Bright introduction
Hello, curious minds. Today we are exploring how a tiny seed becomes a plant. Let us begin with a glass of water and a little patience.
AI Audio Models
Google
Gemini TTS
Gemini 3.1 Flash TTS
Gemini 3.1 Flash TTS supports documented multi-speaker dialogue and voice controls, but a reliable maximum output-audio estimate is not yet available. Its details remain available while generation stays disabled.
Online use is currently unavailable
This page is for reviewing the model's capabilities, use cases, and public references. The model does not appear in the home workbench, and you cannot submit generation tasks with it.
Current Status
Blocked by Preauthorization
Input Format
Speakers + Ordered Dialogue
Call Boundary
No Task Creation or Credit Deduction
30-second overview
- This is not a Coming Soon model; its preauthorization requirements are incomplete.
- Multi-speaker input, ordered dialogue, accent, style, and pacing fields have been verified.
- The model does not appear in selectors, create tasks, or deduct credits.
Popular searches: Is Gemini 3.1 Flash TTS available now · Gemini 3.1 Flash TTS multi-speaker voice · Gemini 3.1 Flash TTS pricing
Examples
Calm instructions
Choose a comfortable position. Look around the room and find three colors. Name them slowly, then return your attention to the task.
Story opening
Mira found the little key beneath the blue flowerpot. It did not fit the front door, but it opened a box full of old postcards.
Friendly reminder
Your library books are ready at the desk. Bring your card when you visit, and ask us if you need help finding your next read.
Exhibition audio
This small wooden chair was made for a family kitchen. Look closely at the curved back and the marks left by years of use.
Clear summary
The group agreed on three actions: label the materials, confirm the room, and send the schedule. Each action has one owner and one date.
At a glance
Is this model right for you?
This model is neither Coming Soon nor discontinued. The current restriction comes from this site's preauthorization safety boundary: the speaker and dialogue arrays have no total item limit, and there is no provable worst-case conversion from input text to output audio tokens. The model is therefore excluded from selectors, and every request is rejected before any credits are deducted.
- What it does best
- A Gemini TTS candidate designed for faster speech generation and controlled multi-character dialogue.
- Who it is for
- People tracking podcast dialogue, narration, and character-voice trends who want to prepare future evaluation scripts in advance.
- Why use it on Kyeo AI
- This page publishes the verified capabilities and the precise reason generation is blocked. The model will not enter the workbench or callable interface until a safe preauthorization bound is established.
Key facts
Quickly evaluate whether this model fits your business use case.
Developer
Google
Model Family
Gemini TTS
Verified Input
Speaker Configuration and Ordered Dialogue
Text per Turn
Up to 10,000 Characters
Current Gap
Maximum Output Audio Token Bound
Other names
The same model may have different names in official documentation, community discussions, and API integrations. This section brings them together for you.
Gemini Flash TTS
Gemini 3.1 Text to Speech
Common questions
These practical questions focus on the task, input conditions, and result requirements you should confirm before choosing.
Is Gemini 3.1 Flash TTS available now
Gemini 3.1 Flash TTS multi-speaker voice
Gemini 3.1 Flash TTS pricing
How to use Gemini TTS
Gemini TTS alternative models
Decision guide
Still deciding? Start with these key decision points.
1
You need multi-speaker dialogue now
Use ElevenLabs Dialogue V3 first, and test speaker separation with a short script.
2
You need fast single-speaker narration now
Compare ElevenLabs Turbo 2.5 with Multilingual V2 first.
3
You are preparing a future evaluation
Save three non-sensitive scripts: narration, a two-person interview, and a short character scene.
Popular comparisons
Compare common alternatives on the same task to clarify differences in inputs, controls, and cost.
Gemini 3.1 Flash TTS vs ElevenLabs Dialogue V3
Why is Gemini 3.1 Flash TTS temporarily unavailable
Which voice controls does Gemini 3.1 Flash TTS support
Real-world experience
Practical guidance based on public sources, current on-site limits, and representative tasks.
