LiteLLM: Unified Access to 100+ LLMs with Advanced Management Features

LiteLLM is a powerful, open-source LLM Gateway designed to streamline model access, cost tracking, and observability across more than 100 large language models in the OpenAI format. Built by a vibrant community of over 425 contributors and backed by Y Combinator, LiteLLM empowers developers, teams, and enterprises to efficiently manage AI workloads with robust tools like virtual keys, rate limiting, prompt management, S3 logging, and real-time budgets. Its proven reliability—over 1 billion requests served with 80% uptime—makes it a trusted solution for companies like Netflix, Lemonade, and RocketMoney. With seamless integration across top providers including Azure, Gemini, Bedrock, OpenAI, and Anthropic, LiteLLM delivers flexibility, scalability, and enterprise-grade security through both open-source and fully managed cloud or self-hosted options.

Key Features:

• Model Access across 100+ LLM providers in OpenAI format
• Fallback routing for uninterrupted service
• Cost and spend tracking with budget alerts
• Batch API support for efficient processing
• LLM Observability with detailed analytics
• Rate limiting and RPM/TPM controls
• Prompt management and versioning
• S3 logging for audit and debugging
• Pass-through endpoints for custom workflows
• Virtual keys for secure API key management
• Integration with Langfuse, Langsmith, and OpenTelemetry for enhanced monitoring
• Load balancing across models and providers
• Enterprise-grade security: JWT authentication, SSO, audit logs
• Custom SLAs and dedicated support for enterprise users
• Cloud or self-hosted deployment options

Pricing: LiteLLM offers a completely Free Open Source version with full access to all features and integrations. For advanced enterprise needs, a paid Enterprise version is available with premium support, custom SLAs, and enhanced security features.

Conclusion: LiteLLM is an essential tool for developers and organizations seeking seamless, scalable, and cost-effective access to diverse LLMs—combining open-source transparency with enterprise readiness in a high-performance, battle-tested platform.