LiteLLM
Open-source gateway that unifies 140+ LLM providers behind a single OpenAI‑compatible API
Best for
Platform teams needing unified LLM access and governance
Skip if
Teams unwilling to manage self‑hosted infrastructure
What is LiteLLM?
LiteLLM is an open‑source AI gateway and LLM proxy that lets platform teams expose a single, OpenAI‑compatible endpoint for over 1,800 models from 140+ providers. It centralizes authentication, key management, SSO, budgeting, guardrails, and cost tracking, simplifying governance and compliance across diverse AI services. Designed for engineering organizations, LiteLLM offers routing, optimization, and observability features that help control usage, reduce spend, and enforce policy while providing a consistent developer experience across the entire model ecosystem.
SpecificationsAI-estimated
Key Features of LiteLLM
Use Cases for LiteLLM
Enterprise Model Governance
Enforce compliance, budgets, and access controls across all AI models used by the organization.
Multi‑Provider Cost Optimization
Automatically route requests to the cheapest provider that meets latency and quality requirements.
Developer Sandbox
Give internal teams a unified API to experiment with any LLM without managing individual credentials.
MCP Integration Layer
Standardize communication between micro‑AI services and downstream applications via a single gateway.
Pros & Cons of LiteLLM
Pros
- Single unified API reduces integration complexity
- Extensive provider coverage and model catalog
- Open source with active community contributions
- Built‑in cost and usage governance tools
Cons
- Self‑hosting requires operational overhead
- Advanced guardrail configuration can be complex
- Enterprise‑grade support may require paid plan
Frequently Asked Questions
Is LiteLLM free to use?
The core gateway is open source and free; optional paid plans provide hosted SaaS, premium support, and advanced features.
Which LLM providers are supported?
LiteLLM supports over 140 providers, covering more than 1,800 models, including OpenAI, Anthropic, Cohere, Azure, and many hosted APIs.
Can I enforce usage budgets?
Yes, LiteLLM includes per‑user and per‑project budgeting with real‑time alerts and automatic throttling when limits are reached.
How is authentication handled?
LiteLLM integrates with SSO providers and stores API keys centrally, allowing role‑based access and audit logging.
Pricing Overview
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