UnoRouter is a multi-provider AI gateway for product builders that keeps one API key working across OpenAI, Anthropic, Google, Meta, DeepSeek, Qwen and Mistral. Calls use the OpenAI format, smart routing picks a healthy provider and retries on failure, and it plugs into your code, Claude Code, Cline or OpenCode. Open source, local-first chat, free models, then pay as you go with no subscription.