Full catalog of tracked models with current prices and index-member flag

Returns every tracked model, including non-latest family versions. Sourced from Model rows + the live catalog (ModelPrice); the indexMember flag is set when the model is the current family representative in the latest CONFIRMED revision's manifest. Models without a catalog price row are excluded. currentPrice is the flat rate; a model priced in context tiers also carries contextTiers — ascending input-token thresholds, each with its own input and output price — and a request above a threshold is billed at that tier rather than at currentPrice. A model that declares the context window its vendor serves carries maxInputTokens; absent means only the request-body ceiling bounds it. Every number carries its own provenance mark — currentPrice marks input and output separately, each context tier and each cache/reasoning component carries one of its own — so one model can be promotional at its flat rate and verified above a threshold. The mark weighs a number, it never changes it, and it never enters the SCU manifest. Models are identified by the canonical vendor-prefixed id (openai/gpt-5.5).