Assess whether to implement llms.txt based on its actual current adoption and support status

Steps

1. Check current adoption data (independent studies tracking millions of domains) to size how common llms.txt actually is before treating it as a checklist item
2. Check Google's public position directly — Google Search Central staff have publicly said Google doesn't use llms.txt for AI Overviews or AI Mode, and Google's own AI-optimization guidance tells site owners it isn't needed
3. Check whether OpenAI, Anthropic, Perplexity, or other AI platforms have made any public commitment to consuming llms.txt — as of mid-2026 none of the major providers has officially confirmed using it as a ranking or citation signal
4. If you proceed anyway, treat it as a low-cost, low-certainty experiment (a curated Markdown summary/links file at /llms.txt), not a proven traffic driver
5. Re-check the standard's status periodically — it remains a community convention (llmstxt.org) without IETF or major-platform standardization as of today