One API is a self-hosted key-management and distribution gateway that unifies OpenAI-style access to dozens of LLM providers, enabling centralized quota, billing and user management through a single binary or Docker image.
LiteLLM is an open-source LLM gateway and Python SDK that lets developers call more than 100 commercial and open-source models through a single OpenAI-compatible interface, complete with cost tracking, rate-limiting, load-balancing and guardrails.
