Seed Audio 1.0 is now available in OpenCake AI Models. It is ByteDance Seed's AI audio generation model for turning a written prompt, reference audio, or image guidance into generated audio.
The important shift is that Seed Audio 1.0 is not only a voice generator. It can be used for natural speech, multi-character dialogue, ambience, music direction, and sound effects, which makes it useful for creators and marketing teams that need audio for short videos, ads, demos, games, podcasts, and cinematic scenes.
What is Seed Audio 1.0?
Seed Audio 1.0 is an AI text-to-audio model from ByteDance Seed. In practical terms, you describe the audio you want, and the model generates an audio file. The prompt can be a simple narration request, a multi-speaker script, or a full sound scene with background music, room tone, ambience, and sound effects.
Public provider documentation describes Seed Audio 1.0 as supporting text prompts, optional reference audio clips, and optional image guidance. That makes it broader than a traditional text-to-speech tool because the output can be a complete sound design pass instead of only a spoken line.
Is Seed Audio 1.0 just text-to-speech?
No. Seed Audio 1.0 can generate speech, so it can cover text-to-speech use cases, but the better category is text-to-audio. Traditional TTS usually reads a script in one voice. Seed Audio 1.0 can generate the voice plus the surrounding sound: music, environmental noise, sound effects, timing, pauses, and dialogue between multiple speakers.
That distinction matters for video creators. A product ad, game cutscene, trailer, or audio drama often needs more than a clean narration track. It needs the world around the voice: footsteps, room tone, crowd noise, music swells, product clicks, rain, traffic, impact sounds, or a quiet fade at the end.
What can Seed Audio 1.0 generate?
- Narration and voiceover for ads, explainers, product videos, and short-form content.
- Multi-speaker dialogue with named roles, different vocal traits, emotional delivery, and pacing.
- Audio scenes that combine voice, ambience, background music, and sound effects in one generation.
- Reference-guided voices when you provide authorized audio clips for style or voice guidance.
- Image-guided audio when a single image should influence mood, setting, or delivery.
- Podcast-style intros, trailers, game dialogue, audio drama, cinematic moments, and social ad audio tests.
What inputs does Seed Audio 1.0 support?
In OpenCake, start with a prompt and attach supported references when the model route exposes them. Provider docs for Seed Audio 1.0 describe three main guidance paths: text-only prompting, up to three reference audio clips, or a single reference image. Some routes also expose output controls such as format, sample rate, speed, volume, and pitch.
| Input | Use it for | Practical note |
|---|---|---|
| Text prompt | Narration, dialogue, full audio scenes, sound effects, ambience, music direction | Write like a mini audio script, not a vague mood board. |
| Reference audio | Voice style, speaker consistency, audio style guidance | Use only voices and recordings you have the right to use. |
| Reference image | Mood, scene context, visual-to-audio inspiration | Useful when the audio should match a product photo, poster, frame, or scene image. |
How long can Seed Audio 1.0 generate?
Public guides commonly describe Seed Audio 1.0 as generating up to about two minutes per pass. In practice, the exact limit may depend on the provider route, product settings, and current model availability. For social ads and short creative tests, shorter generations are usually easier to control.
If you need a longer piece, work in scenes. Generate a strong intro, save it, then create the next section with matching voice and sound direction. This gives you more control than trying to solve a long script in one pass.
Can Seed Audio 1.0 clone voices?
Seed Audio 1.0 supports reference audio guidance through some public provider routes, and those references can guide voice character or style. Treat that as a permission-sensitive workflow. Only use your own voice, a licensed voice, a consenting actor, or a recording you are authorized to use.
For best results, use clean reference clips with one speaker, minimal background noise, steady mic level, and a consistent emotional tone. If the reference is noisy, crowded, or full of music, the model has less clean signal to follow.
How do you prompt Seed Audio 1.0?
Good Seed Audio prompts read like compact audio direction. Name the setting, the continuous background sound, each speaker, each speaker's voice traits, the emotion, the exact dialogue, and the sound effects that should happen at specific moments.
- Start with the format: radio ad, product demo voiceover, podcast intro, game cutscene, trailer, audio drama, or ambience loop.
- Describe the sound bed: quiet studio room tone, busy coffee shop, nighttime street, soft synth pad, rain against windows, crowd noise, or clean silence.
- Define speakers clearly: name, age range, accent if relevant, voice texture, pace, and emotional state.
- Write exact dialogue in quotes when the words matter.
