OpenRouter API

Last verified against OpenRouter's public documentation, OpenAPI specification, changelog, and official skill repository: 2026-07-25.

OpenRouter exposes several interoperable API “skins” plus specialized media, retrieval, and administration endpoints under one base URL:

https://openrouter.ai/api/v1

The endpoint surface is relatively stable, but the model catalog, aliases, providers, capabilities, accepted parameters, prices, rate limits, service tiers, and beta features change frequently.

Non-negotiable operating rules