Both Coral and Onyx project confidence, but in different ways. Coral is confidently professional and measured. Onyx is confidently bold and commanding. Choose Coral for sustained professional content and Onyx for high-impact moments.
All samples use the high-quality tts-1-hd model at 1x speed.
| Characteristic | Coral | Onyx |
|---|---|---|
| Style | Clear | Bold |
| Description | Clean and polished. Suited for business, education, and formal content. | Strong presence. Good for announcements and high-impact messaging. |
| Best Use Cases |
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Both are confident. Coral is polished while Onyx is more powerful.
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.