B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Current

23.6%

23.6% -- llms txt adoption rate for Next.js websites (audited domains) (2026-09)

Name: Llms Txt Adoption Rate Statistics
Creator: Lighthouse Intelligence
Published: 2026-09-18

2026-09 · n=601 · Greadme

23.6% of audited Next.js websites had an llms.txt file as of September 7, 2026.

Table column labels in source are concise ('Sites with llms.txt')
Per-platform sample sizes are not broken down beyond the total 601 audited domains

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Attribution: Greadme View source

Lighthouse Research Team

Last verified: 2026-09-18 · How we verify data →

Source verified Evidence graded

Value

23.6%

Unit

Percentage

Data Vintage

2026-09

Entity

Next.js websites (audited domains)

Sample Size

601

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

Greadme Primary Tier A

https://www.greadme.com/blog/seo/is-llms-txt-worth-it-for-ai-search ↗

Confidence: 59/100 Vintage: 2026-09 Channel: Deep Crawl

Source Article

Is llms.txt Worth It for AI Search?

TL;DR# - For Google, no. Google has officially confirmed in its own documentation that it does not need or use llms.txt to surface your site in Search or AI features (AI Overviews and AI Mode). - For OpenAI, there is no official support. OpenAI's own crawler documentation controls its bots through r…

Original Research

Greadme · Original study ↗

Methodology

Greadme live check of 601 audited domains conducted 7 Sep 2026, published in Greadme State of Websites Report 2026. Table column labels were not fully rendered in the source; figures interpreted from context as share of audited domains with an llms.txt file by website platform. Per-platform sample sizes not disclosed.

Methodology documented

Segmentation

Industrymarketing

Cite this stat

Plain Text

Next.js websites (audited domains): 23.6% llms txt adoption rate. Source: Greadme (2026-09). Via Lighthouse Intelligence -- https://lighthousedata.io/data/llms-txt-adoption-nextjs-sep-2026

HTML Embed

<blockquote cite="https://lighthousedata.io/data/llms-txt-adoption-nextjs-sep-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>23.6%</strong> -- llms txt adoption rate for Next.js websites (audited domains)<br><small>Source: Greadme (2026-09) · <a href="https://lighthousedata.io/data/llms-txt-adoption-nextjs-sep-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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