Is Seeduplex Free?
Yes. Seeduplex is free to use via the Doubao app with no credit card required.
What's Free
Via Doubao app:
- Unlimited voice conversations
- Full-duplex mode enabled
- Noise suppression active
- Available globally (iOS and Android)
Via this site (Try Seeduplex):
- Demo experience with sample interactions
- No signup required
What Costs Money
The Seed API — for developers building applications with Seeduplex — has a usage-based pricing model:
| Tier | Minutes | Price |
|---|---|---|
| Free | 100 min/month | $0 |
| Pro | Pay-as-you-go | ~$0.008/min |
| Enterprise | Custom | Contact sales |
For comparison, OpenAI's Realtime API costs approximately 7–8x more per minute.
How to Get Started Free
- **Fastest:** [Doubao app](https://www.doubao.com) → voice call → full-duplex enabled by default
- **Developer preview:** Apply for Seed API access at seed.bytedance.com
- **Quick demo:** [Try it here](/try) in your browser
Frequently Asked Questions
Will the free tier stay free? ByteDance's pattern with Doubao suggests consumer access will remain free. API pricing may change as the product matures.
Is there a usage limit on Doubao? Not currently announced. Consumer access appears unlimited.
Can I use Seeduplex for commercial applications? Via the Seed API, yes. Consumer use via Doubao is for personal use.