These are the working rules, not aspirations. The last one is enforced by an automated check that fails the build.
- Prices come from the vendor's own page
- Every figure is copied from the company's published pricing page. Third-party round-ups, sales decks and review sites are not used as price sources, because they are frequently stale and rarely dated.
- Every figure carries the date it was checked
- Vendors are re-checked at different times, so each row shows its own date rather than borrowing a single page-level claim that would overstate how fresh the oldest entry is.
- A price is never inferred
- If a vendor advertises a discount but does not publish the resulting figure, that figure does not get calculated and printed as though it were verified. This rule exists because we broke it once.
- Currencies are never converted
- These vendors bill in dollars, pounds and euros. Converting between them produces a number that changes daily and that the vendor never quoted, so prices stay in the currency they are published in.
- No published price means exactly that
- When a company does not publish pricing, the page says so and explains what is available instead. No estimate is substituted, however widely one is repeated elsewhere.
- Only comparable units are compared
- Tracked prompts, metered credits and bulk analysis volumes are different products. Cost-per-prompt figures cover only vendors publishing a comparable allowance, and the excluded ones are named.
- Competitors are described in their own terms
- Each comparison states what a competitor is genuinely good at before explaining where this product differs. A comparison a reader cannot trust about the competitor cannot be trusted about us either.
- No structured data that misrepresents another company
- Competitor prices are published in readable tables, never as schema.org Offer markup. Offer markup asserts that this site sells that product at that price, which would be false for every vendor listed.
- Stale data fails the build
- An automated check fails if any vendor's pricing has gone unverified for more than 45 days, so the maintenance claim on these pages is enforced rather than intended.
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