kitio.aiCartesia Sonic vs Audeus
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Cartesia Sonic starts at $5/mo and Audeus 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
- Real-time speech under 90ms
- 44 languages
- Instant voice cloning
- Emotion and laughter control
- Voice localisation
- PDF, Word and ePub reading
- Word-by-word highlighting
- Natural AI voices
- Browser extensions
- Canva integration
- iOS and Android apps
| Feature | Cartesia Sonic | Audeus |
|---|---|---|
| Best for | Low-latency text-to-speech API for voice agents | Text-to-speech reader for PDFs, Word docs, ePubs and web pages |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $5/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Cartesia | Audeus |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Cartesia Sonic starts at $5/mo and Audeus starts at See pricing page. Check both pricing pages for current plans.
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
3 plans
Free
Free
- Standard voices
- Limited document uploads
- Free browser extension
Pro
$9.92/mo billed annually
- High-quality voices
- Up to 3.5x speed
- Canva integration
Enterprise
Contact sales
- Volume pricing
- Advanced user management
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
Audeus
- Wide range of document types
- Apps on every major platform
- Free tier to try
- Best voices limited on the free plan
- Listed Pro price assumes annual billing
- Voice choice mostly English
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 Audeus if you want:
- Wide range of document types
- Apps on every major platform
- Free tier to try
Watch out: best voices limited on the free plan.
Cartesia Sonic vs Audeus FAQ
What is the difference between Cartesia Sonic and Audeus?
Cartesia Sonic: Low-latency text-to-speech API for voice agents. Audeus: Text-to-speech reader for PDFs, Word docs, ePubs and web pages. Both are audio & voice tools.
Is Cartesia Sonic or Audeus cheaper?
Cartesia Sonic starts at $5/mo and Audeus starts at See pricing page. Check both pricing pages for current plans.
Do Cartesia Sonic and Audeus have free plans?
Cartesia Sonic: Yes. Audeus: Yes.
Who makes Cartesia Sonic?
Cartesia Sonic is made by Cartesia, based in United States.
Who makes Audeus?
Audeus is made by Audeus.
Which should I choose, Cartesia Sonic or Audeus?
Choose Cartesia Sonic if you value very fast time to first audio and wide language coverage in one model. Choose Audeus if you value wide range of document types and apps on every major platform.