
Gemini 2.5 Pro TTS API by Google
Gemini text-to-speech (Pro): studio-quality, expressive speech from text with 30 prebuilt voices and natural-language style control. Powered by gemini-2.5-pro-preview-tts.
Gemini 2.5 Pro TTS
Studio-quality, expressive text-to-speech powered by Google's gemini-2.5-pro-preview-tts.
Highlights
- 30 prebuilt voices — Kore, Puck, Charon, Aoede, Fenrir, Leda, Orus, Zephyr, and more.
- Style prompting — steer tone, pace and emotion in natural language inside
text, e.g. "Say cheerfully: ..." or "Read slowly and calmly: ...". - Output is a WAV file (24 kHz PCM); billed per 1k characters.
Parameters
| field | required | notes |
|---|---|---|
text | yes | text to synthesize (may embed a style instruction), ≤10000 chars |
voice_name | no | prebuilt voice, default Kore |
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