liteLLM

LiteLLM is a developer tool that acts as a universal bridge between your applications and over 100 different large language models from providers like OpenAI, Anthropic, Google Gemini, Azure, and AWS Bedrock. It standardizes all these different APIs into a single OpenAI-compatible format, meaning developers can switch between models without rewriting their code. The tool handles all the underlying API differences and formatting requirements automatically.

What makes LiteLLM stand out is its comprehensive management features beyond just API unification. It provides detailed spend tracking across all model providers, automatic fallbacks when models are unavailable, rate limiting, and budget enforcement. The platform offers virtual keys for team management, prompt formatting support for open-source models, and extensive logging options to S3 buckets or observability platforms like Langfuse and Langsmith.

This tool primarily benefits platform engineering teams and companies building AI-powered applications that need to manage multiple LLM providers efficiently. Real-world use cases include giving development teams immediate access to new models as they're released, accurately charging internal teams for their AI usage, maintaining application reliability through automatic fallbacks, and simplifying compliance with enterprise authentication requirements like JWT and SSO.