Gemini Flash 3.1 TTS
Key facts
- Released
- Apr 15, 2026
- What it does
- Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.Makes sound: Creates speech, music or other audio.
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- Knowledge cutoff
- January 2025 · the latest events it learned about
- How
- For developers, through an API
- Announced as
- “Gemini 3.1 Flash TTS: the next generation of expressive AI speech”
From trckr's archive of releases before it started watching. Date and details from Epoch AI's database of AI models (CC BY 4.0).
Price and limits
What developers pay to use it through the API: How developers plug a model into their own apps and pay per use. A model that's "in the API" can be used by programmers, even if it isn't in a chat app yet., per million Tokens: The small chunks of text a model reads and writes, about three-quarters of a word each. Prices and limits are counted in tokens. sent (input) or written back (output), and how much it can take in at once.
- Input
- $1.00
- per million tokens
- Output
- $20.00
- per million tokens
- Context window: How much a model can keep in mind at once: your question, any files you share and its own replies. Measured in tokens; 1,000 tokens is about 750 words.
- 8K tokens
- about 6,100 words
From the lab's own listing on models.dev, checked .
Compare Gemini Flash 3.1 TTS with
It came out 20 days after Gemini 3.1 Flash Live, the lab's previous model.
The details
Model ID: The exact name developers type to use a model, like gpt-5-mini. New IDs often show up in a lab's systems before the official announcement, which is how trckr spots many releases early.
gemini-3.1-flash-tts-previewTimeline
/Gemini APIOfficialFirst signal
gemini-3.1-flash-tts-preview
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