b\u1ea3n_t\u1ef1_\u0111\u1ed9ng\"><strong>T\u00f3m t\u1eaft v\u00e0 ph\u00e2n t\u00edch v\u0103n b\u1ea3n t\u1ef1 \u0111\u1ed9ng<\/strong><\/h3>\n\n\n\n<p>V\u1edbi LangChain, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng \u0111\u1ecdc v\u00e0 t\u00f3m t\u1eaft n\u1ed9i dung d\u00e0i nh\u01b0 b\u00e1o c\u00e1o, email, h\u1ee3p \u0111\u1ed3ng hay b\u00e0i vi\u1ebft nghi\u00ean c\u1ee9u. <br>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ed5ng h\u1ee3p n\u1ed9i dung tin t\u1ee9c theo ch\u1ee7 \u0111\u1ec1.<\/li>\n\n\n\n<li>T\u00f3m t\u1eaft bi\u00ean b\u1ea3n cu\u1ed9c h\u1ecdp ho\u1eb7c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt.<\/li>\n\n\n\n<li>Ph\u00e2n t\u00edch \u00fd ki\u1ebfn kh\u00e1ch h\u00e0ng t\u1eeb ph\u1ea3n h\u1ed3i ho\u1eb7c review.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"T\u1ef1_\u0111\u1ed9ng_h\u00f3a_quy_tr\u00ecnh_l\u00e0m_vi\u1ec7c_(Workflow_Automation)\"><strong>T\u1ef1 \u0111\u1ed9ng h\u00f3a quy tr\u00ecnh l\u00e0m vi\u1ec7c (Workflow Automation)<\/strong><\/h3>\n\n\n\n<p>K\u1ebft h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 b\u00ean ngo\u00e0i (API, c\u01a1 s\u1edf d\u1eef li\u1ec7u, h\u1ec7 th\u1ed1ng CRM&#8230;), LangChain c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n x\u00e2y d\u1ef1ng quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng s\u1eed d\u1ee5ng AI l\u00e0m trung t\u00e2m. <br>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Khi c\u00f3 email m\u1edbi \u2192 LangChain ph\u00e2n t\u00edch n\u1ed9i dung \u2192 t\u1ea1o b\u1ea3n tr\u1ea3 l\u1eddi t\u1ef1 \u0111\u1ed9ng \u2192 c\u1eadp nh\u1eadt v\u00e0o h\u1ec7 th\u1ed1ng CRM.<\/li>\n\n\n\n<li>Khi c\u00f3 d\u1eef li\u1ec7u s\u1ea3n ph\u1ea9m m\u1edbi \u2192 LangChain t\u1ef1 \u0111\u1ed9ng sinh m\u00f4 t\u1ea3 SEO v\u00e0 \u0111\u0103ng l\u00ean website.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"C\u00f4ng_c\u1ee5_t\u00ecm_ki\u1ebfm_ng\u1eef_ngh\u0129a_(Semantic_Search)\"><strong>C\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm ng\u1eef ngh\u0129a (Semantic Search)<\/strong><\/h3>\n\n\n\n<p>LangChain h\u1ed7 tr\u1ee3 t\u00ecm ki\u1ebfm b\u1eb1ng ng\u1eef ngh\u0129a thay v\u00ec t\u1eeb kh\u00f3a, ngh\u0129a l\u00e0 AI hi\u1ec3u \u00fd \u0111\u1ecbnh ng\u01b0\u1eddi d\u00f9ng ch\u1ee9 kh\u00f4ng ch\u1ec9 kh\u1edbp ch\u1eef. <br>\u1ee8ng d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u00ecm ki\u1ebfm th\u00f4ng tin trong h\u00e0ng ngh\u00ecn file n\u1ed9i b\u1ed9.<\/li>\n\n\n\n<li>X\u00e2y d\u1ef1ng c\u00f4ng c\u1ee5 tra c\u1ee9u tri th\u1ee9c cho doanh nghi\u1ec7p, tr\u01b0\u1eddng h\u1ecdc, t\u1ed5 ch\u1ee9c nghi\u00ean c\u1ee9u.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-6.png\" alt=\"Tr\u1ee3 l\u00fd l\u1eadp tr\u00ecnh v\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt (Code Assistant)\" class=\"wp-image-120709\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-6.