Source: https://seerepo.com/compare/Arize-ai/phoenix/vs/bytedance/deer-flow Markdown source: https://seerepo.com/compare/Arize-ai/phoenix/vs/bytedance/deer-flow.md Description: 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. # 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. - [Arize-ai/phoenix](https://seerepo.com/r/Arize-ai/phoenix): AI Observability & Evaluation - [bytedance/deer-flow](https://seerepo.com/r/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. ## What they share and what sets them apart - In common: 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, Zod - Only in phoenix: pyarrow, fastmcp-slim, graphql-core, strawberry-graphql, react-relay, React Router, Vite, OpenAI, pydata-sphinx-theme, sphinx-design, sqlglot, openinference-semantic-conventions, pydantic-ai-slim, openinference-instrumentation, linkify-it-py, myst-parser, jinja2, pystache, Pydantic, opentelemetry-semantic-conventions, opentelemetry-api, psutil, @emotion/react, polished, @uiw/codemirror-themes, react-aria-components, React Hook Form, react-aria, TanStack, recharts, react-hotkeys-hook, dnd-kit, json-render, react-stately, @lezer/highlight, @paper-design/shaders-react, D3, react-error-boundary, codemirror-json-schema, react-resizable, @arizeai/openinference-semantic-conventions, @ai-sdk/react, mustache, @hookform/resolvers, @clack/prompts, ink, marked, marked-terminal, OpenTelemetry - Only in deer-flow: langgraph-checkpoint-sqlite, Next.js, pyjwt, cryptography, bcrypt, agent-client-protocol, LangChain, LangGraph, langgraph-checkpoint, langchain-openai, langchain-mcp-adapters, e2b-code-interpreter, langchain-anthropic, langgraph-api, langgraph-sdk, agent-sandbox, exa-py, langchain-deepseek, langchain-openviking, langfuse, html5lib, beautifulsoup4, markdown-to-mrkdwn, email-validator, kubernetes, Tailwind CSS, class-variance-authority, next-themes, nextra-theme-docs, tailwind-merge, uiw, sonner, Radix UI, @tanstack/react-virtual, canvas-confetti, cmdk, embla-carousel-react, GSAP, Headless UI, ogl, Lucide, @radix-ui/react-icons, katex, shiki, papaparse, qrcode.react, rehype-katex, rehype-raw, rehype-sanitize, remark-gfm, remark-math, unist-util-visit ## Side by side | | phoenix | deer-flow | |---|---|---| | Size | 1,011,392 lines written, 3,045 code files | 1,109,533 lines written, 1,508 code files | | Who writes it | 5.4% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, and Factory | 12.5% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, Codex, and Factory | | Activity | Last push November 11, 2026, 10,411 commits, 12,244 stars | Last push November 9, 2026, 4,670 commits, 85,169 stars | | Tests | 1,083 test files. 27.7% of its code files have a test that imports them | 1,997 test files. 73.7% of its code files have a test that imports them | - Size: Lines written by people and agents, without generated ones; code files, without tests. - Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch. - Activity: From GitHub and its history, on the day SeeRepo read it. - Tests: The files that test the code, and the share of code files a test imports. ## 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](https://github.com/bytedance/deer-flow/tree/fb094984e3b6c7ab7f4c141cd6f2c20d4d72e656) ### 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](https://github.com/bytedance/deer-flow) ### 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](https://github.com/bytedance/deer-flow/tree/fb094984e3b6c7ab7f4c141cd6f2c20d4d72e656) ### 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](https://github.com/Arize-ai/phoenix/commits) ### 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](https://seerepo.com/r/bytedance/deer-flow/ai) ## Sources - Arize-ai/phoenix: Read on November 11, 2026, at commit 5a33185 (https://github.com/Arize-ai/phoenix/tree/5a3318534df5aa235221b58e5aa55210001394c2) - bytedance/deer-flow: Read on November 9, 2026, at commit fb09498 (https://github.com/bytedance/deer-flow/tree/fb094984e3b6c7ab7f4c141cd6f2c20d4d72e656) ## 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.