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Gemini 3.1 Flash TTS Preview

google·google/gemini-3.1-flash-tts-preview·GA·Closed·gemini-flash series·Speech / Audio
Low-latency speech generation with steerable prompts and expressive audio tags

Specs & pricing

Input / output per 1M tokens
Official price·Google
$1.00 / $20.00
Blended $5.75 · Cache read —
Lowest paid·GoogleFirst-party
$1.00 / $20.00
Blended $5.75
1 more $0 channels
Context
8,192
Output limit
—
Knowledge cutoff
2025-01
Released / updated
2026-04-15 / 2026-04-15
Capabilities
ReasoningTool use? Structured output✓ TemperatureAttachments
⚠ Providers report capability flags inconsistently
Modalities
Text

Available at 2 providers1 with public prices · 1 free

ProviderTierInputOutputCache readCache writeContextOutput limitStatus
Kenari
gemini-3-1-flash-tts
GatewayFree——8,192—
GoogleOfficialFirst-party$1.00$20.00——8,192—

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Your usage cost

1Google · Official$1,200.00

1 more channels offer $0 (Kenari); free tiers usually have rate limits and no SLA, excluded from ranking.

The cheapest paid channel is official.

Price historyone sample accumulated per data sync

Input listOutput listMin blended
$20.00$02026-08-052026-08-132026-08-05 · Input list $1.002026-08-06 · Input list $1.002026-08-07 · Input list $1.002026-08-08 · Input list $1.002026-08-09 · Input list $1.002026-08-10 · Input list $1.002026-08-11 · Input list $1.002026-08-12 · Input list $1.002026-08-13 · Input list $1.002026-08-05 · Output list $20.002026-08-06 · Output list $20.002026-08-07 · Output list $20.002026-08-08 · Output list $20.002026-08-09 · Output list $20.002026-08-10 · Output list $20.002026-08-11 · Output list $20.002026-08-12 · Output list $20.002026-08-13 · Output list $20.002026-08-05 · Min blended $5.752026-08-06 · Min blended $5.752026-08-07 · Min blended $5.752026-08-08 · Min blended $5.752026-08-09 · Min blended $5.752026-08-10 · Min blended $5.752026-08-11 · Min blended $5.752026-08-12 · Min blended $5.752026-08-13 · Min blended $5.75

Artificial Analysis arenas1 arenas

Text to speech1209±12#13 of 93

Elo from human preference matchups run by Artificial Analysis. Each arena is anchored separately, so Elo is only comparable within one arena, against the other models on that board, and the 95% confidence interval (shown as ±) indicates how much of a gap is noise. Rank is over the whole arena, including models not listed here.

Related models

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Data partly from models.dev (MIT) · Google official docs ↗