--- title: "Gemini 3.1 Flash TTS" description: "Gemini 3.1 Flash TTS on Kuro: Thirty voices across twenty-five languages, from Google. 10.67 credits per 1,000 characters (≈ $0.25 on Starter)." canonical_url: "https://meetkuro.com/models/gemini-3.1-flash-tts/" locale: "en" model: "gemini-3.1-flash-tts" --- # Gemini 3.1 Flash TTS Google · Voice · standard Thirty voices across twenty-five languages, from Google. ## What it costs - Per 1,000 characters: 10.67 credits (≈ $0.25) Dollar figures are approximate, at the Starter plan's rate of $19.00 for 800 credits. ## What it takes - **Voices**: 30 - **Languages**: 25 - **Text limit**: 4,000 characters ## When to reach for it The broadest roster in the voice catalog: thirty preset voices and twenty-five languages. If the job is narration in a language other than English, this is the first place to look, because breadth is exactly what it offers. The voices are named after stars (Achernar, Achird, Algenib), which tells you nothing about how they sound, so the character descriptions in the picker are doing the real work of making a choice possible. Expect to audition several rather than picking by name. It carries no emotion selector and no speed control, which makes it the least directable of the multilingual models here. Delivery comes from the text: punctuation, sentence length and phrasing are the controls you have. Where that is not enough, for a line that needs a specific emotional read or narration that has to sit at a particular pace under a cut, MiniMax Speech 2.8 HD offers both emotion and speed, across twenty-four languages, and is the better tool for directed delivery. ## How to prompt Gemini 3.1 Flash TTS Describe what you want in your own words and Kuro writes the prompt for you. If you would rather write it yourself, this is what Gemini 3.1 Flash TTS responds to. Two fields, two jobs. The text is what is spoken, word for word. The style direction — "Read this warmly and unhurried, like a bedtime story" — is read by the model and never spoken. Direction written into the text is spoken aloud, so keep how to say it out of the words. Beyond the style direction, delivery comes from the writing: punctuation, sentence length and phrasing are the controls. Thirty preset voices across twenty-five languages make it the broadest roster in Kuro and the first place to look for narration in a language other than English. The voices are named after stars — Achernar, Achird, Algenib — which says nothing about how they sound, so audition several. ### What it can't do - No speed and no emotion control. - Preset voices only; no custom voices. Kore is the default. - At most 4,000 characters of text per take. - Output is WAV. - Lines generated separately do not sound like one performance — pace, pitch and breath reset each time. For a split script, record it once and cut it at its pauses. ### Use something else when… - A line needs a specific emotional read or a set pace: [MiniMax Speech 2.8 HD](https://meetkuro.com/models/minimax-speech-2.8-hd.md). - It is a lot of English narration and a clean neutral read is enough: [Kokoro 82M](https://meetkuro.com/models/kokoro-82m.md). - The performance has to turn mid-line: [Eleven v4](https://meetkuro.com/models/eleven-v4.md). ## Made with it - **Explain it end to end** — Seven scenes, cut to the voice-over. ![A clay office worker over a mug, then a clay cave where sludge fills glowing sockets and a grinning impostor plugs one without lighting it, then the sludge flooding his office](https://meetkuro.com/showcase/ladders/explainers/caffeine.webp) - **Make it a moving page** — Nine collage scenes, one shared look. ![A torn hole in a scrapbook page between a typed prompt card and a photo of a red bicycle, then an encyclopedia spread of lighthouse frames dissolving into static, a compass needle swinging, and a filmstrip carrying the same bicycle across eight frames](https://meetkuro.com/showcase/ladders/explainers/diffusion.webp) - **Draw it instead of shooting it** — Ink on paper, cut to a voice. ![A hand-drawn stick figure at a desk, a fan of small framed pictures pouring out of his laptop screen](https://meetkuro.com/showcase/ladders/explainers/ink.webp) - **Explain it in fifteen seconds** — Four flat-vector scenes, cut to the voice. ![A flat vector calendar crossing itself out and blowing away, then a balance scale weighing one year against every year before it, two bars divided into five fat segments and fifty hairlines, and a figure stepping out of grey doorways onto a bright path](https://meetkuro.com/showcase/ladders/explainers/time.webp) ## Guides that cover it - [P-Video: the complete guide to Pruna's four models](https://meetkuro.com/guides/p-video-prompting.md): Four models, one family: a cheap generator and three performance rigs. What each one takes, what a take really costs, and the failures worth knowing first. ## Gemini 3.1 Flash TTS is one pick in the composer. Every model in this catalog runs from the same prompt bar, priced in the same credits. --- ## About Kuro Kuro is an AI picture studio: prompt-driven images, clips, voice-overs and music, and storyboard-backed films with consistent characters across every scene. Agents connect over MCP and can generate directly: ``` claude mcp add kuro https://api.meetkuro.com/mcp --transport http ``` The app is at https://app.meetkuro.com and requires an account. Each guide, model page, comparison and free tool page on this site (not a tool's variants, and not the index pages) has a Markdown twin at its own URL plus `.md`, and so do /benchmarks/, the English /agents/ page (as /agents.md) and the MCP tool reference. Model catalog: https://meetkuro.com/models/