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47· Steady
Technology1h 55m ago
John Mueller stated that LLM systems cannot use files like llms.txt to differentiate between websites for search query results.
global
Who
Google’s John Mueller
What
John Mueller stated that LLM systems cannot use files like llms.txt to differentiate between websites for search query results.
When
Mon, 15 Jun 2026 16:28:02 GMT · 1h 55m ago
Where
global ·
Why
Mueller argues that llms.txt files are self-reported and cannot be trusted "by design" for differentiating between websites.
The Frontline Impact
How this affects you
This suggests a significant limitation for LLMs in website discovery, impacting how information is surfaced and potentially delaying standardization of agentic systems; however, llms.txt files may still be useful for agent navigation once a website has been chosen.
Story chain
2 events in this thread- Currently Reading1h 55m agoJohn Mueller stated that LLM systems cannot use files like llms.txt to differentiate between websites for search query results.
- Technology1h 55m agoJohn Mueller stated that LLM systems cannot use files like llms.txt to decide which websites to surface for a given query.Open article
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