What is the context window of Gemini 3.1 Flash TTS Preview?

Gemini 3.1 Flash TTS Preview has a context window of 16K tokens.

When was Gemini 3.1 Flash TTS Preview released?

Gemini 3.1 Flash TTS Preview was released on 2026-04-15.

Gemini 3.1 Flash TTS Preview

Name: Gemini 3.1 Flash TTS Preview
Author: Google DeepMind

Proprietary

About

Google's cost-efficient expressive text-to-speech model, released April 15, 2026. Supports 70+ languages, native multi-speaker dialogue, and 200+ audio style tags for precise delivery control. SynthID watermarking included. Achieves Elo 1,211 on the Artificial Analysis TTS leaderboard. Priced at $1.00/M input tokens and $20.00/M audio output tokens. API ID: gemini-3.1-flash-tts-preview.