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-6-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Tr\u1ee3 l\u00fd l\u1eadp tr\u00ecnh v\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt (Code Assistant)<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Tr\u1ee3_l\u00fd_l\u1eadp_tr\u00ecnh_v\u00e0_t\u00e0i_li\u1ec7u_k\u1ef9_thu\u1eadt_(Code_Assistant)\"><strong>Tr\u1ee3 l\u00fd l\u1eadp tr\u00ecnh v\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt (Code Assistant)<\/strong><\/h3>\n\n\n\n<p>LangChain c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 x\u00e2y d\u1ef1ng tr\u1ee3 l\u00fd h\u1ed7 tr\u1ee3 l\u1eadp tr\u00ecnh vi\u00ean, gi\u00fap:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gi\u1ea3i th\u00edch code, g\u1ee3i \u00fd h\u00e0m, t\u00f3m t\u1eaft logic.<\/li>\n\n\n\n<li>T\u1ea1o t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt t\u1ef1 \u0111\u1ed9ng.<\/li>\n\n\n\n<li>K\u1ebft h\u1ee3p c\u00f9ng GitHub API \u0111\u1ec3 ph\u00e2n t\u00edch commit ho\u1eb7c pull request.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"N\u1ec1n_t\u1ea3ng_x\u00e2y_d\u1ef1ng_\u1ee9ng_d\u1ee5ng_AI_tu\u1ef3_ch\u1ec9nh_(AI_Application_Framework)\"><strong>N\u1ec1n t\u1ea3ng x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng AI tu\u1ef3 ch\u1ec9nh (AI Application Framework)<\/strong><\/h3>\n\n\n\n<p>LangChain l\u00e0 <strong>b\u1ed9 khung linh ho\u1ea1t<\/strong> cho c\u00e1c startup ho\u1eb7c doanh nghi\u1ec7p mu\u1ed1n ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m AI ri\u00eang \u2014 nh\u01b0 h\u1ec7 th\u1ed1ng g\u1ee3i \u00fd th\u00f4ng minh, ph\u00e2n t\u00edch d\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng, hay tr\u1ee3 l\u00fd doanh nghi\u1ec7p n\u1ed9i b\u1ed9.<\/p>\n\n\n\n<h2 id=\"So_s\u00e1nh_LangChain_v\u1edbi_c\u00e1c_framework_t\u01b0\u01a1ng_t\u1ef1\"><a id=\"post-120703-_2vzo0a26auea\"><\/a>So s\u00e1nh LangChain v\u1edbi c\u00e1c framework t\u01b0\u01a1ng t\u1ef1<\/h2>\n\n\n\n<p>Tino s\u1ebd so s\u00e1nh nhanh LangChain v\u1edbi c\u00e1c framework t\u01b0\u01a1ng t\u1ef1 g\u1ed3m: LlamaIndex, Semantic Kernel (Microsoft) v\u00e0 Haystack (deepset).<\/p>\n\n\n\n<h3 id=\"Tri\u1ebft_l\u00fd_c\u1ed1t_l\u00f5i_v\u00e0_m\u1ee5c_ti\u00eau_ch\u00ednh\"><a id=\"post-120703-_spav2v3ugqn8\"><\/a><strong>Tri\u1ebft l\u00fd c\u1ed1t l\u00f5i v\u00e0 m\u1ee5c ti\u00eau ch\u00ednh<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LangChain:<\/strong> \u0110\u01b0\u1ee3c \u0111\u1ecbnh v\u1ecb l\u00e0 m\u1ed9t framework &#8220;\u0111a n\u0103ng&#8221; (all-in-one). Tri\u1ebft l\u00fd c\u1ee7a LangChain xoay quanh <strong>t\u00ednh tr\u1eebu t\u01b0\u1ee3ng h\u00f3a (abstraction) v\u00e0 kh\u1ea3 n\u0103ng k\u1ebft h\u1ee3p (composability)<\/strong>. Framework n\u00e0y cung c\u1ea5p m\u1ed9t b\u1ed9 c\u00f4ng c\u1ee5 to\u00e0n di\u1ec7n \u0111\u1ec3 l\u1eadp tr\u00ecnh vi\u00ean &#8220;l\u1eafp gh\u00e9p&#8221; c\u00e1c th\u00e0nh ph\u1ea7n (LLM, c\u00f4ng c\u1ee5, ngu\u1ed3n d\u1eef li\u1ec7u) nh\u1eb1m x\u00e2y d\u1ef1ng b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o, t\u1eeb RAG \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn c\u00e1c T\u00e1c t\u1eed (Agent) t\u1ef1 ch\u1ee7 ph\u1ee9c t\u1ea1p.