AI video models: where audio is already in the price, and where it is a separate line
which ai video models include audio in the price
Audio is already in the price on six models: Veo-3.1 Fast (1,500 credits, 8s), Veo-3.1 Pro (2,000, 8s), Hailuo H3 (3,375, 5s), Kling v2.6 (3,500, 5s), Seedance 2 Fast (6,200, 5s), Seedance 2.0 (7,750, 5s). Seedance 1.5 and Kling V3 list audio as a separate variant, "audio off" and "+ audio", and the silent variant is priced at nearly half.
How this works
The six models priced with sound included
On these six, the credit figure in the Doitong price list is quoted for a clip that comes back with audio. Sound is part of what that one price covers. Veo-3.1 Fast: 1,500 credits, 8 seconds, with audio. Veo-3.1 Pro: 2,000 credits, 8 seconds, with audio. Hailuo H3: 3,375 credits, 768p, 5 seconds, with audio. Kling v2.6: 3,500 credits, 5 seconds, with audio. Seedance 2 Fast: 6,200 credits, 720p, 5 seconds, with audio. Seedance 2.0: 7,750 credits, 720p, 5 seconds, with audio. Veo-3.1 Fast is the lowest price of the six and also the longest clip in the group, 8 seconds against 5 for everything except Veo-3.1 Pro. If the requirement is simply video priced with sound, Veo-3.1 Fast is listed at 1,500 credits.
Where audio is a separate paid variant: Seedance 1.5 and Kling V3
On these two, audio appears in the price list as a choice between variants. Each is listed twice, once as "audio off" and once as "+ audio", and the audio-off variant is priced at close to half the audio variant. That pricing split is worth knowing before you submit. The cheaper of the two variants is the one defined as producing no sound, and the plus-audio variant carries its own separate price, so producing an audio version after a silent one means paying that second variant's price on top of what was already spent. The base Seedance 1.5 listing in the catalogue is 2,500 credits at 720p. So the check is short: on Seedance 1.5 and Kling V3, look at which variant is selected. On the six models in the previous section, audio is listed as part of the single quoted price.
Cost per second, once duration is taken into account
Comparing 1,500 credits against 7,750 hides the fact that the clips are not the same length. Divide by duration and the ordering changes shape. Veo-3.1 Fast: 1,500 over 8 seconds = 187.5 credits per second. Veo-3.1 Pro: 2,000 over 8 seconds = 250 credits per second. Hailuo H3: 3,375 over 5 seconds = 675 credits per second. Kling v2.6: 3,500 over 5 seconds = 700 credits per second. Seedance 2 Fast: 6,200 over 5 seconds = 1,240 credits per second. Seedance 2.0: 7,750 over 5 seconds = 1,550 credits per second. The spread between the cheapest and the most expensive second of audio-bearing video is 8.3x. Veo-3.1 Pro costs a third more per clip than Fast but delivers the same 8 seconds, so its premium is 62.5 credits per second. Everything after Veo-3.1 Pro sits at 3.6x the per-second cost of Veo-3.1 Fast or higher.
The numbers, in full
| Model | Credits | Duration | Other | Credits/sec | 30,000 pack | 100,000 pack | 300,000 pack |
|---|---|---|---|---|---|---|---|
| Veo-3.1 Fast | 1,500 | 8 s | with audio | 187.5 | $1.00 | $0.60 | $0.50 |
| Veo-3.1 Pro | 2,000 | 8 s | with audio | 250 | $1.33 | $0.80 | $0.67 |
| Hailuo H3 | 3,375 | 5 s | 768p, with audio | 675 | $2.25 | $1.35 | $1.12 |
| Kling v2.6 | 3,500 | 5 s | with audio | 700 | $2.33 | $1.40 | $1.17 |
| Seedance 2 Fast | 6,200 | 5 s | 720p, with audio | 1,240 | $4.13 | $2.48 | $2.07 |
| Seedance 2.0 | 7,750 | 5 s | 720p, with audio | 1,550 | $5.16 | $3.10 | $2.58 |
| Model | How it is priced |
|---|---|
| Seedance 1.5 | Separate "audio off" and "+ audio" variants; the audio-off variant is priced at nearly half. Base catalogue listing: 2,500 credits, 720p. |
| Kling V3 | Separate "audio off" and "+ audio" variants; the audio-off variant is priced at nearly half. |
| Pack | Price | Per 1,000 credits |
|---|---|---|
| 30,000 | $19.99 | ≈ $0.67 |
| 100,000 | $39.99 | ≈ $0.40 |
| 300,000 | $99.99 | ≈ $0.33 |
| Model | Credits | What the price covers |
|---|---|---|
| Grok Video | 350 | 480p, 1 s (350 cr/s at 480p, 450 cr/s at 720p) |
| Sora-2 Pro | 751 | 720p, 5 s |
| Seedance 1.0 | 1,200 | lite 720p, 5 s |
| Luma Fast | 1,200 | 720p, 5 s |
| Hailuo 2.3 | 1,400 | 768p, 6 s |
| Vidu Q1 | 2,000 | 5 s ($1.33 / $0.80 / $0.67 by pack) |
| Wan AI | 2,500 | 720p, 5 s ($1.67 / $1.00 / $0.83 by pack) |
| Seedance 1.5 | 2,500 | 720p |
| Sora-2 Lite | 2,500 | 5 s |
| Kling O1 | 2,750 | 5 s |
| Runway Gen4 | 2,800 | 5 s |
| Luma Pro | 3,550 | 720p, 5 s |
Credit packs: 30,000 for $19.99, 100,000 for $39.99, 300,000 for $99.99. Prices above are per generation at each pack rate.
