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long-term memory, and time-travel. Deploy with fault-tolerant scalability.</p></div><a href="/langgraph" class="button is-link w-inline-block"><div class="link_icon w-embed"><svg width="15" height="14" viewBox="0 0 15 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M14.0788 1.96304L2.33407 13.7077L0.919861 12.2935L12.6645 0.548828L14.0788 1.96304Z" fill="CurrentColor"/> <path fill-rule="evenodd" clip-rule="evenodd" d="M12.5 2H1.5V0H14.5V13H12.5V2Z" fill="CurrentColor"/> </svg></div><div>Learn more about LangGraph Platform</div></a></div><div class="home_build-video-wrapper"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/667c6d7284e58f4743a430e6_Langgraph%20UI-home-2.webp" loading="lazy" sizes="(max-width: 1768px) 100vw, 1768px" srcset="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/667c6d7284e58f4743a430e6_Langgraph%20UI-home-2-p-500.webp 500w, 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55.7522 12.6613 55.6896 12.5989L53.2946 10.1848C52.9796 9.867 52.962 9.35415 53.2516 9.01485L53.9794 8.1666C54.271 7.8273 54.7836 7.7649 55.1456 8.0262L59.2469 10.9688C59.5365 11.1774 59.7928 11.427 60.01 11.7117L63.3618 16.1109C63.5125 16.3098 63.5086 16.5828 63.3501 16.7758L63.352 16.7817Z" fill="currentColor"/> </svg></div><h2 class="heading-style-h2">Manage agent observability & performance with LangSmith</h2><p class="text-size-medium">Get visibility into your LLM calls and agent reasoning with LangSmith to quickly debug failures. Run evals to assess your agent performance over production traffic — so you can ensure high-quality responses. </p></div><a href="/langsmith" class="button is-link w-inline-block"><div>Learn more about LangSmith</div><div class="link_icon w-embed"><svg width="15" height="14" viewBox="0 0 15 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M14.0788 1.96304L2.33407 13.7077L0.919861 12.2935L12.6645 0.548828L14.0788 1.96304Z" fill="CurrentColor"/> <path fill-rule="evenodd" clip-rule="evenodd" d="M12.5 2H1.5V0H14.5V13H12.5V2Z" fill="CurrentColor"/> </svg></div></a></div></div></div></div></div></section><div class="section_home-slider"><section class="section_slider"><div class="padding-global"><div class="container-large"><div class="happy-customers_heading"><div id="w-node-de1f17ca-398b-87cf-f1fe-c1d40a2aa0f2-0a2aa0e8" class="happy-customers_text-part"><h3 class="heading-style-h2">Hear from our happy customers</h3><p class="max-width-medium">LangChain, LangGraph, and LangSmith help teams of all sizes, across all industries - from ambitious startups to established enterprises.</p></div></div><div class="happy-customers_slider-box"><div class="swiper is-customers"><div class="swiper-wrapper is-customers is-langgraph"><div class="swiper-slide is-customers"><div class="happy-customers_slide-text-part"><div class="happy-customers_logotype-box"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/65c5308a04d37cf7d3eb1341_Rakuten_Global_Brand_Logo.png" loading="lazy" alt="" class="happy-customers_logotype-img"/></div><p class="text-size-regular is-opacity-80">“By combining the benefits of LangSmith and standing on the shoulders of a gigantic open-source community, we’re able to identify the right approaches of using LLMs in an enterprise-setting faster.”</p></div><div class="happy-customers_slide-author-part"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/65c5308a8b6137d44c621cb4_Yusuke%20Kaji.png" loading="lazy" alt="" class="happy-customers_slide-author-img"/><div class="happy-customers_slide-author-text"><div class="heading-style-h6">Yusuke Kaji</div><div class="text-size-regular is-opacity-80">General Manager of AI</div></div></div></div><div class="swiper-slide is-customers"><div class="happy-customers_slide-text-part"><div class="happy-customers_logotype-box is-no-padding"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/65c5308aea1371b447cc4af9_elastic-ar21.png" loading="lazy" alt="" class="happy-customers_logotype-img is--bigger"/></div><p class="text-size-regular is-opacity-80">“Working with LangChain and LangSmith on the Elastic AI Assistant had a significant positive impact on the overall pace and quality of the development and shipping experience. We couldn’t have achieved the product experience delivered to our customers without LangChain, and we couldn’t have done it at the same pace without LangSmith.”