OpenRouter

OpenRouter is a unified API that provides access to hundreds of language models from multiple providers through a single interface. Developers use it to route API calls across different models, allowing them to choose based on cost, speed, availability or other criteria. The service integrates models from numerous providers into one OpenAI-compatible API, eliminating the need for separate subscriptions or integrations with each model provider. OpenRouter handles model selection and failover when providers experience downtime, while also allowing developers to set data policies to control which models and providers receive their requests.

The platform supports over 500 models across 80 providers and handles text, images, videos and audio. Developers pay per token used with any model rather than through subscriptions, and can obtain an API key to start making requests after signing up and purchasing credits. OpenRouter runs distributed infrastructure to minimize latency between users and model inference.