Head to head
Amazon Polly vs Azure AI Speech
As a text-to-speech API, Amazon Polly rates higher on the APIbenchmarks Index, 83.7 to 82.5, a 1.2-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Amazon Polly | Azure AI Speech |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 83.7 | 82.5 |
Specifications
| Amazon Polly | Azure AI Speech | |
|---|---|---|
| Best for | TTS embedded in the AWS stack | Enterprise TTS + custom neural voice |
| Free tier | 5M chars/mo, 12 months (Neural 1M) | 500k chars/mo (F0 tier) |
| Pricing | Per 1M characters | Per 1M characters |
| Official SDKs | 12 languages | 9 languages |
Is Amazon Polly better than Azure AI Speech?
On the APIbenchmarks Index, Amazon Polly rates higher (83.7 vs 82.5). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.