OpenRouter Chat Completions Models

OpenRouter is a unified API gateway that routes requests to many LLM providers through one endpoint.

Chat Completions sends conversational prompts and returns model-generated replies. This is the main endpoint used by most AI apps.

Claude Opus 5Claude Sonnet 4.6Gemini 3.1 ProGemini 3.5 FlashGPT-5.6 LunaGPT-5.6 SolLlama 4 MaverickMistral Large 2512Mistral Small 3.2Muse Spark 1.1