kitio.aiUltravox vs Hamming
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Ultravox starts at $100/mo and Hamming starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Speech-native model
- Real-time voice agents
- Outbound call scheduler
- Custom voices
- SIP support
- Auto-generated test scenarios
- Production call replay
- Red teaming
- 50+ metrics
- Live monitoring
- Custom scoring templates
| Feature | Ultravox | Hamming |
|---|---|---|
| Best for | Speech-native voice AI platform for real-time voice agents | Testing and monitoring platform for voice and chat agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Paid |
| Starting price | $100/mo | See pricing page |
| Free plan | Yes | No |
| Made by | Ultravox (Inworld) | Hamming |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Ultravox starts at $100/mo and Hamming starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Pay as you go
$0.05 / minute
- 30 free minutes of calls
- Up to 5 concurrent calls
- Unlimited playground calls
Pro
$100/mo
- No hard concurrency caps
- Outbound call scheduler
- 5 custom voices
Enterprise
Custom
- Custom pricing
- Volume rates
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Ultravox
- Skips the speech-to-text step
- 30 free minutes to start
- Unlimited playground calls
- Developer-focused, not a no-code tool
- Pay-as-you-go plan limits concurrent calls to 5
- Now part of Inworld, so the roadmap may shift
Hamming
- Covers testing, red teaming and monitoring
- Failures turn into regression tests
- SOC 2 Type II and HIPAA support
- Prices are not published
- Built for teams with production agents
- Sales contact needed for agency and enterprise tiers
Which one should you choose?
Choose Ultravox if you want:
- Skips the speech-to-text step
- 30 free minutes to start
- Unlimited playground calls
Watch out: developer-focused, not a no-code tool.
Choose Hamming if you want:
- Covers testing, red teaming and monitoring
- Failures turn into regression tests
- SOC 2 Type II and HIPAA support
Watch out: prices are not published.
Ultravox vs Hamming FAQ
What is the difference between Ultravox and Hamming?
Ultravox: Speech-native voice AI platform for real-time voice agents. Hamming: Testing and monitoring platform for voice and chat agents. Both are models & apis tools.
Is Ultravox or Hamming cheaper?
Ultravox starts at $100/mo and Hamming starts at See pricing page. Check both pricing pages for current plans.
Do Ultravox and Hamming have free plans?
Ultravox: Yes. Hamming: No.
Who makes Ultravox?
Ultravox is made by Ultravox (Inworld), based in United States.
Who makes Hamming?
Hamming is made by Hamming.
Which should I choose, Ultravox or Hamming?
Choose Ultravox if you value skips the speech-to-text step and 30 free minutes to start. Choose Hamming if you value covers testing, red teaming and monitoring and failures turn into regression tests.