Enter the text content for this dialogue segment.
Select the voice character for this dialogue.
Enter the text content for this dialogue segment.
Select the voice character for this dialogue.
Single speaker
Xavier: [calm] Welcome to Lati AI, where you can bring photos to life with AI Avatar Lip Sync. [excited] Upload an image and audio and watch your avatar talk naturally.
Multi-speaker dialogue
Juniper: [excitedly] Hey James! Have you tried the new ElevenLabs V3?
James: [curiously] Yeah, just got it! The emotion is so amazing. I can actually do whispers now— [whispering] like this!
AI Text to Speech | Online Multi-Speaker Voice Generator
Gemini Pro's AI text to speech engine converts written dialogue into natural-sounding multi-speaker audio using ElevenLabs' neural TTS pipeline. Select from 113 distinct AI voices spanning 8 categories, control emotional delivery with 39 audio tags ([excited], [whispering], [sarcastic], [laughing]), and generate in 75 languages with automatic detection. The system synthesizes each speaker's lines independently — preserving unique voice timbre, pitch variation, and prosodic rhythm across multi-line conversations. Output as MP3 for direct download, or feed the audio into Gemini Pro's AI Avatar Lip Sync to produce talking head videos — a complete text-to-video pipeline without recording equipment.
What is AI Text to Speech?
AI text to speech (TTS) uses neural network synthesis to convert written text into human-sounding audio with natural intonation, emotional expression, and rhythmic pacing. Unlike concatenative or parametric TTS systems that produce mechanical-sounding output, modern AI voice generators model the full spectral characteristics of human speech — including prosody (stress, rhythm, intonation), co-articulation (how adjacent sounds blend), and paralinguistic cues (emotion, emphasis). Gemini Pro's text to speech tool is built for multi-speaker dialogue generation, allowing you to assign distinct AI voices to different speakers and produce complete conversation audio in a single generation.
The defining feature of this AI voice generator is Audio Tags — inline markers like [excited], [whispering], [sarcastic], and [laughing] that give you explicit control over emotional delivery, speaking style, and non-verbal sounds at the sentence level. With 113 preset voices across 8 specialized categories (conversational, storytelling, video games, TikTok, Hollywood, announcers, relaxing, and best-v3) and native support for 75 languages, Gemini Pro's text to speech delivers production-quality dialogue audio for podcasts, audiobooks, game characters, e-learning narration, and marketing voiceovers. Generate your audio, then pass it directly to AI Avatar Lip Sync to create a talking head video — completing a full text-to-video pipeline without a recording studio.
AI Text to Speech Technical Capabilities
Multi-speaker neural TTS with audio tag emotion control on Gemini Pro.
Multi-Speaker Dialogue Engine
Assign independent AI voices to each speaker in your script and generate a complete multi-turn conversation in a single request. The TTS engine renders each voice separately — maintaining distinct timbre, speaking rate, and vocal characteristics — then assembles the dialogue with natural turn-taking cadence and timing.
39 Audio Tags for Emotion & Delivery Control
Insert inline audio tags like [excited], [whispering], [sarcastic], [laughing], and [sighs] to control how the AI voice generator delivers each line. Six tag categories — emotion, delivery style, non-verbal sounds, sound effects, accent, and pacing — give you sentence-level control over vocal performance without re-recording.
113 Distinct AI Voices
Browse 113 curated voice presets organized into 8 production categories: best-v3 (37), conversational (17), TikTok (10), video games (18), storytelling (8), Hollywood (9), announcers (9), and relaxing (13). Each voice carries a unique tonal signature, personality, and vocal texture — preview any voice with your actual text before generating.
75 Language Support with Auto-Detection
Generate AI text to speech in 75 languages including English, Chinese, Japanese, Korean, French, German, Spanish, Portuguese, Arabic, Hindi, Russian, and many more. Auto-detect mode identifies the input language from your text and optimizes pronunciation automatically — or manually select a language for dialect-specific accuracy.
