RouterBase

RouterBase is a unified API gateway that provides access to 200+ AI models including GPT, Claude, Gemini, Llama, Mistral and DeepSeek through a single OpenAI-compatible endpoint. It works as a drop-in replacement for the OpenAI SDK, so developers can integrate any model without managing separate setups. Smart routing optimizes requests by cost, latency or availability, while automatic failover keeps uptime high by switching providers during outages. Billing is consolidated into one invoice with usage analytics by model, API key or project. RouterBase supports streaming, tool calling, vision inputs, JSON mode and prompt caching, with SDKs for Python, Node.js, Go and Ruby. A free tier is available to get started.