Unify Universal API

The Unify Universal API provides a single REST endpoint with Bearer token authentication for routing LLM requests to 100+ model providers including OpenAI, Anthropic, Mistral, Together AI, Replicate, Groq, DeepSeek, Vertex AI, and more. Requests use the model@provider syntax for explicit routing or optimizer strings for automatic routing based on quality, cost, and speed preferences. The API is OpenAI-compatible, supports streaming, caching, fallbacks, and structured logging.