Enter the text content for this dialogue segment.
Select the voice character for this dialogue.
Single speaker
Xavier: [calm] Welcome to the AI studio, where photos come to life with AI Avatar Lip Sync. [excited] Upload an image and an audio file, then watch your avatar speak 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 | Free Online Multi-Speaker Voice Generator
Convert text to natural-sounding speech with AI-powered multi-speaker dialogue generation. Choose from 113 distinct AI voices across 75 languages, and add audio tags like [excited], [whispering], or [laughing] to control emotion and delivery style. Generate expressive dialogue audio for podcasts, audiobooks, game characters, e-learning, and marketing content — then pair your audio with AI Avatar Lip Sync to create talking videos instantly.
What is AI Text to Speech?
AI Text to Speech (TTS) converts written text into natural-sounding human speech using deep learning models. Unlike traditional TTS that sounds robotic, modern AI voice generators produce speech with realistic intonation, emotion, and rhythm. Trellis 3D's text to speech tool specializes in multi-speaker dialogue — you can assign different AI voices to different speakers and generate a complete conversation audio file in a single request.
What makes this AI voice generator unique is Audio Tags — inline markers like [excited], [whispering], [sarcastic], and [laughing] that control exactly how each line is delivered. Combined with 113 preset voices spanning 8 categories (conversational, storytelling, video games, TikTok, Hollywood, announcers, relaxing, and more) and support for 75 languages, you get studio-quality text to speech output without recording a single word. Generate your dialogue audio, then use Trellis 3D's AI Avatar Lip Sync tool to turn it into a talking head video.
Text to Speech Key Features
Everything you need for professional AI voice generation.
Multi-Speaker Dialogue
Assign different AI voices to different speakers and generate complete conversation audio in one request. Create podcasts, interviews, audiobook dialogues, and game character conversations with natural turn-taking and timing.
Audio Tags Emotion Control
Add inline tags like [excited], [whispering], [sarcastic], [laughing], and [sighs] to control emotion, delivery style, and non-verbal sounds. 39 audio tags across 6 categories give you precise control over how each line sounds.
113 AI Voices
Choose from 113 distinct preset voices organized into 8 categories: best-v3, conversational, TikTok, video games, storytelling, Hollywood, announcers, and relaxing. Each voice has a unique character and tone.
75 Languages Supported
Generate text to speech in 75 languages including English, Chinese, Japanese, Korean, French, German, Spanish, Arabic, Hindi, and dozens more. Auto-detect mode identifies the language automatically.
AI Avatar Compatible
Generated audio works directly with Trellis 3D's AI Avatar Lip Sync tool. Create dialogue audio with text to speech, then upload it to AI Avatar to generate a talking head video — complete AI voice-to-video pipeline.
Free Online, No Download
Generate AI speech directly in your browser. No software installation, no sign-up required to preview voices. Your generated audio is ready to download as MP3 or use with AI Avatar Lip Sync.
Audio Tags Reference
39 audio tags across 6 categories for precise emotion and delivery control.
Audio Tags are inline text markers that control how the AI voice delivers each line. Place tags at the beginning of a dialogue line to set the emotion, or insert them mid-sentence for dramatic shifts. Tags work with all 113 voices and all 75 languages.
Emotion
excited, happy, sad, angry, surprised, disgusted, fearful, calm, serious, confused
[excited] Did you hear the news? This is incredible!
Delivery Style
whispering, shouting, singing, laughing, crying, mumbling, yelling
[whispering] I have a secret to tell you...
Non-Verbal Sounds
sigh, gasp, laugh, cough, clearing throat, sniff, yawn
[sigh] I guess we'll have to try again tomorrow.
Sound Effects
phone ringing, door knocking, footsteps, rain, wind, thunder, birds chirping
[door knocking] Hello? Is anyone home?
Accent
British accent, American accent, Australian accent, Indian accent
[British accent] Shall we have a cup of tea?
Pacing
slowly, quickly, with a pause, dramatically
[dramatically] And the winner is...
Text to Speech + AI Avatar Workflow
Create talking avatar videos in three steps — from text to video.
