Gemini 3.1 Flash TTS Preview
Low-latency speech generation with steerable prompts and expressive audio tags
- Price per 1M tokens
- $1 / $20 input / output · Google
- Context window
- 8.2K tokens in · 16.4K out
- Since the last one
- 197 days after Gemini 2.5 Flash TTS
Since Gemini 2.5 Flash TTS
3 releases in the Gemini line.
Gemini 2.5 Flash TTSSep 30, 2025197dGemini 3.1 Flash TTS PreviewApr 15, 2026160dGemini 3.8 Flash TTSSep 22, 2026
Released197 days later
Context8.2Kwas 32.8K
A newer release is out: Gemini 3.8 Flash TTS.
BENCHMARKS
Not in the Epoch Capabilities Index. Epoch benchmarks what it can run, so this is a gap in coverage, not a poor result.
Google's past year
37 release days in the past year, about one every 10 days. The next is expected around Nov 3, 2026. Forecasts ↗
NovDecJanFebMarAprMayJunJulAugSepOctNov
Specifications
RELEASE DATEApr 15, 2026
WEIGHTSClosed weights
CONTEXT WINDOW8.2K
MAX OUTPUT16.4K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext
OUTPUTSaudio/l16
Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.