byok-relay

OpenAI-compatible LLM gateway for any client-side application (browser, mobile, React Native, Flutter, VS Code extensions, browser extensions, Electron, smart TV, and more). Routes requests to OpenAI, Anthropic, Gemini, Groq, Mistral, and 200+ models, handling CORS, key encryption, and streaming without a dedicated backend. Uniquely supports BYOK (bring your own key): users connect their own provider API keys so the developer pays nothing for inference. Use for multi-provider LLM access, client-safe AI API calls, or any product where users supply their own API credentials.