kitio.aiCartesia Sonic vs Leelo
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 $19 for Leelo.
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
- Multi-voice script studio
- Voice cloning
- Dubbing into other languages
- Sound effects
- Export of finished mixes
- API and MCP access
| Feature | Cartesia Sonic | Leelo |
|---|---|---|
| Best for | Low-latency text-to-speech API for voice agents | Text-to-speech studio with multi-voice scripts and dubbing |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $5/mo | $19/mo |
| Free plan | Yes | Yes |
| Made by | Cartesia | Leelo |
| 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 $19 for Leelo.
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
- 1,000 credits once
- Personal use only
- Files kept 7 days
Starter
$19/mo
- 80,000 credits a month
- Commercial use
- 1 custom voice
Creator
$39/mo
- 200,000 credits a month
- 3 custom voices
- Files kept permanently
Pro
$99/mo
- 600,000 credits a month
- 10 custom voices
- 100 GB storage
Business
$299/mo
- 2,000,000 credits a month
- 30 custom voices
- 500 GB storage
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
Leelo
- Large voice library in many languages
- Handles multi-speaker scripts and mixing
- Unused credit packs last 12 months
- Free credits are granted once, not monthly
- Free plan is for personal use only
- Plan credits do not roll over
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 Leelo if you want:
- Large voice library in many languages
- Handles multi-speaker scripts and mixing
- Unused credit packs last 12 months
Watch out: free credits are granted once, not monthly.
Cartesia Sonic vs Leelo FAQ
What is the difference between Cartesia Sonic and Leelo?
Cartesia Sonic: Low-latency text-to-speech API for voice agents. Leelo: Text-to-speech studio with multi-voice scripts and dubbing. Both are audio & voice tools.
Is Cartesia Sonic or Leelo cheaper?
Cartesia Sonic has the lower starting price: about $5 a month, against $19 for Leelo.
Do Cartesia Sonic and Leelo have free plans?
Cartesia Sonic: Yes. Leelo: Yes.
Who makes Cartesia Sonic?
Cartesia Sonic is made by Cartesia, based in United States.
Who makes Leelo?
Leelo is made by Leelo.
Which should I choose, Cartesia Sonic or Leelo?
Choose Cartesia Sonic if you value very fast time to first audio and wide language coverage in one model. Choose Leelo if you value large voice library in many languages and handles multi-speaker scripts and mixing.