LiteLLM -Open-Source Library for Anthropic,Azure,OpenAI, etc. API Calls

What it does

LiteLLM is the open-source AI gateway that puts your full AI stack behind one OpenAI-compatible key. Track and cap LLM spend, route to the right model, and self-host anywhere — even air-gapped. 140+ providers, 1,892 models.

“LiteLLM gives NVIDIA engineers a single, consistent way to access more than 100 AI model endpoints .” “LiteLLM streamlines the complexities of managing multiple LLM models.” “LiteLLM has let my team provide the latest LLM models to our users, usually within a day of them being released… it has saved us months of work .” “If we decide to switch the backend model, it’s a simple configuration update in the gateway; no code changes, procurement cycles, or repetitive security reviews required.” “After the company began using router provider LiteLLM, the costs of some advanced AI tasks such as coding fell by as much as 56% .” Put every model, agent, and MCP behind one API and one login. We…from litellm.ai

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  liteLLM2023 · litellm.ai · ▲120

  One library to standardize all LLM APIs

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  Litellm – Simple library to standardize OpenAI, Cohere, Azure LLM I/O2023 · github.com · ▲62

  I built this library because langchain was too bloated and I needed a simple abstraction to call multiple LLM APIs. litellm has two functions - completion(), embedding()

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  liteLLM Proxy Server: 50+ LLM Models, Error Handling, Caching2023 · github.com · ▲140

  Hello hacker news, I’m the maintainer of liteLLM() - package to simplify input/output to OpenAI, Azure, Cohere, Anthropic, Hugging face API Endpoints: https://github.com/BerriAI/litellm/ We’re open sourcing our implementation of liteLLM proxy: https://github.com/BerriAI/litellm/blob/main/cookbook/proxy-... TLDR: It has one API endpoint /chat/completions and standardizes input/output for 50+ LLM models + handles logging, error tracking, caching, streaming What can liteLLM proxy do? - It’s a central place to…

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  LLM Gateway2025 · llmgateway.io · ▲296

  I built an OpenAI-compatible LLM gateway that routes requests to OpenAI, Anthropic, Ollama, vLLM, llama-server, SGLang... anything that speaks /v1/chat/completions. Single Go binary, one YAML config file, no infrastructure. It does the things you'd expect from this kind of gateway... semantic routing via a three-layer cascade (keyword heuristics, embedding similarity, LLM classifier) that picks the best model when clients omit the model field, weighted round-robin load balancing across local inference servers with health checks and failover. The part I think is most…

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  A fully open-source (Apache 2.0)implementation of llama2023 · github.com · ▲158

  We believe that AI should be fully open source and part of the collective knowledge. The original LLaMA code is GPL licensed which means any project using it must also be released under GPL. This "taints" any other code and prevents meaningful academic and commercial use. Lit-LLaMA solves that for good.

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  Any-LLM – Lightweight router to access any LLM Provider2025 · github.com · ▲125

  We built any-llm because we needed a lightweight router for LLM providers with minimal overhead. Switching between models is just a string change : update "openai/gpt-4" to "anthropic/claude-3" and you're done. It uses official provider SDKs when available, which helps since providers handle their own compatibility updates. No proxy or gateway service needed either, so getting started is pretty straightforward - just pip install and import. Currently supports 20+ providers including OpenAI, Anthropic, Google, Mistral, and AWS Bedrock. Would love to hear what you think!

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  AI · 2023 · github.com