Socket.io pricing: plans, free tier & real monthly cost
Full-featured WebSocket library with automatic fallback and room-based messaging
Pricing verified Jul 2026.
Visit Socket.io · Official pricing page
Free tier: Free and open source (MIT license)
Socket.io plans compared
| Plan | Monthly | Billed annually | Limits |
|---|---|---|---|
| Free | Free | — | Open-source realtime library — no cost; you pay for the servers it runs on |
MIT-licensed. Self-hosted on your own infrastructure; scaling horizontally may need a Redis adapter (infra cost, not license cost).
Stacks that use Socket.io
- Add real-time updates — Make your app feel alive. Live updates, collaboration, and instant notifications built in.
Socket.io pricing FAQ
Does Socket.io have a free tier?
Yes. Free and open source (MIT license)
How much does Socket.io cost?
Socket.io is free to use — Free and open source (MIT license).
How up to date is this Socket.io pricing?
We last verified it in Jul 2026 against Socket.io's public pricing page. Tool pricing changes often — always confirm on the official pricing page before committing.