OrcaRouter is an AI gateway and adaptive LLM routing layer that sits between your app and 200+ models, using embeddings and online learning (contextual bandits) to score each request and automatically route it to the model that best balances capability, latency, cost, and policy; it offers a single OpenAI‑compatible endpoint, programmable routing rules and DSL, guardrails and agent firewall for governance, observability and fallback chains, and an open‑source Lite edition, making it useful for teams that want lower inference costs, vendor‑agnostic reliability, and centralized safety and analytics for production AI.