✍️ Prompts · Sound

How to Prompt Sound in AI Video: Which Models Make Audio

📅 Oct 2026·⏱ 4 min read·PulseMotionHub Team

Silent AI video is easy to ignore. Sound makes a clip feel real, and several models on PulseMotionHub now generate it alongside the picture. But audio needs prompting too: if you do not describe it, you get whatever the model guesses. Here is which models make sound, what they cost, and how to write for the ears.

Key takeaways

Veo 3.1, Veo 3.1 Fast, Seedance (1.5, 2.0 Fast, 2.5) and Wan 3.0 generate audio with the video.
The Kling and MiniMax models on our platform are silent.
Describe sounds as you would images: what, where, how loud.
You can switch audio off and add your own music or effects in an editor.

Which Models Generate Sound

Model	Sound	Credits (clip)	Plan
Veo 3.1	Yes, with dialogue and effects	16 (8s)	Pro and Studio
Veo 3.1 Fast	Yes	8 (8s)	Pro and Studio
Seedance 2.0 Fast	Yes	5 (5s) / 10 (10s)	Pro and Studio
Seedance 1.5 Pro	Yes	3 (5s) / 6 (10s)	Pro and Studio
Seedance 2.5	Yes, optional	5 to 65	Pro and Studio
Wan 3.0	Yes, optional	2 to 7	All plans
Kling, MiniMax, Hailuo Live	No	From 1	See each model

For clips without sound, add music from AI Music (5 credits per song) or your own library. Read more in AI video generators with native audio.

Think in Layers: Ambience, Effects, Speech, Music

Layer	What it is	Example words
Ambience	The constant background	distant traffic, wind in trees, cafe murmur
Sound effects	Specific actions	a door creaks, glass clinks, footsteps on gravel
Speech	Voices	a man says “good morning” softly
Music	Score or song	soft piano, tense strings

Naming at least the ambience and one effect gives the model something to anchor on.

Prompt Examples

A barista pours steamed milk into a latte in a quiet cafe. Soft clink of ceramic, the hiss of the milk, low background chatter. Slow push-in. Warm morning light. A hiker crosses a wooden bridge over a rushing stream in a forest. Water roars, birds sing, boots thud on the planks. Slow tracking shot. Misty green light. A rainy night street. Steady rain, distant thunder, a car passes through puddles with a soft splash. Static camera. Neon reflections. A grandmother smiles at the camera and says softly, “Welcome home.” Gentle room tone, a clock ticking. Static shot, warm light.

Tips for Better Audio

Describe the sound near the action it belongs to, in the same sentence.

Name the space. “In a large empty hall” sounds different from “in a small car”.

Keep speech short and in quotation marks. Long speeches are less reliable.

Do not overload. Three or four sounds are plenty.

Test with sound off and on. A good picture with mismatched audio can be fixed in an editor; the reverse is harder.

Switch audio off in the tool when you plan to add your own music.

Hear it for yourself.
A 5-second Seedance 1.5 Pro clip with sound is 3 credits.

Limits

Generated audio is a starting point. It may not match what you imagine.
Speech can be unreliable, especially for long lines or specific accents.
Music from the model is not a finished score. Use AI Music or a licensed track.
Do not clone or imitate a real person’s voice, and follow our content policy.

For the models themselves, see Veo 3.1 with audio, Seedance 1.5 Pro, Seedance 2.5 and Wan 3.0.

Frequently Asked Questions

Which AI video models make sound on PulseMotionHub?

Veo 3.1, Veo 3.1 Fast, Seedance 1.5 Pro, Seedance 2.0 Fast, Seedance 2.5 and Wan 3.0 generate audio with the video. Kling, MiniMax and Hailuo Live are silent.

How do I prompt sound?

Describe the ambience, one or two specific effects and any short speech in quotation marks, near the action they belong to.

Can I turn the audio off?

Yes. The tools let you switch audio off, so you can add your own music or effects in an editor.

Which sound-capable model is cheapest?

Wan 3.0 Draft starts at 2 credits for 5 seconds on every plan. Among the Pro and Studio models, Seedance 1.5 Pro is 3 credits for 5 seconds.

Can I add music instead?

Yes. AI Music makes a song for 5 credits, or you can use your own licensed music in an editor.

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