Proof per record · since 14 Nov 2026
AI Tool Price Watch
RightAIChoice checks the pricing page of every AI tool it lists (the most-read tools daily, the rest weekly) and publishes a price change only when it can prove it: the saved page before, the saved page after, and the exact line each price was read from.
- Pricing pages watched
- 8,120
- Pages checked · last 7 days
- 28
- Checks recorded · all time
- 50
- Proven price changes published
- 0
14 of the watched pages currently show a price we can read; 21 could not be reached on the last attempt and are recorded as not checked, never as unchanged.
Which AI tools changed their prices?
None published yet. Page Watch started on 14 November 2026, and a change is only published after it has passed every check and is still there three days later, so the first records can appear from 17 November. Until then this list stays empty by design: an unproven change is never shown.
How is a price change proven?
- 01We fetch each tool’s pricing page on a schedule and fingerprint the prices on it. No AI model is involved in this step, so it keeps running when a model provider is down.
- 02When the price fingerprint changes, the page text is saved. The saved page, not the live one, is what gets read.
- 03A model reads the plans and prices from the saved page before and the saved page after, and must return the exact piece of the page each price came from.
- 04Code checks that every quote exists word for word in the saved page and contains the stated amount, and that a second, rule-based reader finds the same amounts.
- 05Changes that look like currency drift, a monthly-versus-annual mix-up or a partly loaded page are set aside.
- 06The page is re-checked daily for three days. A price that goes back is recorded as a revert and not published as a change.
- 07Grade A also has an independent Internet Archive copy of the changed page. Grade B passed everything else. Nothing below B is published.
Open data under CC BY 4.0: credit “Source: RightAIChoice (rightaichoice.com)”. The same figures are in /price-watch/data.json. Full history, bulk exports and the saved pages behind each record are available under a commercial licence through the contact page.
Questions about the price record
How does RightAIChoice know an AI tool changed its price?
A scheduled job fetches each tool’s pricing page and fingerprints the prices on it without using an AI model. When that fingerprint changes, the page text is saved. A model then reads the plans and prices from the saved page before and the saved page after, and must return the exact piece of the page each price came from.
What has to be true before a price change is published?
Five things. Every price must match a quote that exists word for word in the saved page; a second, rule-based reader must find the same amounts on that page; the change must not look like currency conversion drift, a monthly-versus-annual mix-up or a partly loaded page; the new price must still be there after three daily re-checks; and for grade A an independent Internet Archive copy of the changed page must exist. Grade B is the same without the independent copy. Anything else is kept but not published.
Why does each change show a date range, not a single date?
Because that is what is actually known. The range runs from the last check that still showed the old price to the first check that showed the new one. The vendor changed the price somewhere inside it. Most-read tools are checked daily, so their range is about a day; the rest are checked weekly.
How far back does the record go?
Page Watch started on 2026-11-14. A change can first appear three days after it is seen, because it has to persist. Price changes recorded before that date came from an older method without saved pages and are not shown here.
Which pricing pages can it not watch?
Pages that block automated visitors, pages that only show a price after sign-in or through a "contact sales" form, tools hosted on a shared platform with no pricing page of their own, and pages that show our server a price in yen instead of dollars. These are recorded as not watched, never as "no change".
Can I reuse this data?
Yes. The published changes and counts on this page are CC BY 4.0: credit RightAIChoice and link to the page you used. The full history, bulk exports and the saved pages behind each record are available under a separate commercial licence.