Head-to-head · Text-to-Speech Software
Cartesia Sonic vs Speechify
Cartesia Sonic leads on 1 check, Speechify on 0, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreCartesia Sonic · 7.1/10
- Lowest starting priceCartesia Sonic · $5/mo
- Free planboth
Cartesia Sonic scores higher on our rubric for text-to-speech software: 7.1 against 6.8 out of 10; our editors rank them #24 and #27.
Cartesia Sonic is cheaper to start at $5/mo against $29/mo.
Cartesia Sonic is the better fit for low-cost streaming TTS developers. Speechify is the better fit for people reading documents across devices.
- Cartesia Sonic fits best
Low-cost streaming TTS developers
- Speechify fits best
People reading documents across devices
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Side by side
| Feature | Cartesia Sonic 7.1/10 Visit ↗ | Speechify 6.8/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.1 | 6.8 |
| Ranking | #24 in Text-to-Speech Software | #27 in Text-to-Speech Software |
| Best for | Low-cost streaming TTS developers | People reading documents across devices |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | $5/mo (best) | $29/mo |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud, Self-hosted | Cloud, Desktop, Mobile, Browser extension |
| Platforms | Web | Web, Windows, macOS, iOS, Android, Chrome extension |
| Support | Email, Community | Email, Live chat, Docs |
| Built for | Small business, Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Cartesia Sonic 3/3 · Speechify 3/3 | ||
| Commercial use | ✓ | ✓ |
| Voice cloning | ✓ | ✓ |
| API access | ✓ | ✓ |
| Specs | ||
| Languages | Not checked yet | 60 languages |
| Maximum input | Not checked yet | Not checked yet |
| Export formats | Not checked yet | MP3 |
| Platforms | web, api | web, windows, macos, ios, android, chrome_extension |
| Our review | ||
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| Our verdict | Cartesia Sonic is a real-time text-to-speech model for developers building conversational voice applications, narration, dubbing, and voice agents. It generates streaming speech through Cartesia’s API and is also available in a web… Read the review → |
Speechify converts digital text into spoken audio for readers, students, professionals, and people with reading difficulties. It reads PDFs, documents, webpages, books, and uploaded files through web, iOS, Android, macOS, Windows, and… Read the review → |
Strengths and trade-offs
Cartesia Sonic — where it wins
- Free plan includes 20K monthly credits and text-to-speech
- Supports streaming, 44 languages, and voice cloning
- HTTP, SSE, and WebSocket endpoints support API workflows
Where it doesn't
- Verified integrations are limited
- The Free plan is not identified as commercially licensed
- Professional cloning and higher usage require paid tiers
Speechify — where it wins
- Reads PDFs, webpages, books, documents, and scanned printed text
- Works across web, mobile, desktop, Chrome, and API environments
- Premium adds 1,000+ voices, 60+ languages, and cloud-drive integrations
Where it doesn't
- The Free plan is limited to text-to-speech features
- Free listening speeds top out at 1.5x
- Studio and API pricing is separate from the reader subscription
- Cartesia Sonic7.1/10 · Free plan
A low-cost streaming TTS API with cloning, 44 languages, and multiple endpoints.
Visit Cartesia SonicFull verdict → - Speechify6.8/10 · Free plan
A broad reading and speech platform with a capable free tier and $29 monthly Premium plan.
Visit SpeechifyFull verdict →
All Text-to-Speech software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update