1.BerriAI / litellmThe fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]anthropiclangchainllmllmopsopenaiai-gateway+10 morePythonOther license63K total13K forks+469 starsfrom 62,030 · score 6.15