Add MiniMax to the provider registry with OpenAI-compatible protocol.
Available models:
- MiniMax-M2.5 (default) - 204,800 token context window
- MiniMax-M2.5-highspeed - same performance, faster inference
Configuration:
LLM_BACKEND=minimax
MINIMAX_API_KEY=<your-key>
Supports both global (api.minimax.io) and China mainland
(api.minimaxi.com) endpoints via MINIMAX_BASE_URL env var.
Co-authored-by: PR Bot <[email protected]>
