Source: https://seerepo.com/r/langchain-ai/langchain
Markdown source: https://seerepo.com/r/langchain-ai/langchain.md
Description: langchain-ai/langchain is a Python repo with 426,036 lines written in 1,654 files. langchain is built with AIOHTTP and uses OpenAI.

# What's inside langchain-ai/langchain

langchain-ai/langchain is a Python repo with 426,036 lines written in 1,654 files. langchain is built with AIOHTTP and uses OpenAI. AI signed 0.3% of the 17,017 commits of langchain.

Its description on GitHub: “The agent engineering platform.”

Python · MIT · 148,995 stars · GitHub: https://github.com/langchain-ai/langchain

Read on November 4, 2026, at commit aa2528f.

## More on this repo

- [What is langchain built with?](https://seerepo.com/r/langchain-ai/langchain/built): langchain is built with AIOHTTP and uses OpenAI.
- [How much of langchain did AI write?](https://seerepo.com/r/langchain-ai/langchain/ai): AI signed 0.3% of the 17,017 commits of langchain.

## In figures

- 426,036 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 1,654 files: The product’s, not counting tests.
- 895 test files: The files that test the code.
- 15 technologies: Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

## Frequently asked questions

### What is langchain-ai/langchain?

langchain-ai/langchain is a Python repo with 426,036 lines written in 1,654 files. Its description on GitHub: “The agent engineering platform.”

The proof: [its page on GitHub](https://github.com/langchain-ai/langchain)

### What is langchain built with?

langchain is built with AIOHTTP and uses OpenAI.

The proof: [each service with its file and line](https://seerepo.com/r/langchain-ai/langchain/built)

### How much of langchain did AI write?

AI signed 0.3% of the 17,017 commits of langchain.

The proof: [the commits each tool signed](https://seerepo.com/r/langchain-ai/langchain/ai)

### What license does langchain have?

langchain is released under the MIT license.

The proof: [its page on GitHub](https://github.com/langchain-ai/langchain)

### How many stars does langchain have on GitHub?

langchain had 148,995 stars on GitHub on November 4, 2026.

The proof: [its page on GitHub](https://github.com/langchain-ai/langchain)

## Add this badge to your README

It links to this page and updates itself each time SeeRepo reads the repo.

```markdown
[![langchain-ai/langchain on SeeRepo](https://seerepo.com/badge/langchain-ai/langchain.svg)](https://seerepo.com/r/langchain-ai/langchain?de=insignia)
```

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.