LiteLLM is a unified gateway and proxy server designed to centralize access to over one hundred language model providers. It provides a standardized API interface that abstracts vendor-specific schemas, allowing developers to interact with diverse models through a single, consistent format. By acting as a central traffic management layer, it enables organizations to route, secure, and govern model interactions across multiple deployments.
The platform distinguishes itself through its policy-driven architecture, which uses configuration-based routing to manage traffic distribution, load balancing, and automatic fallbacks without requiring code changes. It incorporates a robust security and compliance layer that enforces content moderation, secret redaction, and fine-grained access control. Additionally, it supports complex operational requirements such as semantic routing, rule-based complexity scoring, and persistent virtual key management for multi-tenant environments.
Beyond core routing, the project provides comprehensive governance and observability tools to monitor usage, track spending, and log request metadata across teams. It includes an integrated software development kit for tool calling and agent orchestration, alongside support for advanced features like response caching, batch processing, and structured output configuration. The system is designed for enterprise-wide deployment, offering features for audit logging, single sign-on integration, and granular cost reporting.
