kitio.aiCartesia Sonic vs Unmixr
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Cartesia Sonic has the lower starting price: about $5 a month, against $9 for Unmixr.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Real-time speech under 90ms
- 44 languages
- Instant voice cloning
- Emotion and laughter control
- Voice localisation
- Slides to narrated video
- AI voices in 100+ languages
- Dubbing and localization
- Voice cloning and design
- Transcripts and subtitles
- SCORM output
| Feature | Cartesia Sonic | Unmixr |
|---|---|---|
| Best for | Low-latency text-to-speech API for voice agents | AI voiceovers, dubbing and narrated training videos from slides |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $5/mo | $9/mo |
| Free plan | Yes | Yes |
| Made by | Cartesia | Unmixr |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Cartesia Sonic has the lower starting price: about $5 a month, against $9 for Unmixr.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Free
Free
- 20K credits per month
- Text to speech and speech to text
- $1 of prepaid voice agent usage
Pro
$5/mo
- 100K credits per month
- Commercial use license
- Instant voice cloning
Startup
$49/mo
- 1.25M credits per month
- Professional voice cloning
- $49 of prepaid agent usage
Scale
$299/mo
- 8M credits per month
- Priority support
- High concurrency limits
Enterprise
Contact sales
- Custom credits and volume pricing
- SSO and DPAs
- Shared Slack channel
5 plans
Free
Free
- Limited credits
- Blog to video preview
Lite
$9/mo
- 100K credits per month
- Audio exports only
- 7 transcription hours
Starter
$19/mo
- 500K credits per month
- Video workflows
- 260 dubbing minutes
Pro
$49/mo
- 2.6M credits per month
- Pro templates and uploads
- Priority support
Business
$99/mo
- 6.5M credits per month
- Built for API pipelines
- 3,385 dubbing minutes
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
Cartesia Sonic
- Very fast time to first audio
- Wide language coverage in one model
- Cloning from ten seconds of audio
- Aimed at developers more than casual users
- Credit system takes a while to understand
- Commercial license needs a paid plan
Unmixr
- Many voice and video tools on one credit balance
- Course-focused with SCORM export
- Free plan and 7-day trial of paid plans
- Credits are consumed at different rates per task
- Video workflows start on the Starter plan
- Priority support is not on the lower plans
Which one should you choose?
Choose Cartesia Sonic if you want:
- Very fast time to first audio
- Wide language coverage in one model
- Cloning from ten seconds of audio
Watch out: aimed at developers more than casual users.
Choose Unmixr if you want:
- Many voice and video tools on one credit balance
- Course-focused with SCORM export
- Free plan and 7-day trial of paid plans
Watch out: credits are consumed at different rates per task.
Cartesia Sonic vs Unmixr FAQ
What is the difference between Cartesia Sonic and Unmixr?
Cartesia Sonic: Low-latency text-to-speech API for voice agents. Unmixr: AI voiceovers, dubbing and narrated training videos from slides. Both are audio & voice tools.
Is Cartesia Sonic or Unmixr cheaper?
Cartesia Sonic has the lower starting price: about $5 a month, against $9 for Unmixr.
Do Cartesia Sonic and Unmixr have free plans?
Cartesia Sonic: Yes. Unmixr: Yes.
Who makes Cartesia Sonic?
Cartesia Sonic is made by Cartesia, based in United States.
Who makes Unmixr?
Unmixr is made by Unmixr.
Which should I choose, Cartesia Sonic or Unmixr?
Choose Cartesia Sonic if you value very fast time to first audio and wide language coverage in one model. Choose Unmixr if you value many voice and video tools on one credit balance and course-focused with scorm export.