<\/li>\n\n\n\n<li><strong>LlamaIndex:<\/strong> L\u00e0 m\u1ed9t framework &#8220;chuy\u00ean gia v\u1ec1 d\u1eef li\u1ec7u&#8221;. Tri\u1ebft l\u00fd c\u1ee7a LlamaIndex ho\u00e0n to\u00e0n t\u1eadp trung v\u00e0o <strong>RAG (Retrieval-Augmented Generation)<\/strong>. Framework n\u00e0y kh\u00f4ng c\u1ed1 g\u1eafng l\u00e0m m\u1ecdi th\u1ee9, m\u00e0 thay v\u00e0o \u0111\u00f3, t\u1ed1i \u01b0u h\u00f3a s\u00e2u cho m\u1ed9t nhi\u1ec7m v\u1ee5 duy nh\u1ea5t: tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p t\u1ed1t nh\u1ea5t cho vi\u1ec7c <em>n\u1ea1p (ingest), l\u1eadp ch\u1ec9 m\u1ee5c (index) v\u00e0 truy xu\u1ea5t (retrieve)<\/em> d\u1eef li\u1ec7u \u0111\u1ec3 cung c\u1ea5p ng\u1eef c\u1ea3nh cho LLM.<\/li>\n\n\n\n<li><strong>Semantic Kernel (Microsoft):<\/strong> L\u00e0 m\u1ed9t &#8220;SDK c\u1ea5p doanh nghi\u1ec7p&#8221;. Tri\u1ebft l\u00fd c\u1ee7a Semantic Kernel nh\u1ea5n m\u1ea1nh \u0111\u1ebfn <strong>s\u1ef1 \u1ed5n \u0111\u1ecbnh, b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p doanh nghi\u1ec7p<\/strong>. Gi\u1ea3i ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u01b0 m\u1ed9t &#8220;b\u1ed9 \u0111i\u1ec1u ph\u1ed1i&#8221; (orchestrator) g\u1ecdn nh\u1eb9, cho ph\u00e9p t\u00edch h\u1ee3p c\u00e1c &#8220;k\u1ef9 n\u0103ng&#8221; (skills) AI v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng .NET, Java ho\u1eb7c Python hi\u1ec7n h\u1eefu m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 c\u00f3 c\u1ea5u tr\u00fac.<\/li>\n\n\n\n<li><strong>Haystack (deepset):<\/strong> L\u00e0 m\u1ed9t &#8220;h\u1ec7 th\u1ed1ng t\u00ecm ki\u1ebfm cho production&#8221;. Tri\u1ebft l\u00fd c\u1ee7a Haystack xu\u1ea5t ph\u00e1t t\u1eeb <strong>MLOps v\u00e0 T\u00ecm ki\u1ebfm (Search)<\/strong>. Framework n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c &#8220;pipeline&#8221; (lu\u1ed3ng x\u1eed l\u00fd) t\u00ecm ki\u1ebfm ng\u1eef ngh\u0129a v\u00e0 RAG m\u1ea1nh m\u1ebd, <em>s\u1eb5n s\u00e0ng cho m\u00f4i tr\u01b0\u1eddng production<\/em>, c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng (scalable) v\u00e0 gi\u00e1m s\u00e1t (monitorable).<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-7.png\" alt=\"So s\u00e1nh LangChain v\u1edbi c\u00e1c framework t\u01b0\u01a1ng t\u1ef1\" class=\"wp-image-120710\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-7.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/LangChain-la-gi-7-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>So s\u00e1nh LangChain v\u1edbi c\u00e1c framework t\u01b0\u01a1ng t\u1ef1<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Tr\u01b0\u1eddng_h\u1ee3p_s\u1eed_d\u1ee5ng_hi\u1ec7u_qu\u1ea3_nh\u1ea5t\"><a id=\"post-120703-_g448f6gxzbkv\"><\/a><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LangChain:<\/strong> Hi\u1ec7u qu\u1ea3 nh\u1ea5t khi x\u00e2y d\u1ef1ng <strong>T\u00e1c t\u1eed t\u1ef1 ch\u1ee7 (Autonomous Agents)<\/strong>. \u0110\u00e2y l\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, n\u01a1i LLM \u0111\u01b0\u1ee3c trao quy\u1ec1n t\u1ef1 suy lu\u1eadn, l\u1eadp k\u1ebf ho\u1ea1ch v\u00e0 quy\u1ebft \u0111\u1ecbnh s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 n\u00e0o \u0111\u1ec3 ho\u00e0n th\u00e0nh m\u1ed9t m\u1ee5c ti\u00eau.<\/li>\n\n\n\n<li><strong>LlamaIndex:<\/strong> Hi\u1ec7u qu\u1ea3 nh\u1ea5t cho <strong>RAG n\u00e2ng cao<\/strong>. B\u1ea5t c\u1ee9 khi n\u00e0o \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u &#8220;tr\u00f2 chuy\u1ec7n v\u1edbi d\u1eef li\u1ec7u&#8221; (d\u00f9 l\u00e0 PDF, SQL hay API), LlamaIndex s\u1ebd cung c\u1ea5p c\u00e1c k\u1ef9 thu\u1eadt truy xu\u1ea5t v\u00e0 l\u1eadp ch\u1ec9 m\u1ee5c ti\u00ean ti\u1ebfn (v\u00ed d\u1ee5: graph RAG, query transformations) m\u00e0 c\u00e1c framework kh\u00e1c kh\u00f4ng chuy\u00ean s\u00e2u b\u1eb1ng.