Low latency does not establish a cost ceiling
Even if a model is positioned for speed, missing maximum output audio tokens means preauthorization coverage cannot be guaranteed.
Multi-character input expands worst-case usage
When the arrays have no total item limit, a 10,000-character cap on each turn does not bound the whole request.
Capabilities
Multi-Speaker Configuration
The contract assigns an identifier, voice, and accent to each speaker.
Ordered Dialogue
Dialogue is produced in sequence, with every turn linked to a declared speaker.
Voice Direction
The input can describe the scene, overall tone, audio profile, style, and pacing.
Use cases
Podcast Dialogue Planning
Prepare role-specific scripts for a host and guest.
Character Scene Preparation
Plan sequential dialogue and emotional pacing across multiple characters.
Future Side-by-Side Testing
Once generation opens, compare speaker separation, latency, and actual credit usage.
Prompt tips
Keep Speaker IDs Consistent
Every dialogue turn must reference a speaker that has already been declared.
Validate with a Short Script First
Check proper nouns, pauses, and speaker distinction before expanding the text.
Do Not Estimate Audio Length
Text length alone cannot prove the maximum number of output audio tokens.
Why choose it
Speaker, dialogue, and voice-control fields are clearly defined.
The documented capabilities cover both solo narration and multi-character dialogue.
Public model information remains strictly separated from actual generation.
What to know first
Voice tasks cannot currently be created, and credits cannot be deducted.
Each dialogue turn is capped at 10,000 characters, but the speaker and dialogue arrays have no total item limit.
Input token pricing cannot prove the worst-case cost of output audio tokens.
Currently unavailable
This page is for reviewing the model's capabilities, use cases, and public references. The model does not appear in the home workbench, and you cannot submit generation tasks with it. A Gemini TTS candidate designed for faster speech generation and controlled multi-character dialogue.
No additional settings are available for this model.
Frequently asked questions
Related models
Still deciding? Take a quick look at these similar alternatives.
ElevenLabs Dialogue V3
ElevenLabs Dialogue V3 provides line-by-line dialogue generation: enter each turn, choose a voice, and pay by total dialogue length. It is not a real-time voice agent, and ElevenLabs notes that users may need multiple generations to find a usable result. Start with a sample to check speaker changes, audio tags, language code, output format, and long-script completeness.
AI audio model
14 credits / 1000 characters
ElevenLabs Turbo 2.5
ElevenLabs Turbo 2.5 is a retained single-speaker TTS workflow on Kyeo AI. It exposes a voice choice plus stability, similarity boost, style, speed, timestamps, surrounding text, and language code. The workflow remains selectable, but ElevenLabs now recommends Flash v2.5 instead. The Turbo name does not make low latency, language support, timestamp accuracy, voice authorization, or output quality a Kyeo guarantee.
AI audio model
6 credits per 1,000 characters
ElevenLabs Multilingual V2
ElevenLabs Multilingual V2 is Kyeo AI's current single-speaker, high-naturalness voiceover page. It shares a similar form with Turbo 2.5, but the task boundary differs: Turbo is a fast voiceover baseline, while Multilingual V2 is aimed at long-form narration, cross-language content, and sustained brand voice. Kyeo still uses a fixed voice list and a 5,000-character entry, so the practical decision is whether the listening experience justifies twice Turbo's per-character cost.
AI audio model
12 credits / 1000 characters
Sources
This page is based on vendor materials, model-family documentation, and Kyeo AI integration settings.
Source note
The speaker, dialogue, voice-control, and token-rate contract for Gemini 3.1 Flash TTS has been verified. However, the maximum number of output audio tokens cannot be proven before a request is created, so generation is not currently available on this site.
Last updated: 2026-08-28
Gemini 3.1 Flash TTS — Generation Temporarily Unavailable
Editorial review