Direct AI Avatar Lip Sync Integration
Generated TTS audio is natively compatible with Gemini Pro's AI Avatar Lip Sync tool. Write dialogue, generate multi-speaker speech, then upload the MP3 along with a portrait to produce a talking head video — completing a text-to-speech-to-video pipeline entirely within Gemini Pro.
Browser-Based, No Installation Required
The entire text to speech workflow runs in your browser on Gemini Pro's servers. Preview all 113 AI voices with your text, generate multi-speaker audio, and download as MP3 — no desktop software, plugins, or local processing required. Access from any device with a web browser.
Audio Tags Reference Guide
39 inline markers across 6 categories for granular control over AI voice delivery.
Audio Tags are directive markers inserted directly into your text that instruct the AI voice generator how to perform each line. Place a tag at the beginning of a dialogue line to set the baseline emotion, or embed tags mid-sentence to create dynamic shifts within a single utterance. All 39 tags work across every voice preset and all 75 supported languages.
Emotion Tags
excited, happy, sad, angry, surprised, disgusted, fearful, calm, serious, confused
[excited] This changes everything — we need to move now!
Delivery Style Tags
whispering, shouting, singing, laughing, crying, mumbling, yelling
[whispering] Listen carefully — they're right outside the door.
Non-Verbal Sound Tags
sigh, gasp, laugh, cough, clearing throat, sniff, yawn
[sigh] I suppose we'll have to start over from the beginning.
Sound Effect Tags
phone ringing, door knocking, footsteps, rain, wind, thunder, birds chirping
[door knocking] Excuse me, is anyone available?
Accent Tags
British accent, American accent, Australian accent, Indian accent
[British accent] Right then, shall we proceed with the meeting?
Pacing & Tempo Tags
slowly, quickly, with a pause, dramatically
[dramatically] And the final results are in...
Text to Speech + AI Avatar Pipeline
Convert text to talking head video in three steps — entirely within Gemini Pro.
Chain AI text to speech with AI Avatar Lip Sync for an end-to-end text-to-video production pipeline. Write multi-speaker dialogue, generate expressive speech audio with audio tags, then produce a lip-synced talking head video — no voice actors, no recording studio, no post-production audio sync.
1. Write Multi-Speaker Dialogue
Compose your script in the TTS editor. Assign a distinct AI voice to each speaker, insert audio tags for emotional delivery, and preview voice selections with your actual text before committing to generation.
2. Generate AI Speech Audio
Produce natural multi-speaker dialogue audio with a single click. The AI voice generator renders each speaker independently and assembles the full conversation with proper timing. Download the MP3 or continue to the next step.
3. Create Talking Head Video
Upload a portrait image and your generated TTS audio to AI Avatar Lip Sync. The lip sync AI extracts phoneme timing from the speech track and generates synchronized mouth movements, facial expressions, and head motion — delivering a broadcast-ready talking head video.
How to Use AI Text to Speech on Gemini Pro
Generate multi-speaker dialogue audio in three steps.
1. Write Your Dialogue Script
Enter text or multi-speaker dialogue in the TTS editor. Add separate lines for each speaker, insert audio tags like [excited] or [whispering] at emotional beats, and use natural punctuation to guide pacing. The editor supports up to 5,000 characters per generation.
2. Select AI Voices & Language
Browse 113 AI voices across 8 categories — conversational, TikTok, video games, storytelling, Hollywood, announcers, relaxing, and best-v3. Preview each voice with your actual text before selecting. Choose from 75 languages or let auto-detect identify the input language.
3. Generate & Download MP3
Generate your AI text to speech audio. Processing typically completes in 5 seconds to 5 minutes depending on script length. Download the finished MP3 directly, or pass it to AI Avatar Lip Sync to produce a talking head video.
AI Text to Speech Use Cases
Production scenarios where AI voice generation replaces live recording.
Podcast & Interview Production
Multi-voice episodes without live talent
Produce complete podcast episodes with distinct AI voices for each participant. Use audio tags to insert natural reactions — [laughing], [surprised], [thoughtful] — creating conversational dynamics that sound organic. The multi-speaker TTS engine handles turn-taking, pacing, and speaker transitions automatically.
