RouterBase is an AI API gateway that routes 200+ AI models from OpenAI (GPT), Anthropic (Claude), Google (Gemini), Meta (Llama) and more through a single OpenAI-compatible endpoint. It offers smart routing, automatic failover, and unified billing — so developers integrate once and switch freely between models without managing separate provider accounts. Ideal for AI app developers and teams who need reliable multi-model access with lower cost and less maintenance.