- [ Home ](/) / - [ Examples ](/examples/) / - LangChain Docs # LangChain Docs: what its llms.txt contains Measured on 2026-08-03: 97.6 KB, 1 sections, 957 links. How that compares with the other 112 files we track, and what it implies. Last updated: August 3, 2026 ## The file **LangChain Docs** publishes an llms.txt at [`https://docs.langchain.com/llms.txt`](https://docs.langchain.com/llms.txt). The file declares itself as **Docs by LangChain** in its H1, and the host is categorised here as ai & ml. It was last fetched and parsed on 2026-08-03. ## Measured structure Measure LangChain Docs Corpus median Percentile Size 97.6 KB 14.0 KB 88th H2 sections 1 7 9th Links 957 76 93th Blockquote summary Present 90 of 113 have one n/a Percentiles are against the 113 files in this directory, not against the web. That population is deliberately weighted toward documentation platforms and developer tools, which is where the convention started, so treat it as a peer group rather than a norm. ## Observations - 957 links is closer to a sitemap than to a curated index. The convention exists so a model can skip crawling everything; a list this long hands the selection problem straight back to it. ℹ What this page does not tell you These are structural measurements of a text file. They say nothing about whether the pages it links to are good, whether anything actually reads it, or whether publishing it helped this site. On that last question the measured answer is sobering, and we cover it in no AI agent goes looking for your llms.txt . ## Comparable files Closest in size within ai & ml, from the same weekly check: - [W&B Docs](/llms-txt-directory/docs-wandb-ai/): 98.1 KB, 2 sections, 896 links , no blockquote summary - [Pinecone Docs](/llms-txt-directory/docs-pinecone-io/): 75.7 KB, 2 sections, 419 links - [Groq Console](/llms-txt-directory/console-groq-com/): 61.8 KB, 0 sections, 150 links , no blockquote summary - [Anthropic Docs](/llms-txt-directory/docs-anthropic-com/): 55.6 KB, 3 sections, 549 links , no blockquote summary ## How this was measured Our checker fetches `/llms.txt` for every host in the directory, follows redirects, confirms the response is Markdown rather than an HTML error page, and parses it with the same parser that powers our [validator](/validator/). Sizes are of the served body, sections are H2 headings, and links are Markdown links anywhere in the file. The run behind this page completed on 2026-08-03. Want to check a file yourself, including this one? Paste the URL into the [validator](/validator/). To see how to find any site's file, see [how to find a website's llms.txt](/how-to-find-llms-txt/), and for the full list see the [directory of 113 verified files](/examples/). ## Sources - [ LangChain Docs llms.txt (live file) ](https://docs.langchain.com/llms.txt) - [ llmstxt.org, the specification ](https://llmstxt.org/) On this page - [ The file ](#file) - [ Measured structure ](#structure) - [ Observations ](#observations) - [ Comparable files ](#compare) - [ How this was measured ](#method)