llmtxt.info blog https://llmtxt.info/blog/ Guides on the llms.txt spec, AI crawlers and generative engine optimization (GEO). en State of llms.txt adoption, June 2026: measured data https://llmtxt.info/blog/state-of-llms-txt-2026/ https://llmtxt.info/blog/state-of-llms-txt-2026/ Weekly measured adoption of llms.txt over a fixed panel of 219 notable hosts, with public raw data and open-source checker. Wed, 10 Jun 2026 00:00:00 GMT llms.txt best practices in 2026: a practical guide https://llmtxt.info/blog/llms-txt-best-practices-2025/ https://llmtxt.info/blog/llms-txt-best-practices-2025/ A practical do and don't guide for writing an llms.txt file AI systems actually use. Wed, 10 Jun 2026 00:00:00 GMT How AI crawlers work and what they look for on your site https://llmtxt.info/blog/ai-crawlers-explained/ https://llmtxt.info/blog/ai-crawlers-explained/ AI crawlers like GPTBot, ClaudeBot and PerplexityBot differ from Googlebot in how they use what they fetch. Wed, 22 Apr 2026 00:00:00 GMT llms-full.txt: the complete guide to the companion file https://llmtxt.info/blog/llms-full-txt-guide/ https://llmtxt.info/blog/llms-full-txt-guide/ llms-full.txt inlines full page content for AI retrieval. What it is, when to use it, how to create it. Wed, 22 Apr 2026 00:00:00 GMT llms.txt for documentation sites: structure it for AI https://llmtxt.info/blog/llms-txt-documentation-sites/ https://llmtxt.info/blog/llms-txt-documentation-sites/ Docs sites are the ideal use case for llms.txt. What to include and exclude. Wed, 22 Apr 2026 00:00:00 GMT llms.txt for API-first products: a developer guide https://llmtxt.info/blog/llms-txt-for-api-products/ https://llmtxt.info/blog/llms-txt-for-api-products/ API-first products benefit especially from llms.txt. What to include, with a full example template. Wed, 22 Apr 2026 00:00:00 GMT llms.txt vs robots.txt: key differences explained https://llmtxt.info/blog/llms-txt-vs-robots-txt/ https://llmtxt.info/blog/llms-txt-vs-robots-txt/ robots.txt controls crawler access. llms.txt gives AI models structured context. Neither replaces the other. Wed, 22 Apr 2026 00:00:00 GMT How to measure if your llms.txt is working https://llmtxt.info/blog/measure-llms-txt-impact/ https://llmtxt.info/blog/measure-llms-txt-impact/ How to triangulate llms.txt impact: AI referral traffic, server logs, manual citation tests. Wed, 22 Apr 2026 00:00:00 GMT What is GEO? Generative Engine Optimization explained https://llmtxt.info/blog/what-is-geo/ https://llmtxt.info/blog/what-is-geo/ GEO is optimizing content to appear in AI-generated answers. How it differs from classic SEO. Wed, 22 Apr 2026 00:00:00 GMT