<\/li>\n\n\n\n<li><strong>Semantic Kernel:<\/strong> Hi\u1ec7u qu\u1ea3 nh\u1ea5t khi c\u1ea7n <strong>t\u00edch h\u1ee3p v\u00e0o \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p<\/strong>. Khi c\u1ea7n b\u1ed5 sung ch\u1ee9c n\u0103ng AI (v\u00ed d\u1ee5: &#8220;t\u00f3m t\u1eaft email n\u00e0y&#8221;) v\u00e0o m\u1ed9t \u1ee9ng d\u1ee5ng .NET ho\u1eb7c Java quy m\u00f4 l\u1edbn, Semantic Kernel l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho m\u1ee5c \u0111\u00edch n\u00e0y.<\/li>\n\n\n\n<li><strong>Haystack:<\/strong> Hi\u1ec7u qu\u1ea3 nh\u1ea5t cho <strong>h\u1ec7 th\u1ed1ng t\u00ecm ki\u1ebfm ng\u1eef ngh\u0129a quy m\u00f4 l\u1edbn<\/strong>. Khi doanh nghi\u1ec7p c\u1ea7n x\u00e2y d\u1ef1ng m\u1ed9t &#8220;Google n\u1ed9i b\u1ed9&#8221; cho h\u00e0ng tri\u1ec7u t\u00e0i li\u1ec7u, \u0111\u00f2i h\u1ecfi s\u1ef1 \u1ed5n \u0111\u1ecbnh, t\u1ed1c \u0111\u1ed9 v\u00e0 kh\u1ea3S n\u0103ng v\u1eadn h\u00e0nh (MLOps).<\/li>\n<\/ul>\n\n\n\n<h3 id=\"H\u1ec7_sinh_th\u00e1i_v\u00e0_kh\u1ea3_n\u0103ng_t\u00edch_h\u1ee3p\"><a id=\"post-120703-_3z1f2iksczmn\"><\/a><strong>H\u1ec7 sinh th\u00e1i v\u00e0 kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LangChain:<\/strong> <strong>R\u1ed9ng nh\u1ea5t<\/strong>. S\u1edf h\u1eefu h\u1ec7 sinh th\u00e1i l\u1edbn nh\u1ea5t v\u1edbi h\u00e0ng tr\u0103m t\u00edch h\u1ee3p cho m\u1ecdi th\u00e0nh ph\u1ea7n: t\u1eeb c\u00e1c LLM kh\u00e1c nhau, c\u01a1 s\u1edf d\u1eef li\u1ec7u vector, cho \u0111\u1ebfn c\u00e1c API v\u00e0 tr\u00ecnh t\u1ea3i d\u1eef li\u1ec7u.<\/li>\n\n\n\n<li><strong>LlamaIndex:<\/strong> <strong>S\u00e2u nh\u1ea5t v\u1ec1 d\u1eef li\u1ec7u<\/strong>. H\u1ec7 sinh th\u00e1i t\u1eadp trung chuy\u00ean s\u00e2u v\u00e0o c\u00e1c tr\u00ecnh k\u1ebft n\u1ed1i d\u1eef li\u1ec7u (data connectors) v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u vector. Framework n\u00e0y c\u00f3 c\u00e1c tr\u00ecnh ph\u00e2n t\u00edch (parser) chuy\u00ean d\u1ee5ng cho c\u00e1c lo\u1ea1i t\u1ec7p ph\u1ee9c t\u1ea1p (nh\u01b0 PDF c\u00f3 b\u1ea3ng bi\u1ec3u) r\u1ea5t hi\u1ec7u qu\u1ea3.<\/li>\n\n\n\n<li><strong>Semantic Kernel:<\/strong> <strong>T\u1eadp trung<\/strong>. H\u1ec7 sinh th\u00e1i t\u1eadp trung m\u1ea1nh v\u00e0o c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a Microsoft (Azure, Microsoft 365). S\u1ed1 l\u01b0\u1ee3ng t\u00edch h\u1ee3p kh\u00f4ng nhi\u1ec1u b\u1eb1ng LangChain, nh\u01b0ng c\u00e1c t\u00edch h\u1ee3p hi\u1ec7n c\u00f3 r\u1ea5t ch\u1eb7t ch\u1ebd v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/li>\n\n\n\n<li><strong>Haystack:<\/strong> <strong>T\u1eadp trung v\u00e0o Production<\/strong>. H\u1ec7 sinh th\u00e1i t\u1eadp trung v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7n thi\u1ebft cho m\u00f4i tr\u01b0\u1eddng production nh\u01b0 Elasticsearch, OpenSearch v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t hi\u1ec7u su\u1ea5t AI.