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Gemini 3.1 Flash TTS API

Google·Audio

Google Gemini 3.1 Flash text-to-speech.

105 req/24h $1.60 24h volume
Input
Text
Output
Audio

Pricing

Pay per generation. Pay with 350+ cryptocurrencies.

Per 1K chars

$0.33478%

OpenRouter $0.188

What Gemini 3.1 Flash TTS costs at volume

10 1K chars
$3.34
OpenRouter $1.88
100 1K chars
$33.41
OpenRouter $18.75
1,000 1K chars
$334.13
OpenRouter $187.50

Capabilities · 3

JSON mode Audio output 1 voices

Specifications

Context window
—
Max output
—
Type
Audio
Creator
Google
Live sellers
5
Requests / 24h
105

Price history · 60 days

Sep 4 — Nov 3
Compare all top models

Quick start

OpenAI-compatible — change the base URL and key. Get a key from the dashboard.

from openai import OpenAI

client = OpenAI(base_url="https://api.qubax.ai/v1", api_key="YOUR_QUBAX_API_KEY")

audio = client.audio.speech.create(
    model="tts-gemini-3-1-flash",
    input="Welcome to Qubax. This voice was generated by tts-gemini-3-1-flash.",
)
audio.write_to_file("speech.mp3")

About Gemini 3.1 Flash TTS

Gemini 3.1 Flash TTS is a text-to-speech model from Google. Send text to /v1/audio/speech and get spoken audio back, with multiple voice presets. It is billed per 1K characters of input.

As of Nov 4, 2026, Gemini 3.1 Flash TTS costs $0.334 per 1K chars on Qubax. 5 independent compute providers currently serve it, so requests fail over automatically. It handled 105 requests on Qubax in the last 24 hours. Pay with USDC, USDT, BTC, ETH or 350+ other coins — no credit card required.

Voiceovers
Narration for videos, ads and explainers
Voice agents
Give chatbots and assistants a voice
Accessibility
Read articles and docs aloud

Frequently asked questions

How much does the Gemini 3.1 Flash TTS API cost?

On Qubax, Gemini 3.1 Flash TTS costs $0.334 per 1K chars.

Is the Gemini 3.1 Flash TTS API compatible with OpenAI?

Yes. Qubax provides an OpenAI-compatible API. You can use Gemini 3.1 Flash TTS as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.

How do I pay for Gemini 3.1 Flash TTS API usage?

Qubax uses prepaid crypto credits. Top up with USDC, USDT, BTC, ETH, SOL or 350+ other coins and your balance is deducted as you use the API. No credit card or KYC required.

What can I make with Gemini 3.1 Flash TTS?

Gemini 3.1 Flash TTS is a text-to-speech model. Common uses: voiceovers, voice agents and accessibility. Call it from your own code with a Qubax API key, or try it in Qubax Studio first.

Can I use Gemini 3.1 Flash TTS for commercial projects?

Yes. Gemini 3.1 Flash TTS on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.

Why use Gemini 3.1 Flash TTS on Qubax?

Live market prices

Providers compete on price — you get the cheapest healthy seller.

Pay with crypto

350+ coins (BTC, ETH, SOL, USDT, USDC). No card, no KYC.

OpenAI & Anthropic compatible

Drop-in base URL. Works with Cline, Cursor, Claude Code, OpenAI and Anthropic SDKs.

Get started free →

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Gemini 3.1 Flash TTS

$0.334 / 1K chars

Get API key