OpenRouter
toolA unified API gateway that provides access to hundreds of LLMs from multiple providers through a single endpoint.
OpenRouter is an API service that aggregates language models from OpenAI, Anthropic, Google, Meta, Mistral, and dozens of other providers behind a single API. You send requests to one endpoint and specify which model you want.
Beyond simple proxying, OpenRouter provides: model fallback (try multiple models in sequence), provider routing (choose the fastest or cheapest provider for a given model), usage tracking, and rate limit management.
SUBCORP uses the OpenRouter SDK (@openrouter/sdk) for all cloud LLM calls. The models array feature enables native fallback routing — if one model fails, the API automatically tries the next. This is combined with client-side fallback for longer model chains.