WebSocket support is now available for Python Functions
Source
vercel.com
Author
Fantix King
Date
Why it matters
If you build AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → or LLMA large language model — the neural network behind tools like Claude and ChatGPT, trained on huge amounts of text to predict what comes next.Full definition → backends in Python, you can now run bidirectional WebSocket endpoints directly on Vercel Functions with FastAPI/Django/Flask instead of maintaining a separate long-lived server for streamingSending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.Full definition → and chat.
Terms in this piece · Glossary
streaming — Sending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
LLM — A large language model — the neural network behind tools like Claude and ChatGPT, trained on huge amounts of text to predict what comes next.
Key quotes
“Vercel now supports WebSocket connections for Python applications.”
“WebSockets enable bidirectional communication between client- and server-side code, powering real-time features like interactive AI streaming, real-time chat, and multiplayer live collaboration.”
“Both ASGI and WSGI applications are supported, including frameworks like FastAPI, Django, and Flask.”
