Not sure where to start? Take a guided tour.
AI Site Grader
AI Query Scanner
llms.txt GeneratorWhich industries adopt llms.txt most?
SaaS and developer-heavy sites adopt llms.txt most aggressively. In the study, SaaS and developer tools reach 24.1% adoption, while government and academic sites sit at only 1.5%.
The key numbers.
- SaaS/developer adoption
- Highest named category adoption in the study.
- 24.1%
- Government/academic adoption
- Much lower adoption outside SaaS-heavy sectors.
- 1.5%
The file is still culturally concentrated among technical teams rather than broadly adopted across the web.
The evidence.
Source
The llms.txt Effect
| Measure | Result |
|---|---|
| SaaS/developer adoption Highest named category adoption in the study. | 24.1% |
| Government/academic adoption Much lower adoption outside SaaS-heavy sectors. | 1.5% |
Population and method
Built from HTTP scans of 37,894 AI-cited domains, linked to 337,362 citations and 882 citation snapshots in the Trakkr corpus.
Where the evidence stops
This is an observational study. It measures correlation with citation outcomes, not a controlled experiment.
Adoption is uneven by sector, so raw averages can hide category concentration in SaaS and developer tooling.
The top-5,000 test returns p=0.85. The full scanned sample returns p<0.001 with reported r=-0.065. Neither establishes a causal effect. The public aggregates do not include confidence intervals or document the cohort for citation means and medians well enough to recompute the tests.
What to do with this
- Treat llms.txt as an optional housekeeping file, not a primary citation-growth lever.
- Prioritize answer quality, source coverage, and page structure before spending disproportionate effort on llms.txt.
- If you do publish llms.txt, measure discovery and crawl behavior directly instead of assuming it improved citation performance.
This answer matters because it turns a study finding into an operating rule teams can use when they decide what to publish, refresh, or measure next.
Questions about this answer.
Cite this answer.
Source study: llms.txt Effect“SaaS and developer-heavy sites adopt llms.txt most aggressively. In the study, SaaS and developer tools reach 24.1% adoption, while government and academic sites sit at only 1.5%.”
Mack Grenfell · Which industries adopt llms.txt most?
The llms.txt Effect · Trakkr Research · Updated 4 September 2026