LiteLLM

LiteLLM is the unified LLM gateway: call 100+ models (OpenAI, Anthropic, Azure, etc.) using a single, standardized OpenAI-compatible API.

LiteLLM acts as your production-grade LLM gateway, simplifying complex multi-model deployments. It unifies over 100 LLM providers—including OpenAI, Anthropic, and VertexAI—under a single, consistent API call structure (the OpenAI format). This standardization eliminates SDK friction. Key features include the LiteLLM Router for automatic retry and fallback logic across deployments, ensuring high reliability. Additionally, the Proxy Server centralizes cost tracking, allows granular budget setting per virtual key, and provides load balancing, making it essential for ML Platform teams managing scalable, cost-optimized Gen AI applications.

https://litellm.ai