Head to head
Amazon Polly vs Cartesia
As a text-to-speech API, Amazon Polly rates higher on the APIbenchmarks Index, 83.7 to 75.7, a 8-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Amazon Polly | Cartesia |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 83.7 | 75.7 |
Specifications
| Amazon Polly | Cartesia | |
|---|---|---|
| Best for | TTS embedded in the AWS stack | Real-time TTS for voice agents |
| Free tier | 5M chars/mo, 12 months (Neural 1M) | 20k credits (~15-20 min audio) |
| Pricing | Per 1M characters | Per character (credits) |
| Official SDKs | 12 languages | 4 languages |
Is Amazon Polly better than Cartesia?
On the APIbenchmarks Index, Amazon Polly rates higher (83.7 vs 75.7). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.