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Unified LLM API gateway with one OpenAI-compatible endpoint for GPT, Claude, Gemini, Grok — smart routing, automatic fallback, per-request cost traces, and per‑
Router One is a unified LLM API gateway that lets developers access 30+ frontier models (GPT, Claude, Gemini, Grok, etc.) through a single OpenAI‑compatible endpoint at https://api.router.one/v1. Instead of managing multiple SDKs, auth flows, and billing systems, teams change only their base URL and API key to gain intelligent routing, automatic same‑model failover, and full observability on every request.