At 1080p, Veo 3.1 Lite generates 8 seconds of video with sound for 135 credits. Kling 3.0 generates 5 seconds at the same resolution for 510. Same shelf, same credits, 3.8× apart — because on most models sound is a surcharge billed by the second, and on Veo it is included in a per-clip price.
Four models on this shelf generate sound natively: Veo 3.1, Kling 3.0, Kling 2.6 and Seedance 1.5 Pro. Those are the only four our rate table prices with sound; for the rest there is no audio rate to buy here, so a soundtrack is an editing step. Turning sound on roughly doubles the bill on Kling 2.6 and Seedance 1.5 Pro, and adds 42–50% on Kling 3.0. Veo is the outlier: it prices per clip, so its 8-second take costs the same as its 5-second one. Rates read from our live rate table on September 2, 2026.
What video with sound actually costs
Every credit figure for video with sound below came from the live rate table on 2026-09-02, at 5 seconds, comparing each model against itself at the same resolution. That last part matters: comparing a silent 720p clip against a 1080p clip with sound makes the premium look far larger than it is.
| Model | Native sound | Resolution | 5s silent | 5s with sound | Sound premium |
|---|---|---|---|---|---|
| Veo 3.1 Lite | yes | 1080p | n/a | 135 (8s) | included |
| Seedance 1.5 Pro | yes | 480p | 35 | 70 | +100% |
| Seedance 1.5 Pro | yes | 1080p | 145 | 285 | +97% |
| Kling 3.0 | yes | 720p | 265 | 375 | +42% |
| Kling 3.0 | yes | 1080p | 340 | 510 | +50% |
| Kling 2.6 | yes | fixed | 210 | 415 | +98% |
| Kling 3.0 Turbo | no audio row | 720p | 340 | — | — |
| Seedance 2.5 | no audio row | 480p | 525 | — | — |
| LTX Fast | no audio row | 720p | 115 | — | — |
| Wan 2.7 | no audio row | 720p | 300 | — | — |
| MiniMax H3 | no audio row | fixed 2K | 395 | — | — |
The bottom five rows are not "silent models" in the abstract. They are models our rate table carries at a single price with no separate audio rate, so there is no audio surcharge to pay here — what those models do on other platforms is a different question.
Which models generate video with sound
Four models on this shelf generate video with sound natively, and each vendor describes what that means differently.
- Veo 3.1 produces synchronised audio as part of the generation; Google documents the tier and per-video pricing in the Gemini API video docs. Our rate table carries no silent price for it, so there is no cheaper muted rate to pick.
- Kling 3.0 is sold as "Native Audio & Multi-Shot Storytelling" and bills audio as a separate rate, so you decide per clip.
- Kling 2.6 advertises "synchronized speech, ambient sound, and motion timing" — the most explicit dialogue claim of the four.
- Seedance 1.5 Pro is described by ByteDance as an "audio-video generation model … with synchronized audio, and multilingual dialogue".
We have not run a controlled listening comparison between them, so this page ranks what video with sound costs and what each vendor claims, not which one sounds better. ByteDance publishes the model family behind two of these rows on its Seed site.
What the premium actually buys
On Kling 2.6 and Seedance 1.5 Pro, asking for video with sound roughly doubles the clip. That is the cleanest way to think about it: you are buying the same picture twice to get audio with it. On Kling 3.0 the premium is milder — 42% at 720p, 50% at 1080p. Kling 3.0 and Seedance 1.5 Pro are the two models here carrying both a silent and an audio rate at more than one resolution, so on either of them you can generate the same shot twice and compare the bills directly.
The cheapest video with sound at each resolution
"Cheapest" has two answers here, and they are different models.
Cheapest of all: Seedance 1.5 Pro at 480p, 70 credits with sound on. Nothing on the shelf is cheaper, and it is the right way to hear what generated audio does before spending more.
