The llms-txt.io Insider’s Guide
Everything we know about llms-txt.io in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
llms-txt.io
The Insider’s Guide
llms.txt generator, validator, API and auto-updating managed files
Every plan, grade, refund rule and rival among AI search visibility tools, read from llms-txt.io’s own pages.
Made by Lemon Tree Ventures, LLC · checked Oct 23, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from llms-txt.io’s own pages, its app-store listings and our grades. Every fact in it is on llms-txt.io’s page too, where it is kept up to date. Checked Oct 23, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
3.0
GPA, above 154 of the 157 other AI search visibility tools we grade
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.
To get you started, here are 9 things to know about llms-txt.io, taken from its own pages and our grades.
No rating on record, but the web generator needs only a URL and no account.
- 1
Best for llms.txt files that keep up with your docs
The web generator is free with no account.
- 2
Paid plans start at $15 a month
As its pricing page puts it: $15 per month for 1 managed site, billed monthly.
- 3
There is a 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.
- 4
It runs on Web
Web.
- 5
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.
- 6
Validator
Lints a file, by URL or pasted text, for structure and readiness for AI agents, and gives a score with what to fix.
- 7
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.
- 8
A 3.0 GPA, above 154 of 157
That is against the other AI search visibility tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
Nothing llms-txt.io does is plain enough to make in a weekend. The 2 things listed below take a company.
llms-txt.io at a glance
- Pricing
- Free plan, from $15 per month for 1 managed site, billed monthly
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- Lemon Tree Ventures, LLC
- Category
- AI Search Visibility (AEO & GEO)
- Our grade
- 3.0 GPA, very good
The report card
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.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | The 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. |
| Free plan and trial | B | Unlimited 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. |
| Features | C | A 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. |
| Ease of use | B | No 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. |
| Platforms and integrations | B | Web 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. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
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 it 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
Good to know
Good for
- Developer-tool and API companies whose docs are read by coding assistants
- Teams that want their llms.txt to update itself as the docs change
- Agencies and platforms producing llms.txt files for many sites
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.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$15
A month to start. There is a free plan too
llms-txt.io has a free plan. Paid plans start at $15 per month for 1 managed site, billed monthly.
Free
$0
Unlimited web generation, llms-full.txt up to 20 pages, 25 API generations and 2,000 API validations a month.
Starter
$15
per 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
$49
per 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.
The 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.
Read from llms-txt.io on Oct 23, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
llms.txt generator, validator, API and auto-updating managed files. Here is what it does, as its own site describes it, and what it covers: public API, site audit.
A generator, a validator, an agent readiness scan, an API and files that regenerate when content changes.
- 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.
Where it runs
- Web
What it works with
Its own pages name no integrations.
llms-txt.io is made by Lemon Tree Ventures, LLC.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
154/157
Other AI search visibility tools it is graded above
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
- BFree plan and trialAbove 152 of 157
- CFeaturesAbove 6 of 157
- BEase of useAbove 146 of 157
- BPlatforms and integrationsAbove 51 of 157
Price against what you get
Each dot is one of 131 AI search visibility tools. Further left costs less; higher up scores better on features, ease of use and platforms. llms-txt.io is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
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.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
llmstxt.studio, LLMs Ledger, LightSite AI, Known Agents and Prominara
The 5 tools llms-txt.io is most often weighed against, with where each one differs from it.
- 2.4GPA
llmstxt.studio
Free plan · from £15.83/mo
AI readiness audit and llms.txt generator with scheduled monitoring.
- llmstxt.studio also covers AI search visibility.
- 2.8GPA
LLMs Ledger
Free plan · from $9/mo
Public llms.txt directory with a validator and nightly file monitoring.
- 1.8GPA
LightSite AI
Free trial · from $129/mo
AI-readable site layer with AI bot analytics and visibility tracking.
- llms-txt.io has a free plan. LightSite AI does not, though it has a free trial.
- llms-txt.io also covers site audit.
- LightSite AI also covers web analytics, AI search visibility and schema markup.
- 2.6GPA
Known Agents
Free plan · from $25/mo
Analytics and access control for the AI bots that visit your site.
- llms-txt.io also covers site audit.
- Known Agents also covers web analytics and AI search visibility.
- 2.2GPA
Prominara
Free trial · from $29/mo
AI visibility tracking with site audits and fixes for agencies.
- llms-txt.io has a free plan. Prominara does not, though it has a free trial.
- Prominara also covers reports, AI search visibility, content optimization and schema markup.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is llms-txt.io free?
llms-txt.io has a 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.
How much does llms-txt.io cost?
llms-txt.io lists 4 plans. Free: $0.
What platforms does llms-txt.io work on?
llms-txt.io is available on Web.
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.
Who makes llms-txt.io?
llms-txt.io is made by Lemon Tree Ventures, LLC.
What are the alternatives to llms-txt.io?
The closest alternatives to llms-txt.io in our directory are llmstxt.studio, LLMs Ledger, LightSite AI, Known Agents and Prominara.
How does llms-txt.io compare with other 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.
Is llms-txt.io good value for money?
ToolGPA grades llms-txt.io A for value for money. 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.
Could I make my own version of llms-txt.io?
Nothing llms-txt.io does is plain enough to make in a weekend. The 2 things listed below take a company.
Where this guide comes from
The prices, plans, platforms and features were read from llms-txt.io’s own pages on Oct 23, 2026, and the grades were given on Oct 24, 2026. 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.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Lemon Tree Ventures, LLC. Prices change, so check llms-txt.io before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
3,189
Tools graded, in 94 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
3,189
tools graded
94
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- llms-txt.io, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/llms-txt-io
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "llms-txt.io: The Insider's Guide", checked Oct 23, 2026. https://toolgpa.com/tools/llms-txt-io
Know someone choosing between AI search visibility tools?
Send them this guide: toolgpa.com/tools/llms-txt-io/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded AI search visibility tools after llms-txt.io, each with an Insider's Guide of its own.
- AI Search Visibility (AEO & GEO) Insider's GuideEvery one of the 158 AI search visibility tools we grade, compared
- geoSurge Insider's GuideFree AI visibility tracking that runs on your own AI subscriptions3.0 GPA
- Rankscale AI Insider's GuideCredit-based AI visibility tracker covering 17+ AI engines3.0 GPA
- TollBit Insider's GuideAI bot analytics, paywall and agent-ready sites for publishers3.0 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what llms-txt.io’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. llms-txt.io is a trademark of its owner, and this guide is not made, paid for or approved by Lemon Tree Ventures, LLC. Prices and plans change: check llms-txt.io before you buy.