Comparison
Self-host WAHA, or let Flow API run it?
WAHA is a popular open-source WhatsApp HTTP API that you run on your own server. Flow API runs this kind of engine for you and adds the parts businesses need around it.
| Flow API | Self-hosted WAHA | |
|---|---|---|
| Setup | Sign up and scan a QR code | Run a Docker server, configure storage, HTTPS and API keys |
| Upkeep | Updates, restarts and monitoring included | You update, monitor and restart sessions |
| API format | Green API compatible | WAHA's own REST API |
| Extras | Console, chats inbox, billing, n8n/Zapier apps, MCP, webhooks with retries | Engine only |
| Cost | $10 per number per month | Server costs plus your time |
Self-host if
- You have DevOps time and want full control of the server
- Data must stay on your own infrastructure
Use Flow API if
- You want numbers working today, not a server project
- You manage numbers for clients and need a dashboard and billing
Sources: WAHA project site. Checked October 2026.
Try it on your own number
7 days free, no credit card. Then $10 per number per month.