1 answer. Every figure carries its source. Where the number is ours, the method is published with it.
No for Google, and unproven everywhere else. Google's documentation says an llms.txt file will neither harm nor help visibility, because Google Search ignores it. A November 2025 vendor study by SE Ranking, not independently reviewed, found no correlation between the file and AI citations across nearly 300,000 domains. Its real use is narrower: guiding AI agents through developer documentation.