Google: Gemini 3.1 Flash TTS Preview
google/gemini-3.1-flash-tts-preview
Our take
AI-assisted analysis based on the sources below. Suitability is an editorial assessment; test it on your own workload.
google/gemini-3.1-flash-tts-preview is a text-to-speech model from Google listed in the OpenRouter catalog, which reports text input and speech output. The catalog describes it as a substantial generational step up from Gemini 2.5 Flash TTS and reports a context window of about 32,768 tokens. Evidence comes solely from this catalog entry; no independent model card was available in this source pack, and no measured performance data was reported. Treat the described capabilities as catalog claims pending validation on your own workloads. The preview label suggests the release may still change.[1]
Strengths
- Text-to-speech generation: the OpenRouter catalog lists a text-to-speech modality, with text input and speech output.[1]
- Per the catalog, it is positioned as a substantial generational improvement over Gemini 2.5 Flash TTS; this is a reported claim, not a measured result.[1]
- The catalog reports a large context window of roughly 32,768 tokens, which would permit long text inputs for synthesis.[1]
Limitations
- Evidence is limited to a single OpenRouter catalog entry; no independent model card was available in this source pack, so quality and behavior should be validated on your own workloads.[1]
- No benchmark or measured performance data was reported in the catalog entry.[1]
- The preview label in the catalog name suggests the offering may still change; stability and versioning details are unknown from this source.[1]
Where to use it
Sources
- [1] OpenRouter catalog · Google: Gemini 3.1 Flash TTS PreviewSources checked: Nov 13, 2026
About this model
Description below is the original text supplied by OpenRouter, shown in the source language.
Gemini 3.1 Flash TTS Preview is a text-to-speech model from Google, and a substantial generational step up from Gemini 2.5 Flash TTS. It takes text input and produces audio output...
Specifications
- Model ID
- google/gemini-3.1-flash-tts-preview
- Creator
- Added to OpenRouter
- 24.04.2026
- Context length
- 32,768
- Modality
- text->speech
- Input modalities
- text
- Output modalities
- speech
- Token pricing
- No per-token price in the source snapshot — see OpenRouter for the billing unit
- Knowledge cutoff
- —
- Expiration date
- —
Tasks and capabilities
A grade appears only where the source supplies a matching measurement for that task, the model is active and the cohort holds at least 10 comparable models. The capability column lists facts the source declares — supported formats, reasoning and tool parameters — which are not measured quality.
| Task | Grade | Source-declared capability |
|---|---|---|
| General quality | No measurement | — |
| Coding | No measurement | — |
| Agents | No measurement | — |
| Writing | No measurement | — |
| Reasoning | No measurement | — |
| Document analysis | No measurement | — |
| Vision | No measurement | — |
| Image generation | No measurement | — |
| Audio | No measurement | — |
| Video | No measurement | — |
| Embeddings | No measurement | — |
Evaluations
No evaluations are supplied for this model.
How grades work
Each letter grade compares a model only against other models scored by the same source and metric in the current snapshot. S means the top 10%, A the next 20%, B the next 30%, C the rest. Models without a published measurement are shown as not rated — a supported format alone never implies measured quality.
- S — S — top 10% of the cohort
- A — A — next 20% of the cohort
- B — B — next 30% of the cohort
- C — C — below the B band
Providers
Optional live provider statistics from OpenRouter. Missing values are unknown, not zero.
| Provider | Context length | Price in /1M | Price out /1M | Latency p50 (30m, s) | Throughput p50 (30m, tok/s) | Uptime (30m) |
|---|---|---|---|---|---|---|
| 32,768 | — | — | — | — | 100% |
Provider data retrieved: 13.11.2026
Related articles
No published articles identify this model yet.