UnoRouter

UnoRouter is a single gateway for large language models. You sign up once, get one API key, and reach models from OpenAI, Anthropic, Google, DeepSeek, Qwen, Mistral and many other providers through one OpenAI compatible endpoint. Switching from one model to another is a change of the model name, not a new SDK or a new billing account. Requests are routed across healthy providers, and when one of them goes down the gateway fails over on its own, so a single outage does not stop your app. It plugs into your own code, Claude Code, Cline, SillyTavern, RisuAI and most clients that speak the OpenAI API. The whole stack is open source, and the built in chat keeps conversations in your browser instead of on a server. There is a free tier to try it, then pay as you go with no subscription.