kitio.aiCartesia Sonic vs Speechable
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 $10 for Speechable.
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
- Document to audio
- Podcast-style conversations
- AI summaries
- Chat with documents
- Handwritten note support
| Feature | Cartesia Sonic | Speechable |
|---|---|---|
| Best for | Low-latency text-to-speech API for voice agents | Turns PDFs, EPUBs and notes into audio, podcasts and summaries |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $5/mo | $7 one-time |
| Free plan | Yes | Yes |
| Made by | Cartesia | Speechable |
| Based in | United States | Japan |
| 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 $10 for Speechable.
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
- 10 documents
- Unlimited playback
- 10 credits a month
Credit Pack
$7 one-time
- 500 credits
- Never expires
Premium
$10/mo
- Unlimited documents
- 1,200 credits a month
- Priority support
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
Speechable
- Unlimited playback even on free
- Works with EPUB and handwriting
- Accessibility discount available
- Eco mode needs a modern desktop browser
- Free plan capped at 10 documents
- Cloud voices use credits
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 Speechable if you want:
- Unlimited playback even on free
- Works with EPUB and handwriting
- Accessibility discount available
Watch out: eco mode needs a modern desktop browser.
Cartesia Sonic vs Speechable FAQ
What is the difference between Cartesia Sonic and Speechable?
Cartesia Sonic: Low-latency text-to-speech API for voice agents. Speechable: Turns PDFs, EPUBs and notes into audio, podcasts and summaries. Both are audio & voice tools.
Is Cartesia Sonic or Speechable cheaper?
Cartesia Sonic has the lower starting price: about $5 a month, against $10 for Speechable.
Do Cartesia Sonic and Speechable have free plans?
Cartesia Sonic: Yes. Speechable: Yes.
Who makes Cartesia Sonic?
Cartesia Sonic is made by Cartesia, based in United States.
Who makes Speechable?
Speechable is made by Speechable, based in Japan.
Which should I choose, Cartesia Sonic or Speechable?
Choose Cartesia Sonic if you value very fast time to first audio and wide language coverage in one model. Choose Speechable if you value unlimited playback even on free and works with epub and handwriting.