# LiteLLM

LiteLLM is an open-source unified API that provides a single interface for calling 100+ LLM APIs including OpenAI, Anthropic, Gemini, Mistral, and local models, all in the OpenAI format. Developers can switch between providers with a single line change, implement fallbacks and load balancing, track costs across providers, and add rate limiting without changing their application logic. LiteLLM also provides a self-hosted proxy server for teams needing centralized API key management, budget controls, and access logging across their organization.

## Quick facts

- Categories: Developer Tools, LLM
- Pricing: Free
- Free plan: Yes
- Official site: https://litellm.ai
- Last checked: 2026-10-23

## Key features

- 100+ provider unified interface
- Automatic fallback and retry
- Cost tracking across providers
- Rate limiting and budgets
- Self-hosted proxy option

## Use cases

- Multi-provider LLM applications
- Enterprise API key management
- Cost optimization across models
- Reliable AI with failover

## Links

- Nextool.ai page: https://nextool.ai/tools/litellm/
- Alternatives: https://nextool.ai/alternatives/litellm/

Source: Nextool.ai (https://nextool.ai/tools/litellm/). Pricing and features change; confirm on the provider's site before relying on them.