What is phoenix built with?

Q: Which repos have a stack like phoenix's?

The ones that share most of its stack: Significant-Gravitas/AutoGPT, bytedance/deer-flow, and CherryHQ/cherry-studio.

phoenix is a TypeScript repo built with FastAPI, starlette, fastmcp-slim, graphql-core, strawberry-graphql, and 5 more. It stores its data in SQLite, reaches it with SQLAlchemy, sqlglot, and alembic, uses AI through openinference-semantic-conventions, pydantic-ai-slim, openinference-instrumentation, ai, @arizeai/openinference-semantic-conventions, and 2 more, makes its content with linkify-it-py, myst-parser, jinja2, pystache, streamdown, and 3 more, validates its data with Pydantic, jsonschema, Zod, and @hookform/resolvers, is tested with Vitest, @playwright/test, vitest-canvas-mock, ink-testing-library, OpenTelemetry, and 1 more, deploys with opentelemetry-semantic-conventions, opentelemetry-api, and psutil, and uses aiosqlite and pyarrow. It has 1,011,392 written lines, with 1,083 test files.

Read on November 11, 2026, at commit 5a33185. Read it as markdown

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.

Frontend

Styles 5

@emotion/react515 files
polished4 files
@uiw/codemirror-themes1 file
pydata-sphinx-theme
sphinx-design

The base 4

React809 files · in js/app/package.json
react-relay356 files
React Router165 files
Vite1 file · in js/app/package.json

Interface 23

react-aria-components152 files
React Hook Form55 files
react-aria54 files
TanStack45 files
recharts32 files
CodeMirror29 files
react-resizable-panels27 files
@uiw/react-codemirror15 files
dnd-kit6 files
motion6 files
react-stately4 files
@clack/prompts3 files

11 more

ink3 files
D32 files
react-error-boundary2 files
react-hotkeys-hook16 files
json-render4 files
@lezer/highlight3 files
@paper-design/shaders-react2 files
@streamdown/code1 file
codemirror-json-schema1 file
react-resizable1 file
use-stick-to-bottom1 file

Backend

The base 2

FastAPI42 files
starlette39 files

Data 3

pyarrow5 files
SQLite2 files · src/phoenix/db/engines.py, line 11
aiosqlite

Data access 3

SQLAlchemy222 files
sqlglot4 files
alembic1 file

AI 6

ai38 files
@ai-sdk/react7 files
pydantic-ai-slim
@arizeai/openinference-semantic-conventions15 files
openinference-instrumentation15 files
openinference-semantic-conventions

Services 1

OpenAI1 file · js/app/src/components/generative/serverLanguageModel.ts, line 45

Support

The base 4

uvicorn2 files
fastmcp-slim
strawberry-graphql
graphql-core

Content 8

jinja26 files
marked1 file
myst-parser
streamdown2 files
marked-terminal1 file
mustache1 file
pystache1 file
linkify-it-py

Validation 4

Zod131 files
Pydantic93 files
@hookform/resolvers1 file
jsonschema1 file

Testing 6

Vitest325 files
@playwright/test35 files
msw3 files
OpenTelemetry2 files
ink-testing-library1 file
vitest-canvas-mock1 file

Deploy 4

opentelemetry-api7 files
OpenTelemetry4 files
psutil2 files
opentelemetry-semantic-conventions

Tools 6

Storybook1 file
Sphinx
typing-extensions215 files
commander22 files
ignore1 file
sphinx-autosummary-accessors

Other 36

Relay40 files
pandas29 files
zustand26 files
Lodash23 files
@internationalized/date15 files
NumPy15 files
date-fns9 files
OpenTelemetry8 files
httpx27 files
wrapt5 files
openapi-fetch4 files
opentelemetry4 files

24 more

d3-format2 files
jsonpath-ng2 files
pyyaml2 files
tqdm2 files
@apollo/client1 file
@opentelemetry/api1 file
async1 file
certifi
tiny-invariant99 files
httpx14 files
cachetools10 files
aioitertools9 files
copy-to-clipboard7 files
@pierre/diffs4 files
grpcio3 files
clsx2 files
cron-parser2 files
requests2 files
@lezer/lr1 file
cronstrue1 file
cross-spawn1 file
pypistats
python-multipart
s

Other repos with a similar stack

Ordered by how much of its stack they share with phoenix, then by stars.

Significant-GravitasAutoGPT
188k
AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.
19 of 113 in common · PythonCompare →
bytedancedeer-flow
85.2k
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.
18 of 113 in common · PythonCompare →
CherryHQcherry-studio
53.4k
Your AI workspace for models, agents, and productivity.
18 of 113 in commonCompare →
supabasesupabase
114.7k
The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
17 of 113 in commonCompare →
apachesuperset
75.5k
Apache Superset is a Data Visualization and Data Exploration Platform
17 of 113 in common · PythonCompare →
apacheairflow
47.4k
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
17 of 113 in common · PythonCompare →

Frequently asked questions

What language is phoenix written in?

phoenix is written in TypeScript, with 1,011,392 written lines.

What framework does phoenix use?

phoenix is built with FastAPI, starlette, fastmcp-slim, graphql-core, strawberry-graphql, uvicorn, React, react-relay, React Router, and Vite.

What database does phoenix use?

phoenix stores its data in SQLite and reaches it with SQLAlchemy, sqlglot, and alembic.

The proof: src/phoenix/db/engines.py, line 11

Does phoenix use AI?

Yes. phoenix uses AI through openinference-semantic-conventions, pydantic-ai-slim, openinference-instrumentation, ai, @arizeai/openinference-semantic-conventions, @ai-sdk/react, and OpenAI.

What services does phoenix use?

phoenix uses aiosqlite and pyarrow.

Does phoenix have tests?

Yes. phoenix has 1,083 test files and is tested with Vitest, @playwright/test, vitest-canvas-mock, ink-testing-library, OpenTelemetry, and msw.

Which repos have a stack like phoenix's?

The ones that share most of its stack:Significant-Gravitas/AutoGPT bytedance/deer-flow CherryHQ/cherry-studio