LLM Gateway is an open-source API gateway for Large Language Models (LLMs). It acts as a middleware between your applications and various LLM providers, allowing you to: - Route requests to multiple LLM providers (OpenAI, Anthropic, Google AI Studio, and others) - Manage API keys for different providers in one place - Track token usage and costs across all your LLM interactions - Analyze performance metrics to optimize your LLM usage