> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Gemini 3.1 Flash TTS API

> Gemini 3.1 Flash TTS API on Venice: text to speech with 30 voices at $188 per 1M characters (about $0.1547 per minute). Anonymized access without your identity.

> [accordion] Plain-text specification
>
> ## Gemini 3.1 Flash TTS API
>
> Gemini 3.1 Flash TTS is a text-to-speech model by Google, available on the Venice API as `tts-gemini-3-1-flash`. Requests are anonymized, so the provider never sees your identity.
>
> ### Gemini 3.1 Flash TTS API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `tts-gemini-3-1-flash` | Standard | Anonymized | \$188 / 1M chars |
>
> ### Gemini 3.1 Flash TTS specifications
>
> | Spec | Value |
> | - | - |
> | Provider | Google |
> | Released | Apr 20, 2026 |
> | Privacy | Anonymized |
> | Status | Stable |
> | Voices | 30 |
> | Formats | mp3, opus, wav |
>
> ### How to use the Gemini 3.1 Flash TTS API
>
> Send requests to `POST https://api.venice.ai/api/v1/audio/speech` with `"model": "tts-gemini-3-1-flash"` and your API key.
>
> ```bash theme={"system"}
> curl https://api.venice.ai/api/v1/audio/speech \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "tts-gemini-3-1-flash",
>     "input": "Private AI for everyone.",
>     "voice": "Achernar",
>     "response_format": "mp3"
>   }' --output speech.mp3
> ```
>
> ### Related models
>
> * [MiniMax Speech-02 HD API](https://docs.venice.ai/models/minimax-speech-02-hd.md): \$125 / 1M chars
> * [ElevenLabs Multilingual v2 API](https://docs.venice.ai/models/elevenlabs-multilingual-v2.md): \$115 / 1M chars
> * [ElevenLabs TTS v3 API](https://docs.venice.ai/models/elevenlabs-tts-v3.md): \$115 / 1M chars
> * [Qwen 3 TTS 1.7B API](https://docs.venice.ai/models/qwen-3-tts-1-7b.md): \$113 / 1M chars


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