Run Open WebUI on Gemini 3.1 Flash TTS Preview

by Open WebUIChat appopenwebui.com

Open WebUI is the most popular self-hosted AI interface, an extensible workspace that teams run on their own infrastructure, offline if needed. It connects to OpenAI-compatible APIs out of the box: add a connection with a base URL and key and the models behind it appear for your users. Connect Opper and one admin setting gives your whole deployment 700+ models, with a choice of EU or US inference behind your own walls.

Run

Open WebUIonin

Connect Open WebUI to Gemini 3.1 Flash TTS Preview

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

Get your API key

Where you can run it

Gemini 3.1 Flash TTS Preview runs on the routes below. Route only to EU providers when your data has to stay in Europe.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
Google Cloud	US		No	$1.00	$0	Input price

The model

Gemini 3.1 Flash TTS Preview

Gemini 3.1 Flash TTS by Google, fast and expressive text-to-speech with granular control tags and 70+ language support for natural narration.

Available on

Pricing from$1.00/ 1M input$0/ 1M output8Kcontext

Privacy

ZDR
Training: No
Region: US

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