Gemini 3.8 Flash TTS
Google's speech model: describe the delivery in style instructions. On Leap, it sits beside 130 other models in one studio.
- Text to speech
- Start free, no card
- Every top model, one account
- Pay per run, priced before it starts
- 01Write the words, pick a voice
- 02See the exact price, then press go
- 03Keep it in your library, or take it further
Start with an idea
Three ways to try Gemini 3.8 Flash TTS
Questions
Gemini 3.8 Flash TTS on Leap, answered.
- Is this the real Gemini 3.8 Flash TTS?
- Yes. Leap sends your request to Google's model through its provider and gives you back what it makes. Switch to any other model in the same studio when an idea needs it.
- What does it cost?
- In dollars, per run: the provider's list price plus 10%. You see the exact price before every run, a run that fails costs nothing, and there is no subscription. Every model's price is on the pricing page.
- Do I need a Google account?
- No. One Leap account and one balance run Gemini 3.8 Flash TTS and every other model, in the studio, through the API and from your agents.
- What happens to what I make?
- It stays in your library while your account is active, ready to use anywhere.
Your idea, Gemini 3.8 Flash TTS.
Start free, no card. Every run shows its price before it starts.
Make it with Gemini 3.8 Flash TTSFor developers
Run Gemini 3.8 Flash TTS from code
- Model ID
- google/gemini-3.8-flash-tts
- Makes
- Voice and sound
- Pricing
- Per run, quoted first: POST /v1/quotes
Inputs
What the model takes. Leave out anything with a default.
Texttext
Text, up to 4,000 characters, required
Voicevoice
Kore, Achernar, Achird, Algenib, Algieba, Alnilam, Aoede, Autonoe, Callirrhoe, Charon, Despina, Enceladus, Erinome, Fenrir, Gacrux, Iapetus, Laomedeia, Leda, Orus, Pulcherrima, Puck, Rasalgethi, Sadachbia, Sadaltager, Schedar, Sulafat, Umbriel, Vindemiatrix, Zephyr, Zubenelgenubi. Default: Kore
Style Instructionssettings.style_instructions
Text, up to 4,000 charactersDelivery style, separate from the spoken transcript.
The request
The same envelope for every model; only the model and its input change. With prefer: wait=60 the answer holds the result. Agents can call it through the MCP server at mcp.tryleap.ai.
curl https://api.tryleap.ai/v1/generations \ -H "x-api-key: $LEAP_API_KEY" \ -H "content-type: application/json" \ -H "prefer: wait=60" \ -d '{ "model": "google/gemini-3.8-flash-tts", "input": { "text": "A paper boat drifting down a rainy street at dusk" } }'