Seed Audio 1.0 AI Audio Generator

AudioModelLanguageVoice
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ByteDance's Seed Audio 1.0. Voice, music, and effects in one pass.

Every audio model

One workspace

Made with Seed Audio 1.0

Documentary narration

Speech, warm and measured

Thriller voice-over

Speech, hushed and tense

Spice-market ambience

Sound effects, open-air bed

Thunderstorm

Sound effects, storm to a clap

Orchestral cue

Music, rising strings and brass

Lo-fi beat

Music, soft keys and vinyl

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Generate audio in three steps

  1. 01

    Open Morphic

    Sign up and start creating on a free-flowing, infinite visual canvas.

  2. 02

    Write the scene

    Setting, cast, music and effects, each voice, then the lines. Up to 3,000 characters.

  3. 03

    Generate and refine

    Voice, music, and effects come back mixed. Adjust the brief and swap models on the Canvas.

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What Seed Audio 1.0 generates

A whole scene in one pass

Voice, instrumental music, and sound effects together, proportioned and mixed for the scene. A cafe prompt gets ambient chatter and the right acoustic space, not generic room tone.

A cinematic film still: a lone figure with an umbrella on a rain-slicked street at dusk

Audiobooks and long-form narration

Narration, character voices, and sound design without a studio session. Cast the narrator once, then work through the book scene by scene with the same voice reference.

A cozy home recording nook with a studio microphone lit by a warm key light

Dialogue with a full cast

Write several characters into one scene and each gets its own voice, emotion, and pacing in a single generation, with the ambience and effects around them.

Two people mid-conversation across a small cafe table by a rain-streaked window

Dubbing that lands on the cut

Put a timestamp on each line and the delivery fits that exact window. Pull the in and out points from your timeline and the track drops onto picture without stretching or trimming.

An audio-editing workspace with a glowing waveform timeline on a dark monitor

Anatomy of a Seed Audio prompt

Name four things and the model has what it needs: where the scene sits, who is speaking, what they say, and when it has to land.
SettingVoiceLineTiming
SettingSoft kitchen ambience, a low oven hum,Voicea calm narrator, warm and unhurried, saysLine"Combine the flour and the butter."Timingnatural pacing, no rush
SettingA packed stadium, the crowd roaring,Voicea British commentator, hoarse with excitement, shoutsLine"OH, HE SCORES! What a goal!"Timingthe cheer erupts on the word and runs to the end
SettingA station platform at night, a train idling,Voicea young man, warm and breathless, calls outLine"Maya! Wait, you are really leaving tonight?"Timing[5.5s:8.0s]
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Related workflows

Time-freeze effect

Cinematic time-freeze short film for any scene

Try this workflow
Messages to cinematic scene

Messages to cinematic scene

Dramatize any text conversation into a cinematic multi-shot video.

Try this workflow
Cinematic storyboard

Cinematic storyboard

Share a scene description with character references. Get a full storyboard with shot angles and mood.

Try this workflow

Dance your character

Upload a character image and make it dance in any style.

Try this workflow

Put yourself in a movie

Drop in a photo of yourself. Get a 12-second cinematic movie with animation and a matched soundtrack.

Try this workflow
Title sequence

Title sequence

Generate a professional film title card from scratch, with optional cinematic animation.

Try this workflow

All on Morphic

Your complete audio stack

Seed Audio 1.0

The full model page: the four modes, twenty languages, timestamp control, and the limits worth knowing before you start.

Voice and dialogue

Narration, character voices, and scripted conversation. Cast from a description, a character image, or a reference clip.

Effects and ambience

From one-shot impacts to looping ambience beds. Generate sharp foley and atmospheric soundscapes from the same prompt bar.

Workflows

Turn any repeatable audio job into a one-click rerun. Save it as a Workflow, then share or rerun it anytime.

Simple pricing

Get started for free today, with the option to upgrade or cancel anytime.

Basic

$9/ month
billed as $0 per year

900 monthly credits

1 user only

All models

Workflows

Standard

$24/ month
billed as $0 per year

3200 monthly credits

1 user only

All models

Workflows

Pro

$45/ month
billed as $0 per year

6200 shared monthly credits

1 user

+ up to 4 more at extra cost

All models

Workflows

Pro Max

$170/ month
billed as $0 per year

24000 shared monthly credits

1 user

+ up to 9 more at extra cost

All models

Workflows

Enterprise

For higher limits

Custom

pricing and billing terms

High-volume credits
Custom seat limits
All models
Workflows
Pricing Gradient

Free

For playing around

$0

forever free

Up to 20 credits
1 user only
Limited models
Workflows
Compare plan details

FAQs

What is the Seed Audio 1.0 AI audio generator?
Seed Audio 1.0 is ByteDance's all-in-one text-to-speech model. One prompt returns voice, instrumental music, and sound effects together as a finished, mixed track, rather than three files you assemble yourself. Describe the room, the score, the effects, and each character's voice, then write the lines, and the whole scene comes back in a single pass.
What makes Seed Audio 1.0 different from a normal text-to-speech generator?
Ordinary text-to-speech picks a voice and reads text aloud. Seed Audio 1.0 moves from text-to-speech to reference-to-audio: the prompt describes a whole scene, up to 3,000 characters of it, and the model renders the voices, the ambience, and the music proportioned and mixed for that scene.
Can I control exactly when each line lands?
Yes. Put a timestamp such as [5.5s:8.0s] at the start of a line and the model fits that delivery into the exact window, adjusting pace and pauses so it fits. That is what makes it practical for dubbing, where the audio has to match picture instead of roughly fitting it.
How do I get a specific voice?
Three ways. Describe it in text with age, accent, emotion, tone, and speed. Upload a character image and the model derives a matching voice. Or supply up to three reference clips of 30 seconds each and tag them to characters, so the generated voices follow your recordings.
What languages does Seed Audio 1.0 support?
Twenty, including English, Chinese, Japanese, Korean, Spanish, French, German, Portuguese, Indonesian, and Turkish. Write the prompt in the same language as the lines you want spoken, which is the single biggest factor in getting the accent right.
Can I use the Seed Audio 1.0 AI audio generator online?
Yes. Everything runs in the browser on Morphic, with no download or install. Write the scene, generate, and the track lands on your Canvas from any laptop, including machines with no GPU.
Is the Seed Audio 1.0 AI audio generator free?
Morphic offers a free tier so you can start generating audio right away, no payment required. For higher volume or commercial use, paid plans are available.

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