Both Nova and Shimmer are positive voices, but with different intensities. Nova is brightly enthusiastic. Shimmer is gently warm. Choose Nova for public-facing energy and Shimmer for private, personal moments.
All samples use the high-quality tts-1-hd model at 1x speed.
| Characteristic | Nova | Shimmer |
|---|---|---|
| Style | Bright | Soft |
| Description | Upbeat without overdoing it. Works for apps, tutorials, and customer-facing use. | Most intimate tone. Suited for personal content and quiet moments. |
| Best Use Cases |
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Nova is upbeat. Shimmer is soft and personal.
The best way to make your decision is to test both voices with your actual content. Listen to the audio samples above with headphones, and consider generating test clips with your own scripts. Small differences in delivery can have significant impacts on user experience, so investing time in testing upfront will pay dividends.