Source: https://seerepo.com/r/Arize-ai/phoenix
Markdown source: https://seerepo.com/r/Arize-ai/phoenix.md
Description: Arize-ai/phoenix is a TypeScript repo with 1,011,392 lines written. AI signed 5.4% of the 10,411 commits of phoenix.

# What's inside Arize-ai/phoenix

Arize-ai/phoenix is a TypeScript repo with 1,011,392 lines written. phoenix is built with FastAPI, starlette, fastmcp-slim, and 7 more and uses SQLite and OpenAI. AI signed 5.4% of the 10,411 commits of phoenix.

Its description on GitHub: “AI Observability & Evaluation”

TypeScript · 12,244 stars · GitHub: https://github.com/Arize-ai/phoenix

Read on November 11, 2026, at commit 5a33185.

## More on this repo

- [What is phoenix built with?](https://seerepo.com/r/Arize-ai/phoenix/built): phoenix is built with FastAPI, starlette, fastmcp-slim, and 7 more and uses SQLite and OpenAI.
- [How much of phoenix did AI write?](https://seerepo.com/r/Arize-ai/phoenix/ai): AI signed 5.4% of the 10,411 commits of phoenix.

## In figures

- 1,011,392 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 3,045 product files: The product’s own files. Test files are counted apart.
- 1,083 test files: The files that test the code.
- 67 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 Arize-ai/phoenix?

Arize-ai/phoenix is a TypeScript repo with 1,011,392 lines written. Its description on GitHub: “AI Observability & Evaluation”

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

### What is phoenix built with?

phoenix is built with FastAPI, starlette, fastmcp-slim, and 7 more and uses SQLite and OpenAI.

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

### How much of phoenix did AI write?

AI signed 5.4% of the 10,411 commits of phoenix.

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

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

phoenix had 12,244 stars on GitHub on November 11, 2026.

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

## Add this badge to your README

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

```markdown
[![Arize-ai/phoenix on SeeRepo](https://seerepo.com/badge/Arize-ai/phoenix.svg)](https://seerepo.com/r/Arize-ai/phoenix?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.