This page explains how the articles on AI Models Compared are researched, written, dated and corrected. It is deliberately specific, because the whole point of this site is that you should not have to take our word for a number.
Where the numbers come from
Every price, usage limit, rate limit and quota published here is taken from a primary source: the vendor’s own pricing page, its published documentation, or its official changelog. Third-party blog posts, forum threads and news write-ups are not used as the source for a figure, even when several of them agree. Wherever a number appears on one of our pages, the source it came from is linked on that same page so you can open it and check it yourself.
What happens when a company does not publish a number
Many of the questions people bring to this site do not have a published answer. Anthropic, for example, does not publish a message count for the Claude Pro five-hour window. When that is the case we say so in plain words and name the pages we checked, instead of printing an estimate, a community-sourced figure, or a number carried over from an older version of the product. An article that says the figure is not published, and shows which pages it checked, is more useful than one that invents a number.
Dates and updates
Prices and limits in this category change often. Each article carries the date it was last checked, and that date moves only when someone has actually re-opened the source and re-read it. When a vendor changes a price or a limit, the change is described in the body of the page rather than quietly swapped in.
Who writes this
Chris Chen writes and edits everything published on this site. Research and drafting are assisted by AI tools, which are also the subject of the site. Every figure that reaches a published page has been checked by a person against the primary source, and every source link has been opened.
Corrections
If a number here is wrong or out of date, tell us through the contact page and it will be checked against the source and fixed. A correction that changes a figure is noted on the page itself rather than made silently.
Advertising and independence
Advertising, where it runs on this site, is sold and served by third parties. We do not accept payment for coverage, for placement in a comparison, or for a favourable conclusion, and no advertiser sees a page before it is published. Where a link to a vendor would earn this site a commission, that is disclosed on the page carrying the link.