Audiobook & Long-Form Narration
Character-distinct voices across chapters
Assign unique AI voice presets to every character in your manuscript. Control dramatic delivery with audio tags like [whispering], [dramatically], and [angry] to produce an immersive audiobook where each character has a recognizable vocal identity. Process chapter by chapter at up to 5,000 characters per generation.
Game Character Dialogue Prototyping
Rapid iteration on in-game audio
Generate and iterate on game dialogue using 18 specialized video game voice presets built for fantasy, sci-fi, action, and narrative genres. Test battle cries with [shouting], quiet cutscene moments with [whispering], and emotional beats with [sad] or [angry] — hearing results in seconds instead of scheduling voice actors.
E-Learning & Instructional Audio
Scalable narration across 75 languages
Generate professional course narration for online learning platforms, corporate training modules, and educational content. The AI text to speech engine supports 75 languages for global content distribution. Combine with AI Avatar Lip Sync to produce instructor talking head videos from the same audio.
Marketing Voiceovers & Ad Audio
A/B test voice and emotion at scale
Produce AI voiceovers for video advertisements, product demonstrations, and explainer content. Generate multiple script variations with different AI voices and emotional tones — then A/B test audience response to find the highest-performing combination without rebooking talent.
Social Media & Short-Form Audio
Platform-native voice content
Generate scroll-stopping voiceovers using 10 TikTok-optimized AI voice presets. Layer audio tags like [sarcastic], [excited], and [dramatically] for the delivery style that drives engagement on TikTok, Reels, and Shorts — then download the MP3 and sync to your video in any editor.
Best Practices for AI Text to Speech
Script Writing Guidelines
- Write dialogue as natural spoken language — contractions, informal phrasing, and conversational rhythm produce more realistic AI voice output
- Keep individual dialogue lines under 500 characters for optimal prosodic rendering by the TTS engine
- Use punctuation strategically: commas insert brief pauses, periods create full stops, and ellipses produce trailing hesitation
- Position audio tags at the beginning of each line to establish the emotional baseline for that utterance
Audio Tag Usage Guidelines
- Reserve audio tags for key emotional beats — over-tagging every line creates an unnatural performance cadence
- Layer complementary tags for nuanced delivery: pair an emotion tag ([excited]) with a pacing tag ([quickly]) for high-energy moments
- Non-verbal sound tags like [sigh] and [laugh] perform best at the start of a line where they serve as natural lead-ins to speech
- Iterate by testing different audio tags on the same text — small tag changes can dramatically shift the AI voice's delivery character
Technical Specifications
TTS Engine
- ElevenLabs neural multi-speaker dialogue synthesis engine
- 113 curated voice presets across 8 production categories
- 39 audio tags: emotion, delivery, non-verbal, sound effect, accent, pacing
- Stability parameter: Creative (0), Natural (0.5), Robust (1)
Input Specifications
- Text dialogue: up to 5,000 characters per generation across all speaker lines
- Multi-speaker: unlimited dialogue lines per request with independent voice assignment
- Languages: 75 supported with automatic language detection
- Audio tags: 39 inline markers for sentence-level emotion and delivery control
Output Specifications
- Format: MP3 audio file, direct download after generation
- Natively compatible with Gemini Pro AI Avatar Lip Sync input
- Processing time: 5 seconds to 5 minutes depending on script length
- Quality: neural synthesis with natural prosody, co-articulation, and emotional expression
More AI Tools on Gemini Pro
AI Text to Speech FAQ
Technical answers about AI voice generation and multi-speaker TTS on Gemini Pro.
Generate AI Text to Speech Now
Convert your script into natural multi-speaker dialogue audio with 113 AI voices, 75 languages, and 39 audio tags for emotional delivery control. Then pair your audio with AI Avatar Lip Sync to produce talking head videos — all on Gemini Pro.