llms-txt.io review (2026): is the free plan enough?
llms.txt generator, validator, API and auto-updating managed files
llms-txt.io report card
Very good · out of 4.0 · graded Oct 24, 2026
Best for llms.txt files that keep up with your docs
llms-txt.io writes llms.txt and llms-full.txt files from your site, checks existing ones, and on paid plans keeps them current as your docs change. The web generator is free with no account. But free llms-full.txt files stop at 20 pages, and the tool doesn't track whether AI answers mention you at all.
Who llms-txt.io is for
- Fits if your docs are read by AI coding assistants and you want an llms.txt for them
- Works for teams that want the file regenerated when the docs change, from $15 a month
Who llms-txt.io is not for
- Not for you if you want to know whether AI search mentions or cites you, as it doesn't track that
- Tight if your site is big: llms-full.txt stops at 20 pages free, 50 on Starter and 100 on Pro
- Watch out: the free API returns only the short llms.txt, and calls past the monthly quota fail until the month resets
- Pricey if you need more than 10 managed sites or a white-label generator, which need the sales-priced Business plan
- Skip it if you want yearly billing, as plans are monthly only
Why llms-txt.io gets a 3.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyThe web generator is free with no account, and a managed site that stays current is $15 a month, under $17.40, which is 60% of where this category's cheaper quarter starts. Pro is $49 for 10 sites.
- BFree plan and trialUnlimited web generation with no account, plus an API key with 25 generations and 2,000 validations a month. The limits: llms-full.txt stops at 20 pages, and keeping files current needs a paid plan.
- CFeaturesA generator, a validator, an agent readiness scan, an API and files that regenerate when content changes. It does the llms.txt job fully, but that's a smaller job than this category's, with no tracking of AI answers.
- BEase of useNo rating on record, but the web generator needs only a URL and no account. The API and webhooks are there for developers who want them.
- BPlatforms and integrationsWeb only, with no desktop or phone app and no named integrations. An API on every plan, the free one included, and webhook delivery let scripts and CI use it.
What these grades rest on. Graded from this listing, whose facts were read from llms-txt.io's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
Make llms-txt.io? Put this grade on your site
Paste this where you want the badge. It links here and follows the grade if it changes. About badges
<a href="https://toolgpa.com/tools/llms-txt-io#review"><img src="https://toolgpa.com/badge/llms-txt-io.svg" alt="llms-txt.io: 3.0 GPA on ToolGPA" width="196" height="56"></a>Where llms-txt.io stands among AI search visibility tools
llms-txt.io's GPA of 3.0 is higher than 154 of the 157 other AI search visibility tools we grade, and level with 3.
It stands best on value for money (A, above 146 of 157) and worst on features (C, above 6).
Its paid plans start at $15 a month, against a middle price of $59 for the category: 5 of the 128 others that charge start lower.
On features, ease of use and platforms it scores 2.7 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 158 AI search visibility tools we grade, cut by the letter each got. llms-txt.io’s own letter is outlined.
- AValue for moneyAbove 146 of 157, level with 11
- BFree plan and trialAbove 152 of 157, level with 2
- CFeaturesAbove 6 of 157, level with 118
- BEase of useAbove 146 of 157, level with 11
- BPlatforms and integrationsAbove 51 of 157, level with 106
Price against what you get
Each dot is one of 131 AI search visibility tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep llms-txt.io, or make your own?
Keep it
Nothing llms-txt.io does is plain enough to make in a weekend. The 2 things listed below take a company.
It is one of the better ones too: its GPA of 3.0 is higher than 154 of the 157 other AI search visibility tools we grade. It costs $180 a year.
What you could not
- A crawler that checks every page of a site.
- An API that other software can build on.
What this rests on. llms-txt.io’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is llms-txt.io?
llms-txt.io builds llms.txt and llms-full.txt files from a website, with AI-written summaries and link descriptions, and lints existing files for structure. Paid plans add an API for generating and validating from code or CI, and managed sites whose files are regenerated on a schedule when the content changes and served from a stable URL. It is aimed at documentation sites that want to be read cleanly by AI coding assistants and agents.
Worth knowing
- It produces and checks llms.txt files; it does not track whether AI search engines mention or cite a brand.
- Through the API, llms-full.txt needs Starter or above; the free API plan returns only the shorter llms.txt.
- API calls past the monthly quota return errors until the next month, and unused quota does not roll over.
- Plans are billed monthly in US dollars; the pricing page lists no annual option.
Key features
- llms.txt and llms-full.txt generator
- Crawls a site and writes spec-following files with AI-written summaries and per-link descriptions; free on the web with no account.
- Validator
- Lints a file, by URL or pasted text, for structure and readiness for AI agents, and gives a score with what to fix.
- Managed sites
- Re-checks a site weekly or daily, regenerates only when content changes, and serves the file from a stable URL or pushes it to a webhook.
- API
- Generate and validate files from scripts, CI or another product with API keys and monthly quotas that reset each calendar month.
- Agent Readiness Score
- A free scan of 19 checks on whether AI coding agents can reach, find, read and build from a site's public documentation.
llms-txt.io pricing
As of Oct 23, 2026, llms-txt.io has a free plan, and paid plans start at $15 per month for 1 managed site, billed monthly.
- Starts at
- $15 per month for 1 managed site, billed monthly
- Free plan
- Unlimited use of the web generator with no account, llms-full.txt up to 20 pages, and an API key with 25 generations and 2,000 validations a month.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | Unlimited web generation, llms-full.txt up to 20 pages, 25 API generations and 2,000 API validations a month. |
| Starter | $15per month for 1 managed site, billed monthly | Files kept current weekly or daily from a stable URL with a change webhook, 400 API generations a month and llms-full.txt up to 50 pages. |
| Pro | $49per month for up to 10 managed sites, billed monthly | llms-full.txt up to 100 pages, scheduled regeneration with webhook delivery, 1,500 API generations a month and higher rate limits. |
| Business | Custom | Up to 250 managed sites, custom volumes and rate limits, and an embeddable or white-label generator. Sold through sales. |
Read from llms-txt.io on Oct 23, 2026. Prices change, so confirm with llms-txt.io before you buy.
llms-txt.io alternatives
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- llms-txt.io vs LightSite AI
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- llms-txt.io vs Known Agents
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- llms-txt.io vs Prominara
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Common questions
Does llms-txt.io have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. llms-txt.io is listed for Web.
Does llms-txt.io have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. llms-txt.io is listed for Web.
Is llms-txt.io open source?
llms-txt.io is not described as open source on its own site, as read on Oct 23, 2026.
Does llms-txt.io have an API?
Yes. llms-txt.io offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 23, 2026.