kitio.aiCartesia Sonic vs TTSLabs
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 $25 for TTSLabs.
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
- 80+ custom voices
- Profanity filtering
- Live alert queue
- Sound clips in messages
- Tips and reward triggers
| Feature | Cartesia Sonic | TTSLabs |
|---|---|---|
| Best for | Low-latency text-to-speech API for voice agents | Text-to-speech alerts for streamers on Twitch and similar platforms |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $5/mo | $25/mo |
| Free plan | Yes | Yes |
| Made by | Cartesia | TTSLabs |
| 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 $25 for TTSLabs.
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
2 plans
Free
Free
- 400 AI voice alerts per month
- 10 enabled voices
- Unlimited classic voice alerts
Pro
$25/mo
- Unlimited AI voice alerts
- Priority processing
- Early access to new voices
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
TTSLabs
- Fast rendering for live use
- Free plan without a credit card
- Queue controls for the streamer
- Free plan has only 400 AI alerts a month
- Built around streaming setups
- Pro costs $25 a month
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 TTSLabs if you want:
- Fast rendering for live use
- Free plan without a credit card
- Queue controls for the streamer
Watch out: free plan has only 400 ai alerts a month.
Cartesia Sonic vs TTSLabs FAQ
What is the difference between Cartesia Sonic and TTSLabs?
Cartesia Sonic: Low-latency text-to-speech API for voice agents. TTSLabs: Text-to-speech alerts for streamers on Twitch and similar platforms. Both are audio & voice tools.
Is Cartesia Sonic or TTSLabs cheaper?
Cartesia Sonic has the lower starting price: about $5 a month, against $25 for TTSLabs.
Do Cartesia Sonic and TTSLabs have free plans?
Cartesia Sonic: Yes. TTSLabs: Yes.
Who makes Cartesia Sonic?
Cartesia Sonic is made by Cartesia, based in United States.
Who makes TTSLabs?
TTSLabs is made by TTSLabs.
Which should I choose, Cartesia Sonic or TTSLabs?
Choose Cartesia Sonic if you value very fast time to first audio and wide language coverage in one model. Choose TTSLabs if you value fast rendering for live use and free plan without a credit card.