API preview: generation providers are not connected. An authenticated request can return 503 without creating a task or charging credits.
Count works, not file URLs
Music providers may return several works from one native generation. A work can contain an audio file, cover image, lyrics, and metadata. Those assets are parts of the work, not independent generations. Keep the provider-defined bundle clear in the model page and price rule. A task returning two tracks must not be misreported as two user API calls.This is a conceptual preview, not a generated result. Actual output fields are finalized per model before provider integration.