Combine AI Text to Speech with AI Avatar Lip Sync for a complete text-to-talking-video pipeline. Write your dialogue, generate expressive speech audio, then create a lip-synced avatar video — all without recording equipment or voice actors.
Write Your Dialogue
Type your script in the text to speech editor. Assign voices to each speaker and add audio tags for emotion control. Preview voices before generating.
Generate AI Speech
Generate natural multi-speaker dialogue audio. Download the MP3 file or proceed directly to the next step.
Create Talking Avatar
Upload a portrait image and your generated audio to AI Avatar Lip Sync. The AI synchronizes mouth movements and facial expressions to your speech, producing a realistic talking head video.
How to Use AI Text to Speech
Generate AI voice audio in three simple steps.
Write Your Text
Enter your text or dialogue in the editor. For multi-speaker conversations, add multiple dialogue lines and assign a voice to each speaker. Insert audio tags like [excited] or [whispering] to control emotion.
Choose AI Voices
Browse 113 AI voices organized by category — conversational, TikTok, video games, storytelling, and more. Preview each voice before selecting. Choose a language or use auto-detect.
Generate & Download
Click generate to create your AI speech audio. Processing typically takes 5 seconds to 5 minutes. Download the finished audio as MP3, or use it directly with AI Avatar Lip Sync.
Text to Speech Use Cases
Professional applications for AI voice generation.
Podcasts & Interviews
Generate multi-voice audio content
Create podcast episodes with multiple AI speakers, each with distinct voices and personalities. Use audio tags to add natural reactions, laughter, and emotional delivery without recording live talent.
Audiobooks & Narration
Bring stories to life with character voices
Assign unique AI voices to each character in your story. Use audio tags like [whispering], [excited], and [dramatically] to create an immersive audiobook experience with natural dialogue flow.
Game Character Dialogue
Prototype game audio rapidly
Generate dialogue for game characters using 18 specialized video game voices. Iterate on scripts and hear results instantly — from battle cries with [shouting] to quiet cutscene whispers.
E-Learning Content
Create engaging course narration
Generate clear, professional narration for online courses and training materials. Support 75 languages for global education content. Pair with AI Avatar for instructor talking head videos.
Marketing & Ads
Produce voiceovers at scale
Create AI voiceovers for video ads, product demos, and explainer videos. Generate multiple versions with different voices and emotions to A/B test audience response.
Social Media & TikTok
Viral-ready voice content
Generate trending voiceovers using 10 popular TikTok-style AI voices. Add [sarcastic], [excited], or [whispering] tags for engaging short-form audio content.
Best Practices for AI Text to Speech
Writing Tips
- Write dialogue as natural conversation — contractions and informal language sound more realistic
- Keep each dialogue line under 500 characters for optimal voice quality
- Use punctuation to control pacing: commas for pauses, periods for full stops
- Place audio tags at the start of a line for consistent emotion throughout
Audio Tag Tips
- Use audio tags at key emotional beats — don't tag every single line
- Combine emotion + delivery for nuance: [excited] with [quickly] in sequence
- Non-verbal tags like [sigh] and [laugh] work best at the beginning of a line
- Test different tags with the same text to find the most natural delivery
Technical Specifications
AI Model
- ElevenLabs Multi-Speaker Dialogue Engine
- 113 preset voices across 8 categories
- 39 audio tags for emotion and delivery control
- Stability control: Creative, Natural, Robust
Input
- Text dialogue: up to 5,000 characters per generation
- Multi-speaker: unlimited dialogue lines per request
- Languages: 76 supported (auto-detect available)
- Audio tags: inline text markers for emotion control
Output
- Format: MP3 audio file
- Compatible with AI Avatar Lip Sync input
- Processing time: 5 seconds to 5 minutes
- Download: instant after generation completes
More AI Tools
Text to Speech FAQ
Common questions about AI text to speech and voice generation.
Generate AI Speech Now
Convert text to natural AI speech with 113 voices, 75 languages, and audio tags. Create multi-speaker dialogue, then pair with AI Avatar for talking videos.