Side by side
Amazon Polly vs KittenTTS
Both stand on text-to-speech software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Amazon Polly offers several voice categories, access methods, and export formats, with a free tier alongside monthly paid plans. Buyers should compare the included request types and character allowances for the voice category they need.
Visit Amazon Polly Free plan AndroidAPIiPhone+5
KittenTTS combines local and hosted speech options with voice cloning and a broad listed voice and language set. Check the model-weight terms and plan usage limits, and split long scripts into sentence-aware chunks.
Visit KittenTTSThe facts
| Amazon Polly | KittenTTS | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | Android, API, iPhone, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Standard: $4 a month | Pro: $14.99 a month |
| Plans published | 5 | 3 |
| Maker | Amazon Polly | Not published |
| Website | aws.amazon.com | github.com |
| On text-to-speech software | #27 of 223 | #31 of 223 |
Amazon Polly: what it does well
- Offers both API and web access.
- Lists 42 languages and voice cloning.
- Exports six listed audio formats.
- Free tier includes several voice categories.
What to know first
- Monthly charges vary by voice category.
- Free-tier allowances expire after 12 months for three categories.
KittenTTS: what it does well
- KittenTTS 2 supports voice cloning from short audio samples.
- README lists 47 voices and 20 languages.
- Hosted API includes speech, cloning, and transcription endpoints.
- Self-hosting is available, including on-premises and on-device.
- Free plan includes 30 free minutes of speech and transcription.
What to know first
- Long scripts can truncate or repeat when processed in one pass.
- Emotion control is beta and varies by voice and sentence.
- Model weights use separate licensing terms from the code.
- Free plan has usage rates after 30 free minutes.
Alternatives to Amazon Polly Alternatives to KittenTTS The whole list