* **Voice remixing for Gemini 3.8 TTS**: Released
[Voice remixing](/docs/voice-remixing), which lets you modify an existing
prebuilt or [designed](/docs/voice-design) voice using natural-language
instructions to create a new, independent stored voice. Use
`POST /v1beta/voices` with `gemini-3.8-flash-tts` (or remix interactively in
[Google AI Studio](https://aistudio.google.com/generate-speech)) to generate
a `voice_...` ID, then synthesize speech with
[Gemini 3.8 Flash TTS](/docs/models/gemini-3.8-flash-tts) or
[Gemini 3.8 Flash-Lite TTS](/docs/models/gemini-3.8-flash-lite-tts). See the
[Voice remixing guide](/docs/voice-remixing) to get started.