GoogleGemini TTS
Gemini 3.8 Flash TTS
Gemini 3.8 Flash TTS converts text to speech with a focus on expressive delivery and speaker consistency.
What the release provides
The documentation lists 130 languages. Input text is a verbatim transcript: sustained style and speaker directions belong in speech_metadata. Voice design, replication and remixing use the same voice system.Gemini 3.8 Flash TTS official API documentation
How to use it well
Practical guidance. Keep the spoken transcript separate from performance instructions. Listen for names, numbers, abbreviations and speaker changes in complete passages. Store the selected voice identifier with the content configuration so a revised script does not silently change its speaker.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API |
| Model identifiers | gemini-3.8-flash-tts |