How to Use Google AI Studio TTS: Generate Natural AI Voiceovers with Gemini 3.1 Flash

 

Google AI Studio is now one of the most powerful free platforms for AI voice generation. On April 15, 2026, Google DeepMind released Gemini 3.1 Flash TTS a text-to-speech model that introduces more than 200 granular audio tags for steering vocal style, tone, pacing, and accent, topping the Artificial Analysis TTS leaderboard with an Elo score of 1,211. Whether you're creating YouTube voiceovers, ads, or podcasts, this guide walks you through every step.

What Is Google AI Studio TTS and Why It Stands Out

Unlike traditional TTS APIs that accept raw text and output robotic speech, Gemini 3.1 Flash TTS accepts structured prompt-style inputs that define speaker personality, environment, emotional arc, and line-by-line delivery. Think of it as directing a voice actor through script annotations rather than recording multiple takes. The result is a voiceover tool that gives you full creative control without a recording studio.

How to Get Started with Google AI Studio TTS

Step 1: Access the Audio Playground

• Go to aistudio.google.com → click Playground from the left sidebar → select the Audio tab at the top.
• Choose a baseline voice from the 30 available prebuilt voices and a target language from over 70 supported options and regional variants this selection serves as your foundation. (Pazi na Potepu)

Available Model Types:

• Gemini 2.5 Flash: TTS fast, low-latency, ideal for YouTube voiceovers and short-form content
• Gemini 3.1 Flash: TTS Preview more expressive, better instruction adherence, lower latency (Niche Pursuits) , best for ads, podcasts, and commercial narration
• Gemini 2.5 Pro TTS higher quality, better for long-form narration and audiobooks
• Lyria 3 Clip Preview: generates 30-second music clips from a text prompt, ideal for background tracks and short conten
• Lyria 3 Pro Preview: generates full tracks up to 3 minutes with customizable verses, choruses, and bridges.

Step 2: Choose Your Quickstart Template

Google AI Studio includes ready-made scene templates to help you get started quickly.

Available Templates (as shown in the interface):

• The Everyday Assistant: helpful and professional personal assistant voice
• The Guarded NPC: multi-character dialogue for gaming or fantasy content
• The Energetic Co-Host: podcast-style conversation
• The Master Storyteller: crafts storytelling narration
• The Ad Voiceover: smooth, premium commercial voice (great for YouTube ads)
• The Training Guide: clear and authoritative corporate trainer
• The Game Show Host: vibrant and theatrical host
• The Patient Teacher: patient and encouraging language teacher

Step 3: Set Up Your Scene and Speaker

Once inside the Playground, you'll see three main areas (as shown in your screenshots):

• Scene Field: Write your overall context and character description here. Example:

"The Sound Stage Booth. The voice is a young male, approximately 25–35 years old, friendly, warm, and encouraging tone, professional delivery style suitable for commercial advertisements."

• Speaker Block: Assign a speaker name and select their voice profile (e.g., Speaker 1 Orus)
• Model Selector (top right): Choose between Gemini 3.1 Flash TTS Preview or other available models
• Speaker Settings (right panel): Fine-tune the selected voice (pitch, tone characteristics)

Step 4: Control Emotion and Delivery with Audio Tags

You can specify tone and emotion in two ways: a natural language instruction applied to the full passage, or inline tags that wrap specific words or phrases.

Emotion Tags (write in square brackets inline):

• [intrigue]: mysterious, draws the listener in
• [desire]: warm, aspirational tone
• [information]: clear, neutral delivery
• [inspiration]: uplifting, motivational
• [confident]: firm, authoritative
• [excited]: high energy, enthusiastic
• [calm]: slow, relaxed pace
• [sad]: low, emotional delivery
• [angry]: sharp, forceful tone
• [sarcastic]: dry, ironic tone
• [whisper]: soft, intimate delivery
• [urgent]: fast, tense, pressing

Example Script Using Inline Tags (as shown in your screenshot):

• "[intrigue] You don't just want a car. [desire] You want a sanctuary. [information] Introducing the all-new Aetheris Sedan. [inspiration] It's not just about getting to your destination. It's about arriving inspired. [confident] Aetheris. Move beautifully."

Step 5: Set Accent and Language

Simply describe the style you want to achieve whether you need a specific regional accent, a professional narrator's tone, or a more casual conversational vibe.

Accent Examples to write in Scene field:

• "American English, Southern California accent, casual and energetic"
• "British English, formal and authoritative"
• "Australian English, friendly and relaxed"
• "Palestinian Arabic, natural everyday dialect, no exaggeration"
• "Egyptian Arabic, warm and engaging"

The model supports 70+ languages with the same style and accent controls available across all of them.

Step 6: Add Multiple Speakers for Dialogue

You define multiple speakers inside a single prompt, assign individual voice profiles, personality traits, and emotional arcs to each, and the model maintains their in-character consistency across turns.

Use cases:

• Podcast episodes with two hosts
• YouTube videos with an interviewer and guest
• Ad scripts with multiple characters
• Audiobook narration with distinct character voices

Click + Add speech block at the bottom of the Playground to add a second speaker.

Step 7: Export and Use Your Voiceover

Once the performance is perfected, these exact parameters can be exported as Gemini API code to ensure consistent, recognizable voices across various projects and platforms.

Export options:

• Download audio directly from the Playground (download icon in the bottom bar)
• Export as API code via Get code button (top right) for developer use
• Use directly inside Google Vids for Workspace users

Note: The TTS surface is optimized for under-30-minute clips at production quality. Longer content like full audiobook chapters needs to be generated in segments.

Quick Reference: Google AI Studio TTS at a Glance

Feature	Details
Model	Gemini 3.1 Flash TTS Preview
Available Voices	30 prebuilt voices
Languages	70+ including Arabic, English, French
Audio Tags	200+ emotion, pacing, and style tags
Multi-speaker	Yes — native, no separate API calls
Export	Audio download + API code
Access	Free via aistudio.google.com
Watermark	SynthID auto-applied to all outputs

Your AI Voice Studio Is Ready

Google AI Studio TTS removes every barrier between your script and a professional voiceover. Scene direction lets you define environment context so AI voices stay in character across dialogue turns, and inline tags can override speaker settings on the fly useful for emotional shifts within a single line.