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llms.txt
llms.txt is a proposed plain-text Markdown file placed at a site's root to give large language models a concise, curated guide to its most important pages. Proposed by Jeremy Howard of Answer.AI in September 2024, it remains an unofficial proposal: Google has confirmed it does not use llms.txt and that it is not a ranking signal, and no major AI provider has committed to it. Adoption is low, with most published files reportedly receiving no requests as of 2026.
Source: searchenginejournal.com
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