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"Ng\u00f4n_ng\u1eef_l\u1eadp_tr\u00ecnh_h\u1ed7_tr\u1ee3\"><a id=\"post-120703-_5s8wtoe7baq3\"><\/a><strong>Ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh h\u1ed7 tr\u1ee3<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LangChain:<\/strong> <strong>Python<\/strong> v\u00e0 <strong>JavaScript<\/strong> (TypeScript). C\u1ea3 hai phi\u00ean b\u1ea3n \u0111\u1ec1u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n song song v\u00e0 m\u1ea1nh m\u1ebd.<\/li>\n\n\n\n<li><strong>LlamaIndex:<\/strong> <strong>Python<\/strong> v\u00e0 <strong>JavaScript<\/strong> (TypeScript). Phi\u00ean b\u1ea3n Python l\u00e0 ch\u1ee7 \u0111\u1ea1o v\u00e0 \u0111\u1ea7y \u0111\u1ee7 t\u00ednh n\u0103ng nh\u1ea5t.<\/li>\n\n\n\n<li><strong>Semantic Kernel:<\/strong> <strong>C#<\/strong>, <strong>Python<\/strong>, v\u00e0 <strong>Java<\/strong>. Vi\u1ec7c h\u1ed7 tr\u1ee3 C# v\u00e0 Java l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t l\u1edbn nh\u1ea5t, nh\u1eafm th\u1eb3ng v\u00e0o c\u00e1c doanh nghi\u1ec7p.<\/li>\n\n\n\n<li><strong>Haystack:<\/strong> <strong>Ch\u1ec9 h\u1ed7 tr\u1ee3 Python<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"\u0110\u1ed1i_t\u01b0\u1ee3ng_ng\u01b0\u1eddi_d\u00f9ng_m\u1ee5c_ti\u00eau\"><a id=\"post-120703-_uj9p33uye5lt\"><\/a><strong>\u0110\u1ed1i t\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng m\u1ee5c ti\u00eau<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LangChain:<\/strong> L\u1eadp tr\u00ecnh vi\u00ean, nh\u00e0 nghi\u00ean c\u1ee9u, v\u00e0 c\u00e1c startup (nh\u1eefng ng\u01b0\u1eddi c\u1ea7n th\u1eed nghi\u1ec7m \u00fd t\u01b0\u1edfng nhanh v\u00e0 linh ho\u1ea1t t\u1ed1i \u0111a).<\/li>\n\n\n\n<li><strong>LlamaIndex:<\/strong> K\u1ef9 s\u01b0 AI, K\u1ef9 s\u01b0 d\u1eef li\u1ec7u (nh\u1eefng ng\u01b0\u1eddi t\u1eadp trung chuy\u00ean s\u00e2u v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng RAG).<\/li>\n\n\n\n<li><strong>Semantic Kernel:<\/strong> L\u1eadp tr\u00ecnh vi\u00ean doanh nghi\u1ec7p (Enterprise Developers), \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c s\u1eed d\u1ee5ng .NET ho\u1eb7c Java.<\/li>\n\n\n\n<li><strong>Haystack:<\/strong> K\u1ef9 s\u01b0 v\u1eadn h\u00e0nh AI\/ML (MLOps Engineers), K\u1ef9 s\u01b0 d\u1eef li\u1ec7u (nh\u1eefng ng\u01b0\u1eddi c\u1ea7n x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng production \u1ed5n \u0111\u1ecbnh, quy m\u00f4 l\u1edbn).<\/li>\n<\/ul>\n\n\n\n<h3 id=\"K\u1ebft_lu\u1eadn\"><a id=\"post-120703-_nxp3wz2ytj5b\"><\/a><strong>K\u1ebft lu\u1eadn<\/strong><\/h3>\n\n\n\n<p>T\u1eeb vi\u1ec7c x\u00e2y d\u1ef1ng m\u1ed9t chatbot \u0111\u01a1n gi\u1ea3n cho website, \u0111\u1ebfn c\u00e1c &#8220;t\u00e1c t\u1eed AI&#8221; t\u1ef1 ch\u1ee7 c\u00f3 th\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch v\u00e0 th\u1ef1c thi c\u00e1c t\u00e1c v\u1ee5 ph\u1ee9c t\u1ea1p, LangChain \u0111\u1ec1u \u0111ang m\u1edf ra nh\u1eefng c\u00e1nh c\u1eeda m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y ch\u00fang ta cho l\u00e0 b\u1ea5t kh\u1ea3 thi. T\u01b0\u01a1ng lai c\u1ee7a ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng kh\u00f4ng c\u00f2n ch\u1ec9 l\u00e0 vi\u1ebft code, m\u00e0 l\u00e0 &#8220;k\u1ebft n\u1ed1i&#8221; c\u00e1c m\u00f4 h\u00ecnh th\u00f4ng minh. V\u00e0 LangChain ch\u00ednh l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng nh\u1ea5t b\u1ea1n c\u1ea7n trang b\u1ecb trong b\u1ed9 k\u1ef9 n\u0103ng AI c\u1ee7a m\u00ecnh ngay h\u00f4m nay.