Why does one model show a fallback source?
Fallback only appears when the preferred official crawl path is not consistently available. The site labels that explicitly instead of pretending the value came from an official live crawl.
Pricing FAQ
Short answers to the questions that usually block trust: where the number came from, how fresh it is, and what the calculator is actually doing.
What does “Updated” mean?
It is the timestamp of the latest stored pricing snapshot used by the page. It is the primary freshness signal for whether the number is recent enough to inspect further.
What does “Checked” mean?
It is a secondary verification timestamp. When no separate verification pass exists, it can match the latest stored snapshot rather than showing an invented extra step.
Why can a model have history but no recent change?
History means stored points exist. A change event only appears when the newer point differs from the previous one. Same-price refreshes do not create fake events.
Does the calculator match the final provider bill?
No. It is an estimate layer. It normalizes public pricing, then applies the request shape, cache ratio, batch mode, and optional FX conversion shown on the page.
Why is display currency different from source currency?
Source currency is the stored provider price basis. Display currency is only the viewing layer. If FX conversion is unavailable, the calculator falls back to the source currency instead of hiding the row.
Why are some models missing from default compare or calculator views?
The default view favors models with live snapshots so the first screen is decision-ready. Models without a usable current snapshot stay separated instead of degrading the main matrix with `N/A` rows.
What is the difference between cached pricing and batch discount?
Cached pricing discounts the cached share of input tokens. Batch discount is a separate provider execution mode and should not be treated as the same cost mechanic.