# ModelWatch
> AI model pricing, context windows and change history.
## Source
published provider pricing
## Coverage
3,212 models across every provider we track.
Data as of 2026-09-06.
## URL patterns
- https://modelwatch.keelhelm.com/model/{provider}/{model_id}
## Machine-readable
Append ?format=json to any record URL for that record as JSON.
## Attribution
Cite as: ModelWatch (https://modelwatch.keelhelm.com), sourced from published provider pricing.