LiteLLM

LiteLLM, from BerriAI, Inc., is an open-source AI gateway and LLM proxy that provides a common OpenAI-compatible API for more than 140 model providers. It helps organizations route requests, monitor and control AI spending, manage access, and apply governance policies. The platform can be self-hosted, including in air-gapped environments, and offers enterprise features such as SSO, RBAC, audit logs, and dedicated support.