<\/p>\n\n\n\n<p>B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng AI \u0111\u1ea7u ti\u00ean c\u1ee7a m\u00ecnh v\u1edbi LangChain ch\u01b0a?<\/p>\n\n\n\n<h2 id=\"Nh\u1eefng_c\u00e2u_h\u1ecfi_th\u01b0\u1eddng_g\u1eb7p\"><a id=\"post-120703-_jgoh3kvkarok\"><\/a>Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"LangChain_c\u00f3_ph\u1ea3i_l\u00e0_m\u1ed9t_LLM_kh\u00f4ng?\">LangChain c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t LLM kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>Kh\u00f4ng. LangChain <em>kh\u00f4ng ph\u1ea3i<\/em> l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef. \u0110\u00e2y l\u00e0 m\u1ed9t <em>c\u00f4ng c\u1ee5<\/em> \u0111\u1ec3 &#8220;\u0111i\u1ec1u ph\u1ed1i&#8221; (orchestrate) v\u00e0 x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng <em>b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng<\/em> c\u00e1c LLM nh\u01b0 GPT (c\u1ee7a OpenAI) ho\u1eb7c Gemini (c\u1ee7a Google).<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"LangChain_c\u00f3_mi\u1ec5n_ph\u00ed_kh\u00f4ng?_\">LangChain c\u00f3 mi\u1ec5n ph\u00ed kh\u00f4ng? <\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>LangChain l\u00e0 m\u1ed9t framework m\u00e3 ngu\u1ed3n m\u1edf (th\u01b0 vi\u1ec7n langchain cho Python\/JS) n\u00ean ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed. Tuy nhi\u00ean, b\u1ea1n s\u1ebd ph\u1ea3i tr\u1ea3 ti\u1ec1n cho c\u00e1c d\u1ecbch v\u1ee5 m\u00e0 ramework g\u1ecdi \u0111\u1ebfn, ch\u1eb3ng h\u1ea1n nh\u01b0 chi ph\u00ed API c\u1ee7a OpenAI (khi g\u1ecdi model GPT) ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 c\u01a1 s\u1edf d\u1eef li\u1ec7u vector.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"T\u1ea1i_sao_t\u00f4i_c\u1ea7n_LangChain?_Kh\u00f4ng_th\u1ec3_d\u00f9ng_tr\u1ef1c_ti\u1ebfp_API_c\u1ee7a_OpenAI_sao?\">T\u1ea1i sao t\u00f4i c\u1ea7n LangChain? Kh\u00f4ng th\u1ec3 d\u00f9ng tr\u1ef1c ti\u1ebfp API c\u1ee7a OpenAI sao?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng tr\u1ef1c ti\u1ebfp API, nh\u01b0ng ch\u1ec9 cho c\u00e1c t\u00e1c v\u1ee5 \u0111\u01a1n gi\u1ea3n (nh\u01b0 h\u1ecfi-\u0111\u00e1p 1 l\u1ea7n). LangChain gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n ph\u1ee9c t\u1ea1p h\u01a1n: l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 LLM &#8220;\u0111\u1ecdc&#8221; \u0111\u01b0\u1ee3c file v\u00e0i tr\u0103m trang c\u1ee7a b\u1ea1n? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 LLM duy\u1ec7t web? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 chatbot &#8220;nh\u1edb&#8221; \u0111\u01b0\u1ee3c cu\u1ed9c h\u1ed9i tho\u1ea1i?<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"RAG_l\u00e0_g\u00ec_v\u00e0_li\u00ean_quan_g\u00ec_\u0111\u1ebfn_LangChain?