- Add only the sound effects that support the scene. Too many effects can make the output messy.
- End with a clear finish: music fades, room tone continues, hard cut to silence, final product click, or crowd swell.
Live Seed Audio 1.0 example
Here is a real Seed Audio 1.0 output generated in OpenCake from a prompt for a short smart fitness app audio ad.
More Seed Audio 1.0 prompt examples
- Create a 20-second skincare product ad voiceover. Bright bathroom ambience, clean morning light feeling, soft upbeat music under the voice. Female speaker, late 20s, warm confident delivery, natural pace: "My skin used to feel dry by lunch. This serum keeps it calm, smooth, and ready for the day." Add a soft bottle cap click at the end, then fade music.
- Create a short podcast intro. Quiet studio room tone, subtle bass pulse, confident male host voice, conversational pace: "Welcome back to the Growth Table, where we break down the campaigns, tools, and creative tests that actually move revenue." End with a clean two-note audio logo.
- Generate a cinematic game shopkeeper scene. Warm wooden room, faint fire crackle, distant market outside. Shopkeeper, elderly woman, dry humor, textured voice: "If you are buying that sword, I hope you are also buying better judgment." Add a tiny coin clink and soft laugh.
- Create audio for a silent product launch clip. Minimal electronic music, glossy studio feel, soft mechanical whir, one clean product click at second five, low impact hit at the reveal, no spoken words.
Where does Seed Audio 1.0 fit in an OpenCake workflow?
Seed Audio 1.0 is useful when the visual asset is already strong but the sound is missing, weak, or generic. In OpenCake, a practical workflow is to create or upload a product video, remove unwanted audio if needed, generate a new Seed Audio track, save both assets to the Library, then continue with captions, compression, or another edit.
It also works as an audio-first ideation tool. Generate a strong voiceover, ad hook, trailer bed, or dialogue scene first, then use that audio direction to plan the video, captions, and visual references. This is especially useful for UGC ads and product demos where the spoken hook drives the whole creative.
What is Seed Audio 1.0 best for?
- Product ad voiceovers where music and small product sounds should feel integrated.
- UGC-style ad scripts that need natural spoken delivery before captions are added.
- Silent AI video clips that need a complete sound bed.
- Podcast intros, segment bumpers, trailer lines, and short audio branding tests.
- Game dialogue, audio drama, and character scenes with multiple speakers.
- Fast creative testing when you want to compare several hooks, tones, or endings.
What are the limits?
Seed Audio 1.0 is still a generative model, so you should expect iteration. It may overdo background effects, misjudge pacing, make a voice too theatrical, or mix music louder than you want. Shorter, clearer prompts are easier to control than long prompts packed with competing sound directions.
For commercial work, also check rights. Do not upload voices, songs, brand audio, or copyrighted recordings unless you have permission. When a voice matters, keep reference clips authorized, clean, short, and single-speaker.
Seed Audio 1.0 FAQ
What is Seed Audio 1.0? Seed Audio 1.0 is ByteDance Seed's AI audio model for generating speech, dialogue, ambience, music direction, and sound effects from prompts and supported references.
Who made Seed Audio 1.0? Seed Audio 1.0 comes from ByteDance Seed, the same broader AI model ecosystem behind Seedance and Seedream models.
Is Seed Audio 1.0 available in OpenCake? Yes. Seed Audio 1.0 is available in OpenCake AI Models as the first dedicated audio model in the platform.
Does Seed Audio 1.0 make music? It can include music direction as part of an audio scene. For best results, describe the role of the music, such as soft upbeat bed, tense low strings, cheerful jingle, or minimal electronic pulse.
Does Seed Audio 1.0 make sound effects? Yes, it can generate sound effects as part of a scene. Name concrete sounds such as footsteps, bottle cap click, crowd swell, rain on glass, keyboard taps, door chime, or soft impact hit.
Can Seed Audio 1.0 generate multiple speakers? Yes, public guides describe multi-character dialogue. Label speakers clearly and give each one distinct voice traits, emotion, and pacing.
Should I use Seed Audio 1.0 before or after video generation? Use it after video when you need to replace or improve sound on a visual clip. Use it before video when the script, voiceover, or audio hook should drive the whole creative concept.
Seed Audio 1.0 is available now in OpenCake
OpenCake now supports Seed Audio 1.0 in AI Models. Open the dashboard, choose Seed Audio 1.0, write a prompt, attach supported audio or image references when needed, generate the audio, and save the result to your Library for ads, videos, captions, and future creative workflows.