One language. Full stack
Build your entire app in Python—frontend and backend.
It's just Python
Your state is a Python class. Your event handlers are Python functions. If you know Python, you already know how to use Reflex. Easy to write, easy to understand.
Built on a battle-tested stack
You write Python. Under the hood, Reflex compiles to a React frontend and a Starlette backend—the ASGI server that powers FastAPI. We didn't reinvent the web stack. We made it accessible to every Python developer.
Your ecosystem, your libraries
pandas, SQLAlchemy, scikit-learn, your own internal libraries—whatever Python you already have, it works inside Reflex. No wrappers, no adapters.
Production-grade. No ceiling
Anything you can build in React, you can build in Reflex. This isn't a prototype tool.
Real app features, built in
Routing, authentication, database management, background jobs, file uploads, API endpoints, shared state. Everything you need for production apps, not prototypes.
Entire React ecosystem in Python
60+ built-in components out of the box. Need something else? Wrap any React library with a few lines of Python. Ag-Grid, Plotly, Framer Motion, or your own internal component library. Companies like Man Group and Walmart have wrapped their own internal libraries for their teams. You'll never hit a wall.
No page reloads. No callback mess
Reflex uses reactive state management. Your app updates instantly without re-rendering the entire page. If you've ever fought with page reloads or nested callbacks in other Python frameworks, that doesn't exist here.
Optimized for AI
The best framework for AI agents to build with—and for AI agents to operate.
AI agents build better apps on Reflex
Reflex is purpose-built for the agentic coding era. Our MCP integration means Claude Code, Cursor, and other AI tools produce higher quality apps—fewer tokens, fewer errors, better output. Pre-vetted abstractions mean the AI doesn't reinvent auth or database connections from scratch each time.
Every app is an MCP
Every Reflex app exposes an MCP by default, so agents can use it efficiently. Any action a user can take through the UI, an agent can take via API. No browser automation, no screen scraping.
—“Reflex definitely saved us from needing to hire a frontend engineer and sped us up by 4x relative to learning React.”
Misha van BeekCo-founder, Bayesline
Open source. Apache 2.0 license.
View the source code, contribute, self-host
AlexOpenSea Co-founder
