Today's input and output price per million tokens (usd_per_mtok) for a model id, with the first-party source. Accepts short or aliased ids (e.g. "claude-opus-4-8", "gpt-4o", "gemini-2.5-pro"). Pass provider to disambiguate a bare id shared across vendors.

The input and output price per million tokens that was IN EFFECT on a given date (YYYY-MM-DD), with the source that proves it. This is the point-in-time lookup: use it to value past usage or to see how a price changed over time. covered=false means the date predates the model's recorded coverage.

Side-by-side input/output prices for several model ids on one date (today by default, or pass date as YYYY-MM-DD). Each row resolves independently; unknown ids are reported per row.

Value a token rollup in USD at a point in time, using the shared cache multipliers (cache read 0.1x input, cache write 1.25x for 5m / 2x for 1h). tokens accepts input, output, cache_read, cache_write_5m, cache_write_1h. Defaults to today if no date is given.

List the model ids known to the dataset, optionally filtered to one provider, each with its provider and aliases. Use this to discover valid ids for the other tools.