CAPI
Models/Gemini TTS
Audio

Gemini TTS

by Google

Gemini TTS API access for multi-speaker dialogue with configurable voices, accents, delivery styles, and pacing.

Get API KeyRead the docs

Capabilities

  • Text to speech
  • Multi-speaker
  • Dialogue

Available models

Pass any of these IDs in the model field.

Model IDDetailPrice
gemini-3-ttsper 1K tokens$0.0014 / 1K tokens

Pricing starts at

$0.0014 / 1K tokens

Pay only for what you use. Each response returns the exact amount settled against your balance — no subscriptions, no minimums.

Quickstart

Gemini TTS · gemini-3-tts

cURL
curl -X POST https://capi.ai/api/v1/audio/speech \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"model":"gemini-3-tts","input":"Welcome to CAPI."}' \
  --output out.mp3

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