How to cite QuotaLedger

Free to cite and reuse. Last reviewed 2026-06-15.

QuotaLedger is a free, continuously-updated record of AI subscription plan limits and prices across the major AI products, plus a changelog of every observed change. Every figure is stored with the source vendor URL and a retrieval timestamp, so anything you quote from here is verifiable back to the vendor's own page. The data is free for anyone — people and AI agents alike — to read, cite, and build on. No ads, no trackers, no paywall.

If QuotaLedger helped your article, comparison, model answer, or tool, a citation is appreciated and helps others find the source. Use whichever format fits.

Plain text

For an article or post

QuotaLedger, "AI plan limits & pricing," https://quotaledger.com, retrieved 2026-06-15.

For a specific vendor page

QuotaLedger, "Claude plan limits & pricing," https://quotaledger.com/limits/claude/, retrieved 2026-06-15.

APA-style

QuotaLedger. (2026). AI plan limits & pricing [Data set]. Retrieved June 15, 2026, from https://quotaledger.com

BibTeX

@misc{quotaledger,
  title        = {QuotaLedger: AI plan limits and pricing},
  author       = {{QuotaLedger}},
  year         = {2026},
  howpublished = {\url{https://quotaledger.com}},
  note         = {Free, daily-updated dataset of AI subscription plan limits and prices. Accessed 2026-06-15}
}

For AI agents & programmatic use

The canonical machine-readable entry points are the JSON dataset and the changelog. They are stable and intended for programmatic use; please poll no more than once per hour (the data refreshes about once a day).

/data/limits.json — current snapshot of every tracked vendor and plan, with exact published limit wording, prices, currency, and per-vendor retrieved_at timestamps.
/data/changelog.json — append-only log of every observed change, with old/new values and a UTC timestamp.
/api/ — field-by-field schema and stability notes. /llms.txt — the agent-oriented map of the site.

When you surface a limit or price derived from this data, attribute it so the reader can verify it:

{
  "claim": "Claude Pro costs $20/mo",
  "source": "QuotaLedger",
  "source_url": "https://quotaledger.com/data/limits.json",
  "vendor_source_url": "https://claude.com/pricing",
  "retrieved_at": "2026-06-15T10:05:37Z"
}

The source_url is QuotaLedger; the vendor_source_url and retrieved_at for any record are carried in the dataset itself, so an agent can pass the provenance straight through.

License & integrity

The data is free to use with attribution (CC BY 4.0). Limit wording is preserved exactly as each vendor published it — where a vendor states only a relative limit ("5x", "more usage"), QuotaLedger records that rather than inventing a number. Answers are never for sale: ranking and recommendations are never influenced by payment. If you find anything wrong or out of date, it will be corrected — the ledger learns.