Cheapest at 1080p: Veo 3.1 Lite at 135 credits. It bills per video rather than per second, so its 8-second clip and its 5-second clip carry the same price. Ask for the full 8 seconds.
| Model | Clip you get for the credits | Credits |
|---|---|---|
| Seedance 1.5 Pro | 5s, 480p, audio on | 70 |
| Veo 3.1 Lite | 8s, 1080p, audio included | 135 |
| Seedance 1.5 Pro | 5s, 1080p, audio on | 285 |
| Kling 2.6 | 5s, audio on | 415 |
| Kling 3.0 | 5s, 1080p, audio on | 510 |
At 1080p, Veo delivers 60% more footage than the Kling 3.0 row for a quarter of the credits. The trade is granularity: our rate table carries no silent price for Veo, so there is no cheaper muted take to buy here, and because it is billed per video, asking for a shorter clip does not lower the bill.
Why per-clip pricing changes the maths
Every other model here bills video with sound by the second, so the premium scales with the length of the take. Veo does not, which is why it wins by more at 8 seconds than at 5 — and why a short clip is the one case where the gap narrows.
When video with sound is not worth paying for
Generated audio arrives welded to the picture. If the sound is wrong, the fix is another generation at the full rate — the generator has no audio-only re-run. That asymmetry is why the price of video with sound is worth weighing before you switch it on:
- Ambient and foley — the strongest argument for generating, because matching footsteps, rain or engine noise to what is on screen is the slowest thing to do by hand.
- Music — the weakest, because a track laid in an editor can be swapped afterwards without regenerating the video.
- Dialogue — only worth the premium when the mouth is on screen, since that is where sync has to come from the model rather than the edit.
We have not tested how good any of these sound, so read that list as an argument about what is expensive to redo, not about output quality.
For anything destined for a timeline where you will do a sound pass anyway, the silent rate is the right buy. Generating video with sound and then replacing that sound means you paid the premium twice.
How to pick a model for video with sound
- Cheapest, and you want the longest clip — Veo 3.1 Lite at 135 credits for 8 seconds at 1080p.
- You want to A/B silent against sound on the same shot — Kling 3.0 or Seedance 1.5 Pro; both carry separate silent and audio rates at more than one resolution.
- On-screen dialogue — Kling 2.6 makes the most specific speech claim, at 415 credits for 5 seconds.
- Cheapest possible test of generated audio — Seedance 1.5 Pro at 480p, 70 credits with sound on. That is the lowest-cost way to hear what any of these models do.
All four run through the same generator on the same credits, so hearing the difference between them costs one prompt each — see what the plans include, or run the first tests on the welcome credits. Every rate for video with sound on this page was read on September 2, 2026. If sound is not what you are optimising for, the Seedance 2.5 alternatives page ranks the same shelf on price and clip length, and images work out an order of magnitude cheaper.
FAQ
Which AI video generator with sound is cheapest?
Veo 3.1 Lite, at 135 credits for an 8-second 1080p clip with audio included. The next cheapest is Seedance 1.5 Pro at 70 credits for 5 seconds, but that is 480p; at 1080p it costs 285.
Does video with sound cost extra?
On three of the four models, yes. Kling 2.6 and Seedance 1.5 Pro roughly double when sound is on; Kling 3.0 adds 42% at 720p and 50% at 1080p. Veo 3.1 is priced with audio included, so there is no separate silent rate to compare against.
Can I generate video with sound for free?
Signed-out visitors can generate video on the free engine, and new accounts get welcome credits plus daily check-in credits, which is enough to try Seedance 1.5 Pro with sound at 480p several times.
Why do some models have no video with sound option?
Our rate table carries a single price for LTX Fast, Wan 2.7, MiniMax H3, Kling 3.0 Turbo and the Seedance 2 family, with no separate audio row — so on this site they carry no audio surcharge. That is a statement about what we sell, not a claim about what those models can do elsewhere.
Is generated audio good enough to publish?
That depends on the use. We have not run a controlled listening test across the four models that make video with sound, so we do not rank them on quality. The practical rule on this page is about cost of rework rather than fidelity: ambient sound only has to match what is visible, dialogue has to stay in sync with a mouth, and either way a wrong result means paying for the whole clip again.
What happens if the sound comes out wrong?
You regenerate the clip and pay the full rate for video with sound again; the generator offers no audio-only re-run. This is the main argument for testing at the cheapest resolution first, then re-running the take you like at the resolution you need.