_\">RAG l\u00e0 g\u00ec v\u00e0 li\u00ean quan g\u00ec \u0111\u1ebfn LangChain? <\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>RAG (Retrieval-Augmented Generation) l\u00e0 k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng LangChain. \u0110\u00e2y l\u00e0 quy tr\u00ecnh cho ph\u00e9p LLM tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ee7a ri\u00eang b\u1ea1n (v\u00ed d\u1ee5: t\u00e0i li\u1ec7u n\u1ed9i b\u1ed9). LangChain cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1ec3 &#8220;truy xu\u1ea5t&#8221; th\u00f4ng tin li\u00ean quan t\u1eeb t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n v\u00e0 &#8220;b\u1ed5 sung&#8221; th\u00f4ng tin \u0111\u00f3 v\u00e0o prompt tr\u01b0\u1edbc khi &#8220;t\u1ea1o&#8221; c\u00e2u tr\u1ea3 l\u1eddi.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"LangSmith_l\u00e0_g\u00ec?_C\u00f3_ph\u1ea3i_l\u00e0_LangChain_kh\u00f4ng?\">LangSmith l\u00e0 g\u00ec? C\u00f3 ph\u1ea3i l\u00e0 LangChain kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>LangSmith l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i (tr\u1ea3 ph\u00ed) c\u1ee7a c\u00f4ng ty \u0111\u1ee9ng sau LangChain. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 framework, m\u00e0 l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng \u0111\u1ec3 gi\u00e1m s\u00e1t, g\u1ee1 l\u1ed7i (debug) v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c \u1ee9ng d\u1ee5ng LangChain c\u1ee7a b\u1ea1n khi \u0111\u01b0a v\u00e0o v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf (production).<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"LangChain c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t LLM kh\u00f4ng?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Kh\u00f4ng. LangChain <em>kh\u00f4ng ph\u1ea3i<\/em> l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef. \u0110\u00e2y l\u00e0 m\u1ed9t <em>c\u00f4ng c\u1ee5<\/em> \u0111\u1ec3 \\\"\u0111i\u1ec1u ph\u1ed1i\\\" (orchestrate) v\u00e0 x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng <em>b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng<\/em> c\u00e1c LLM nh\u01b0 GPT (c\u1ee7a OpenAI) ho\u1eb7c Gemini (c\u1ee7a Google).<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"LangChain c\u00f3 mi\u1ec5n ph\u00ed kh\u00f4ng? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>LangChain l\u00e0 m\u1ed9t framework m\u00e3 ngu\u1ed3n m\u1edf (th\u01b0 vi\u1ec7n langchain cho Python\/JS) n\u00ean ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed. Tuy nhi\u00ean, b\u1ea1n s\u1ebd ph\u1ea3i tr\u1ea3 ti\u1ec1n cho c\u00e1c d\u1ecbch v\u1ee5 m\u00e0 ramework g\u1ecdi \u0111\u1ebfn, ch\u1eb3ng h\u1ea1n nh\u01b0 chi ph\u00ed API c\u1ee7a OpenAI (khi g\u1ecdi model GPT) ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 c\u01a1 s\u1edf d\u1eef li\u1ec7u vector.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"T\u1ea1i sao t\u00f4i c\u1ea7n LangChain? Kh\u00f4ng th\u1ec3 d\u00f9ng tr\u1ef1c ti\u1ebfp API c\u1ee7a OpenAI sao?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng tr\u1ef1c ti\u1ebfp API, nh\u01b0ng ch\u1ec9 cho c\u00e1c t\u00e1c v\u1ee5 \u0111\u01a1n gi\u1ea3n (nh\u01b0 h\u1ecfi-\u0111\u00e1p 1 l\u1ea7n). LangChain gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n ph\u1ee9c t\u1ea1p h\u01a1n: l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 LLM \\\"\u0111\u1ecdc\\\" \u0111\u01b0\u1ee3c file v\u00e0i tr\u0103m trang c\u1ee7a b\u1ea1n? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 LLM duy\u1ec7t web? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 chatbot \\\"nh\u1edb\\\" \u0111\u01b0\u1ee3c cu\u1ed9c h\u1ed9i tho\u1ea1i?<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"RAG l\u00e0 g\u00ec v\u00e0 li\u00ean quan g\u00ec \u0111\u1ebfn LangChain? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>RAG (Retrieval-Augmented Generation) l\u00e0 k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng LangChain. \u0110\u00e2y l\u00e0 quy tr\u00ecnh cho ph\u00e9p LLM tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ee7a ri\u00eang b\u1ea1n (v\u00ed d\u1ee5: t\u00e0i li\u1ec7u n\u1ed9i b\u1ed9). LangChain cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1ec3 \\\"truy xu\u1ea5t\\\" th\u00f4ng tin li\u00ean quan t\u1eeb t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n v\u00e0 \\\"b\u1ed5 sung\\\" th\u00f4ng tin \u0111\u00f3 v\u00e0o prompt tr\u01b0\u1edbc khi \\\"t\u1ea1o\\\" c\u00e2u tr\u1ea3 l\u1eddi.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"LangSmith l\u00e0 g\u00ec? C\u00f3 ph\u1ea3i l\u00e0 LangChain kh\u00f4ng?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>LangSmith l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i (tr\u1ea3 ph\u00ed) c\u1ee7a c\u00f4ng ty \u0111\u1ee9ng sau LangChain. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 framework, m\u00e0 l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng \u0111\u1ec3 gi\u00e1m s\u00e1t, g\u1ee1 l\u1ed7i (debug) v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c \u1ee9ng d\u1ee5ng LangChain c\u1ee7a b\u1ea1n khi \u0111\u01b0a v\u00e0o v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf (production).<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t\t\t]\n\t}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c m\u00f4 h\u00ecnh ng\u00f4n ng\u1eef l\u1edbn (LLM) tuy c\u1ef1c k\u1ef3 th\u00f4ng minh, nh\u01b0ng ch\u00fang v\u1ed1n b\u1ecb &#8220;nh\u1ed1t&#8221; trong m\u1ed9t th\u1ebf gi\u1edbi d\u1eef li\u1ec7u gi\u1edbi h\u1ea1n v\u00e0 kh\u00f4ng th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi b\u00ean ngo\u00e0i. Ch\u00fang kh\u00f4ng th\u1ec3 duy\u1ec7t web, kh\u00f4ng th\u1ec3 truy c\u1eadp file c\u1ee7a b\u1ea1n v\u00e0 c\u0169ng kh\u00f4ng th\u1ec3 g\u1ecdi c\u00e1c API. LangChain ch\u00ednh l\u00e0 [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":120711,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5404],"tags":[7451],"class_list":["post-120703","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-webmasters","tag-langchain"],"_links":{"self":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/120703","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/comments?post=120703"}],"version-history":[{"count":3,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/120703\/revisions"}],"predecessor-version":[{"id":120811,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/120703\/revisions\/120811"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media\/120711"}],"wp:attachment":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media?parent=120703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/categories?post=120703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/tags?post=120703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}