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phoenix vs deer-flow

phoenix and deer-flow share 18 technologies: FastAPI, starlette, aiosqlite, SQLite, uvicorn, React, SQLAlchemy, alembic, jsonschema, CodeMirror, react-resizable-panels, @uiw/react-codemirror, motion, @streamdown/code, use-stick-to-bottom, ai, streamdown, and Zod. phoenix is written in TypeScript and deer-flow in Python.

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What they share and what sets them apart

Arize-ai

phoenix

AI Observability & Evaluation

TypeScript12.2kRead on November 11, 2026, at commit 5a33185What is phoenix built with?

Only in phoenix

In common

bytedance

deer-flow

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

Python85.2kRead on November 9, 2026, at commit fb09498What is deer-flow built with?

Only in deer-flow

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
phoenix1,011,392 lines written3,045 code files
deer-flow1,109,533 lines written1,508 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
phoenix5.4% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, and Factory
deer-flow12.5% of its commits signed by AIWith Claude Code, GitHub Copilot, Cursor, Codex, and Factory
ActivityFrom GitHub and its history, on the day SeeRepo read it.
phoenixLast push November 11, 202610,411 commits12,244 stars
deer-flowLast push November 9, 20264,670 commits85,169 stars
TestsThe files that test the code, and the share of code files a test imports.
phoenix1,083 test files27.7% of its code files have a test that imports them
deer-flow1,997 test files73.7% of its code files have a test that imports them

Frequently asked questions

Which is bigger, phoenix or deer-flow?
deer-flow, with 1,109,533 lines written; phoenix has 1,011,392.

The proof: bytedance/deer-flow's code at commit fb09498

Which has more GitHub stars, phoenix or deer-flow?
deer-flow, with 85,169 stars; phoenix has 12,244.

The proof: bytedance/deer-flow on GitHub

Which has more tests, phoenix or deer-flow?
deer-flow, with 1,997 test files; phoenix has 1,083.

The proof: bytedance/deer-flow's code at commit fb09498

Which was updated more recently, phoenix or deer-flow?
phoenix: its last push was on November 11, 2026, and deer-flow's on November 9, 2026.

The proof: Arize-ai/phoenix's commits on GitHub

Which has more commits signed by AI, phoenix or deer-flow?
deer-flow: an AI signed 12.5% of its commits, with Claude Code, GitHub Copilot, Cursor, Codex, and Factory; in phoenix, 5.4%.

The proof: the commits each tool signed in bytedance/deer-flow

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