Gemini 3.8 Flash TTS and Flash-Lite TTS released
Google · Model release
Source confirmed
Data as of September 23, 2026 · How the score is built
CurrentProprietaryNon-Reasoning
Gemini 3.8 Flash TTS
Decision readingGemini 3.8 Flash TTS is tracked, but not publicly ranked yet. The profile exposes 0 sourced benchmark rows and leaves unsupported fields blank until a published record exists.
Released Sep 23, 2026 — see all recent releases
Gemini 3.8 Flash TTS will be repriced, updated or retired. Get each notice with its source and date. Follow model changes
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Voice benchmark evidence
Gemini 3.8 TTS launch evaluation is an owner-defined voice evaluation. Its result stays separate from BenchLM's weighted text-model ranking.
Hume Voice Design Benchmark
71.4 (#1)
Hume accent modeling
60.8 (#1)
Hume Overall Quality Index
#1
Provider API ID
gemini-3.8-flash-tts
Google launch claims · September 23, 2026 · voice results are display-only
Lineage
The sequence follows explicit supersedes links. Each score is estimated for that model; a relative can inform a sparse estimate but never sets a floor, so a newer release can score below an earlier one. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.
Base entry
Gemini 3.8 Flash-Lite TTSRadar
Full release historyGemini 3.8 Flash TTS release history
Radar confirmed these at the source. Use Gemini 3.8 Flash TTS in your work? Explore Radar to follow supported changes and choose your alerts.
Radar
Spec sheet
Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.
- API model ID
- gemini-3.8-flash-ttsGoogle Gemini 3.8 Flash TTS model documentation
- Context window
- 8KGoogle DeepMind Gemini 3.8 Audio model card
- Maximum output
- Not sourced yet
- Knowledge cutoff
- Not sourced yet
- Input modalities
- textGoogle DeepMind Gemini 3.8 Audio model card
- Output modalities
- audioGoogle DeepMind Gemini 3.8 Audio model card
- Parameters
- Not disclosed by the provider
- Availability
- Gemini API · Google AI StudioGoogle Gemini 3.8 Flash TTS model documentation
- Cloud regions
- Not tracked yet
- Lifecycle
- activeGoogle Gemini 3.8 Flash TTS model documentation
- API capabilities
- Tool calling, structured outputs, and batch support are not tracked yet
- Prompt caching
- Not documented in the pricing recordGoogle model documentation
- Self-host
- Weights are not published
- Rate limits
- Not tracked yet
How to read this profile
The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.
We track Gemini 3.8 Flash TTS, but no weighted text-model benchmark result is published on the site yet. This page shows the metadata and separate protocol evidence we can verify now; a BenchLM score will appear only if compatible public evaluations land.
Gemini 3.8 Flash TTS is a proprietary model with a 8K context window. No explicit reasoning mode is documented in this profile.
Released September 23, 2026 as the stable `gemini-3.8-flash-tts` model in the Gemini API and Google AI Studio, with Gemini Notebook access rolling out. Google documents 8,192 text input tokens, audio output, 130 supported languages, voice design and replication, and SynthID watermarking. Gemini Enterprise API access is planned, not yet available.
Gemini 3.8 Flash TTS is a display-only text-to-speech model for voice design, long-form narration, and multi-speaker dialogue. Its voice results remain separate from weighted text-model scores.
Gemini 3.8 Flash TTS sits in the Gemini 3.8 TTS family with Gemini 3.8 Flash-Lite TTS. The profile has no source-displayable benchmark row yet.
Last updated September 23, 2026. Runtime fields remain blank until a sourced snapshot exists.
Questions
How does Gemini 3.8 Flash TTS perform overall in AI benchmarks?
Gemini 3.8 Flash TTS does not have any source-displayable benchmark rows yet, so this profile does not assign a public score or rank. Documented specifications remain visible, while score-led charts and claims stay unavailable until a published evaluation can be attached to the exact model.
Which sibling models are related to Gemini 3.8 Flash TTS?
Gemini 3.8 Flash TTS belongs to the Gemini 3.8 TTS family. Related tracked variants include Gemini 3.8 Flash-Lite TTS. A sibling link indicates shared lineage or a documented configuration relationship; it does not mean the variants have identical pricing, context limits, benchmark evidence, or deployment behavior. Compare before switching.
Does Gemini 3.8 Flash TTS have full benchmark coverage on BenchLM?
No. Gemini 3.8 Flash TTS currently has 0 source-displayable rows across 482 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.
What is the context window size of Gemini 3.8 Flash TTS?
Gemini 3.8 Flash TTS has a documented context window of 8K. That figure is the maximum combined prompt and retained-conversation space reported for this exact model; it is not the maximum output length. The profile keeps output limits separate because providers often publish those limits independently.