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EstablishedReleased May 20, 2025ProprietaryNon-Reasoning32K contextGemini TTS documentation

Gemini 2.5 Flash TTS Preview

Decision reading
Gemini 2.5 Flash TTS Preview 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 May 20, 2025 — see all recent releases

Data as of September 18, 2026 · How the score is built

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Voice benchmark evidence

Audio Realism Benchmark is an owner-defined voice evaluation. Its result stays separate from BenchLM's weighted text-model ranking.

Owner rank
#12 of 15
Elo-style rating
1,008
BT uncertainty
Not published
Win rate
36.1%
Battles
473
Avg. generation
4.61s
Provider API ID
gemini-2.5-flash-preview-tts
171 wins · 302 losses · owner snapshot 2026-08-31
Open benchmark profileModel documentation

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
Not published
Context window
32K
Maximum output
Not sourced yet
Knowledge cutoff
Not sourced yet
Input modalities
Not sourced yet
Output modalities
Not sourced yet
Parameters
Not disclosed by the provider
Availability
Preview model in the Gemini API.
Cloud regions
Not tracked yet
Lifecycle
Established
API capabilities
Tool calling, structured outputs, and batch support are not tracked yet
Prompt caching
Not documented in the pricing record
Self-host
Weights are not published
Rate limits
Not tracked yet

Lineage

The sequence follows explicit supersedes links. A successor's displayed score stays at least 0.1 points above its predecessor; raw benchmark rows do not move. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.

  1. May 20, 2025 · you are here

    Gemini 2.5 Flash TTS Preview

    Not publicly ranked · Price not listed

flash-preview · 2.5 Flash Preview

Gemini 3.1 Flash TTS PreviewGemini 2.5 Pro TTS Preview

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 2.5 Flash TTS Preview, 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 2.5 Flash TTS Preview is a proprietary model with a 32K context window. No explicit reasoning mode is documented in this profile.

Preview model in the Gemini API.

This preview text-to-speech model is tracked through a separate voice-experience benchmark and does not participate in BenchLM's weighted text-model ranking.

Gemini 2.5 Flash TTS Preview sits in the Gemini TTS family with Gemini 3.1 Flash TTS Preview, Gemini 2.5 Pro TTS Preview. The profile has no source-displayable benchmark row yet.

Questions

How does Gemini 2.5 Flash TTS Preview perform overall in AI benchmarks?

Gemini 2.5 Flash TTS Preview 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 2.5 Flash TTS Preview?

Gemini 2.5 Flash TTS Preview belongs to the Gemini TTS family. Related tracked variants include Gemini 3.1 Flash TTS Preview, Gemini 2.5 Pro TTS Preview. 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 2.5 Flash TTS Preview have full benchmark coverage on BenchLM?

No. Gemini 2.5 Flash TTS Preview currently has 0 source-displayable rows across 446 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 2.5 Flash TTS Preview?

Gemini 2.5 Flash TTS Preview has a reported context window of 32K in the exact-model catalog record. The value stays visible, but the profile marks its source link as unavailable instead of presenting it as directly documented. Maximum output length remains separate because providers often publish a different limit.

Compare Gemini 2.5 Flash TTS Preview with every tracked model490 comparisons

Last updated September 18, 2026. Runtime fields remain blank until a sourced snapshot exists.

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