Question 1

What Is LiteLLM?

Accepted Answer

LiteLLM is an open-source Python library and proxy server that provides a unified OpenAI-compatible API for 100+ language models — including Claude, Llama, Gemini, Mistral, and Groq. It handles model routing, cost tracking, rate limiting, and fallback logic so your application does not need to change when you switch providers. Used by teams building provider-agnostic LLM applications that need to hedge against pricing changes or model deprecations.

Question 2

How to Route Claude Through LiteLLM

Accepted Answer

Install: pip install litellm. Set your key: export ANTHROPIC_API_KEY=sk-ant-.... Call Claude: litellm.completion(model='claude-3-5-sonnet-20241022', messages=[...]). Switch providers by changing the model string — no other code changes needed. Add fallbacks: litellm.completion(model='claude-3-5-sonnet', fallbacks=['gpt-4o'])

Question 3

Which LLM Providers Does LiteLLM Support?

Accepted Answer

LiteLLM supports 100+ providers including OpenAI, Anthropic (Claude), Google Gemini, Cohere, Azure OpenAI, Mistral, Groq, Ollama, and any OpenAI-compatible endpoint. You switch providers by changing the model string — no SDK rewrites required. It also supports local models via Ollama for fully offline inference.