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Open Source AI Integration Platforms using OpenAPI

A curated collection of the best open source using OpenAPI.

LiteLLM

LLM gateway for auth, load balancing, and spend tracking

Stars
50,292
Forks
8,862
Last commit
8 hours ago

Acts as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.

Open Source Alternative to:

LangChain

Arize Phoenix

Open-source LLM tracing & evaluation for AI optimization

Stars
10,127
Forks
921
Last commit
11 hours ago

Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.

Open Source Alternative to:

LangSmith

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