LLMs Ledger vs llms-txt.io (2026): which should you pick?

Pick LLMs Ledger if

• Fits if you want to know your llms.txt still works after each site update, from $9 a month
• Works for developers who want a CI build to fail when an llms.txt has errors

Look elsewhere if

• Not for you if you want to know whether AI assistants mention or cite you, as it doesn't track that
• Watch out: the free listing needs a badge linking to LLMs Ledger, and it's hidden if the badge is gone for 14 days
• Tight if you stay free, as the file is checked only every 3 months
• Skip it if you look after several sites, since every plan but Agency covers one, and Agency comes in 10-site packs at $79 a month
• Watch out: the vendor says it can't promise a listing makes AI assistants read or cite your site

Pick llms-txt.io if

• 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

Look elsewhere if

• 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

LLMs Ledger

• It checks and lists llms.txt files; it does not track whether AI assistants mention or cite a business.
• The free listing depends on a badge on your site and checks the file only every 3 months.
• Every plan except Agency covers one site; Agency is sold in 10-site packs, and over 100 sites means contacting the company.
• The vendor says it cannot promise that a listing makes AI assistants read or cite a site.

llms-txt.io

• 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.

LLMs Ledger

llms.txt validator

Scores a file out of 100 against the llms.txt proposal, with each error or warning explained and the change to make; free on the site.

Directory listing

Each submitted site gets a public listing page with its summary, score, validation status and change history, linking back to the site.

Monitoring and version history

Paid plans re-fetch the file monthly or nightly, keep every version with a line-by-line comparison and email when it breaks or changes.

AI readiness check

A free 100-point check of HTTPS, whether Google, Bing, ChatGPT, Perplexity and Claude crawlers are allowed, structured data, sitemap and speed.

Generator

Writes an llms.txt for sites that do not have one yet, to publish and then submit to the directory.

API and webhooks

A free, keyless validator API for scripts and CI builds, plus a keyed API for your own sites and webhooks when a site changes, breaks or goes live.

llms-txt.io

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 Ledger

• Free$0

  Public listing with score and fixes, file checked every 3 months. Needs a badge on your site; the listing is hidden if it is gone 14 days.

• Monthly$9

  per month for 1 site, file checked monthly

  No badge needed, weekly AI readiness re-checks, every version kept and an email if the file stops working. $90 billed yearly.

• Nightly$19

  per month for 1 site, file checked nightly

  Adds a nightly check of every link in the file, an email showing what changed, a Checked nightly label and a place first in results. $190 yearly.

• Agency$79

  per 10-site pack / month, checked nightly

  The Nightly plan for 10 client sites per pack, weekly readiness checks for all and one dashboard; add packs any time. $790 yearly.

llms-txt.io

• 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.

• BusinessCustom

  Up to 250 managed sites, custom volumes and rate limits, and an embeddable or white-label generator. Sold through sales.

LLMs Ledger

• Annual discount

  Two months free with yearly billing

  The pricing page offers yearly billing at two months free: Monthly is $90 a year, Nightly $190 and each Agency pack $790.

llms-txt.io

No public discounts listed.