What's inside Arize-ai/
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.
LinkedInphoenixTypeScript
- lines written
- 1,011,392
- product files
- 3,045
- test files
- 1,083
- GitHub stars
- 12,244
Read on November 11, 2026, at commit 5a33185.See each one with its proof
The card says what it's built with. Its whole map opens it up: every part of the code and how it connects to the rest.
How much of phoenix did AI write?
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
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
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
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
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