kitio.aiCartesia Sonic vs SpeechReader
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 $8 for SpeechReader.
Online text to speech reader with 2,000+ voices and word highlighting
Freemium · $7.99/moAt 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
- 2,000+ AI voices
- 60+ languages
- Word-by-word highlighting
- PDF and photo input
- Audio downloads
| Feature | Cartesia Sonic | SpeechReader |
|---|---|---|
| Best for | Low-latency text-to-speech API for voice agents | Online text to speech reader with 2,000+ voices and word highlighting |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $5/mo | $7.99/mo |
| Free plan | Yes | Yes |
| Made by | Cartesia | SpeechReader |
| 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 $8 for SpeechReader.
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 Demo
Free
- About 5 minutes of audio a day
- Standard voices
Basic
$7.99/mo
- About 2 hours of audio a day
- Audio downloads
- Commercial use
Premium
$15/mo billed yearly
- About 9 hours of audio a day
- Studio 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
SpeechReader
- Huge voice and language choice
- Highlighting keeps your place
- Daily credits refresh
- Free tier is about 5 minutes a day
- PDF upload needs a paid plan
- Studio voices only on Premium
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 SpeechReader if you want:
- Huge voice and language choice
- Highlighting keeps your place
- Daily credits refresh
Watch out: free tier is about 5 minutes a day.
Cartesia Sonic vs SpeechReader FAQ
What is the difference between Cartesia Sonic and SpeechReader?
Cartesia Sonic: Low-latency text-to-speech API for voice agents. SpeechReader: Online text to speech reader with 2,000+ voices and word highlighting. Both are audio & voice tools.
Is Cartesia Sonic or SpeechReader cheaper?
Cartesia Sonic has the lower starting price: about $5 a month, against $8 for SpeechReader.
Do Cartesia Sonic and SpeechReader have free plans?
Cartesia Sonic: Yes. SpeechReader: Yes.
Who makes Cartesia Sonic?
Cartesia Sonic is made by Cartesia, based in United States.
Who makes SpeechReader?
SpeechReader is made by SpeechReader.
Which should I choose, Cartesia Sonic or SpeechReader?
Choose Cartesia Sonic if you value very fast time to first audio and wide language coverage in one model. Choose SpeechReader if you value huge voice and language choice and highlighting keeps your place.