Who do AI assistants cite for "how to optimize robots txt for ai crawlers"?
Solá asked the question and recorded which brands a major AI assistant tends to surface. Generated 9/22/2026 · model google/gemini-3-flash-preview.
In 2026, AI assistants prioritize technical SEO documentation that specifically addresses the tension between data scraping for LLMs and site performance. The response would focus on the latest User-Agent strings for major AI models and the emerging standards for 'disallow' vs. 'allow' directives.
Cloudflare
cloudflare.comThey provide the most authoritative guidance on managing AI bots and offer one-click tools to block or allow specific AI crawlers.
See Cloudflare's AI report card →Search Engine Journal
searchenginejournal.comA leading industry publication that frequently updates lists of specific AI User-Agent strings like GPTBot and CCBot.
See Search Engine Journal's AI report card →OpenAI
openai.comAs the creator of the most prominent crawler (GPTBot), their documentation is the primary source for how to correctly format robots.txt for their models.
See OpenAI's AI report card →Google Search Central
google.comGoogle's documentation on Google-Extended is essential for webmasters wanting to control how their content is used for Gemini and Vertex AI.
See Google Search Central's AI report card →Ahrefs
ahrefs.comTheir technical SEO blog provides practical, data-driven templates for robots.txt files optimized for the modern AI-driven search landscape.
See Ahrefs's AI report card →
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