Gemini 3.1 Flash TTS

AudioStandard

Gemini 3.1 Flash text-to-speech. 30 voice presets, 80+ languages, inline expressive tags ([sigh], [laughing]), style instructions up to 4K chars, and multi-speaker support.

Capabilities

Text to Speech

Specifications

API Usage

cURL

curl https://www.flixly.ai/api/v1/generate \
  -H "Authorization: Bearer flx_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3-1-flash-tts",
    "prompt": "A beautiful sunset over the ocean",
    "type": "TEXT_TO_SPEECH"
  }'

Get your API key from the Developer Portal.