UnoRouter

UnoRouter is an open source gateway that mirrors the OpenAI API, so one key and one base URL give you Claude, GPT, Gemini, DeepSeek, Qwen and plenty of open models. If a provider goes down or rate limits you, traffic fails over to another one on its own. It drops into Claude Code, Cline and SillyTavern without code changes. Use the free models first and pay as you go afterwards, no subscription required. A local first chat app ships alongside the API.