Open source repo

What's inside BerriAI/litellm

BerriAI/litellm is a Python repo with 4,405,837 lines written in 5,630 files. litellm is built with Next.js, React, FastAPI, and 2 more and uses Redis, Postgres, OpenAI, and 2 more. AI signed 20% of the 45,956 commits of litellm.

Its description on GitHub: “The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]”

Python62,405

Read on October 30, 2026, at commit ef9385c.

What the card proved: what it’s built with on the left, what it uses on the right.

See each one with its proof

Its folders

In figures

lines written
4,405,837
The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
files
5,630
The product’s, not counting tests.
test files
6,741
The files that test the code.

SeeRepo read its code facts-only: no AI, and none of its code is kept.

Frequently asked questions

What is BerriAI/litellm?
BerriAI/litellm is a Python repo with 4,405,837 lines written in 5,630 files. Its description on GitHub: “The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]”
The proof: its page on GitHub
What is litellm built with?
litellm is built with Next.js, React, FastAPI, and 2 more and uses Redis, Postgres, OpenAI, and 2 more.
The proof: each technology with its file and line
How much of litellm did AI write?
AI signed 20% of the 45,956 commits of litellm.
The proof: the commits each tool signed
How many stars does litellm have on GitHub?
litellm had 62,405 stars on GitHub on October 30, 2026.
The proof: its page on GitHub

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