</p></div><div class="happy-customers_slide-author-part"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/65c5308a4095d5a871de7479_James%20Spiteri.png" loading="lazy" alt="" class="happy-customers_slide-author-img"/><div class="happy-customers_slide-author-text"><div class="heading-style-h6">James Spiteri</div><div class="text-size-regular is-opacity-80">Director of Security Products</div></div></div></div><div class="swiper-slide is-customers"><div class="happy-customers_slide-text-part"><div class="happy-customers_logotype-box"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/65c530539f4824b828357352_Logo_de_Fintual%201.png" loading="lazy" width="88" alt="" class="happy-customers_logotype-img"/></div><p class="text-size-regular is-opacity-80">“As soon as we heard about LangSmith, we moved our entire development stack onto it. 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margin-xsmall">The reference architecture enterprises adopt for success.</h2><p class="text-size-medium max-width-small">LangChain’s suite of products can be used independently or stacked together for multiplicative impact – guiding you through building, running, and managing your LLM apps.</p></div><div class="architecture-image_wrapper"><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/6723aa76cc7a8e249bd43edf_LIGHT%20BACKGROUND%20-%2031.10.2024%20-%20stack%20diagram.webp" loading="lazy" height="Auto" alt="" width="71" class="fullwidth-image is-desktop homepage"/><img src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/667d392696fc0bc3e17a6d04_New%20LC%20stack%20-%20light-2.webp" loading="lazy" width="623" sizes="(max-width: 479px) 100vw, 623px" alt="" srcset="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/667d392696fc0bc3e17a6d04_New%20LC%20stack%20-%20light-2-p-500.webp 500w, 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Stars</div></div><div class="community_bubble is-right"><div class="heading-style-decorative-2 is-numeric">4K+</div><div class="heading-style-h6">Contributors</div></div></div></div><div class="product_text-wrapper"><div class="product_text-content"><h2 class="heading-style-h2">The biggest developer community in GenAI</h2><p class="text-size-medium">Learn alongside the 1M+ developers who are pushing the industry forward.</p></div><a href="/langchain" class="button is-link w-inline-block"><div>Explore LangChain</div><div class="link_icon w-embed"><svg width="15" height="14" viewBox="0 0 15 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M14.0788 1.96304L2.33407 13.7077L0.919861 12.2935L12.6645 0.548828L14.0788 1.96304Z" fill="CurrentColor"/> <path fill-rule="evenodd" clip-rule="evenodd" d="M12.5 2H1.5V0H14.5V13H12.5V2Z" fill="CurrentColor"/> </svg></div></a></div></div></div></div></section><section class="section_home-cta"><div 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class="link_icon w-embed"><svg width="15" height="14" viewBox="0 0 15 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M14.0788 1.96304L2.33407 13.7077L0.919861 12.2935L12.6645 0.548828L14.0788 1.96304Z" fill="CurrentColor"/> <path fill-rule="evenodd" clip-rule="evenodd" d="M12.5 2H1.5V0H14.5V13H12.5V2Z" fill="CurrentColor"/> </svg></div></a></div><div class="layout_content-right"><h2>Get inspired by companies who have done it.</h2></div></div><div class="use-case_list-wrapper"><div class="w-layout-grid use-case_list"><a data-w-id="f49f52e7-0f65-8bf9-79c6-b74cb4e015a8" style="opacity:0" href="https://blog.langchain.dev/ally-financial-collaborates-with-langchain-to-deliver-critical-coding-module-to-mask-personal-identifying-information-in-a-compliant-and-safe-manner/" target="_blank" class="use-case_item is-alternate w-inline-block"><div class="use-case_image-link"><div class="use-case_image-wrapper"><div class="use-case_image is-alternate"><img alt="" loading="lazy" width="88.5" src="https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/65bcd7ee85507bdf350399c3_Ally_Financial%201.svg"/></div></div></div><div class="use-case_link-wrap"><div class="use-case_pill">Financial Services</div><div><div class="icon-embed-medium is-use-case w-embed"><svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 42 42" fill="none" preserveAspectRatio="xMidYMid meet" aria-hidden="true" role="img"> <path d="M1.42187 41.0005L40.5708 1.85156" stroke="currentColor" stroke-width="2"/> <path d="M1 0.999512L41 0.999512V40.9995" stroke="currentColor" stroke-width="2"/> </svg></div></div></div></a><a data-w-id="0b88affc-7742-f857-71d8-373596026874" style="opacity:0" href="https://blog.langchain.dev/llms-accelerate-adyens-support-team-through-smart-ticket-routing-and-support-agent-copilot/" target="_blank" class="use-case_item is-alternate w-inline-block"><div class="use-case_image-link"><div 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