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A canonical model ID (a stable, provider-agnostic string like gpt-4o-2024-08-06 or claude-sonnet-4-6) is the model identifier you pass in API requests. You can also pass an alias — a shorter name that resolves to a canonical ID, such as claude-opus-4-5 (which resolves to claude-opus-4-5-20251101); each model’s aliases are listed in its directory entry. Auriko maintains a live model directory. It’s the authoritative source for all available models, their status, providers, and pricing.

Query model directory

GET /v1/directory/models returns every canonical model with full metadata: context window, pricing, capabilities, supported modalities, supported endpoints, and provider availability. The endpoint is public and doesn’t require authentication.
See the Model directory reference for the full response schema.

Query model catalog

GET /v1/registry/models returns a leaner list of canonical ID, author, status, and provider availability, without pricing details.
See the Canonical model records reference for the full response schema.