The detail
The same six in dollars, at each credit pack
Credits are bought in three packs, and the pack changes what a generation costs. 30,000 credits cost $19.99, 100,000 cost $39.99, 300,000 cost $99.99 — roughly $0.67, $0.40 and $0.33 per 1,000 credits. One generation on the 100,000-credit pack: Veo-3.1 Fast $0.60, Veo-3.1 Pro $0.80, Hailuo H3 $1.35, Kling v2.6 $1.40, Seedance 2 Fast $2.48, Seedance 2.0 $3.10. The same generations on the 300,000-credit pack: $0.50, $0.67, $1.12, $1.17, $2.07, $2.58. On the 30,000-credit pack they are $1.00, $1.33, $2.25, $2.33, $4.13 and $5.16. Per second on the 100,000-credit pack that works out to about $0.075 for Veo-3.1 Fast, $0.10 for Veo-3.1 Pro, $0.27 for Hailuo H3, $0.28 for Kling v2.6, $0.50 for Seedance 2 Fast and $0.62 for Seedance 2.0. Pack choice moves the bill by roughly half between the smallest and the largest pack, a larger effect than the gap between Veo-3.1 Fast and Veo-3.1 Pro. Pick the pack first.
Duration and input limits worth checking before you spend
Two other things shape the result and have nothing to do with the audio line. Clip length is fixed per model and it varies. Veo-3.1 Fast and Pro are quoted at 8 seconds. 12 of the 17 listed models at 5. Hailuo 2.3 is 6 seconds at 768p for 1,400 credits. Grok Video is billed per second instead: 350 credits per second at 480p and 450 credits per second at 720p. A five-second result on a five-second model is the length that was priced. Seedance 2 carries two constraints worth knowing before spending 6,200 or 7,750 credits. All three Seedance 2 variants — Mini, Fast and 2.0 — are marked as not supporting video input, so existing footage cannot be fed in. And Seedance 2 works in 16:9, so a landscape frame is what it produces.
Questions people ask next
What is the cheapest model priced with audio included?
Veo-3.1 Fast, at 1,500 credits. It is the lowest price in the audio-included group and also the longest clip at 8 seconds, matched only by Veo-3.1 Pro at 2,000 credits. That is 187.5 credits per second of finished audio-bearing video, or $0.60 per generation on the 100,000-credit pack and $0.50 on the 300,000-credit pack.
Why did my generation come back silent?
One explanation the price list covers directly: on Seedance 1.5 and Kling V3, audio is a separate variant. Each is listed twice, as "audio off" and as "+ audio", and the audio-off variant is priced at close to half. If the cheaper variant was selected, the cheaper variant is the one defined as producing no sound. On those two models, check which variant is set before submitting.
Do I pay extra for sound on Veo-3.1?
Both Veo-3.1 Fast (1,500 credits) and Veo-3.1 Pro (2,000 credits) are listed at a single price for 8 seconds with audio, so sound is inside that quoted figure. The same single-line pricing applies to Hailuo H3 (3,375), Kling v2.6 (3,500), Seedance 2 Fast (6,200) and Seedance 2.0 (7,750): one price, audio included in what it covers.
How much does audio cost on Seedance 1.5 and Kling V3?
Both are listed as two variants, one with audio off and one with audio added, and the audio-off variant is priced at close to half the audio variant. The base Seedance 1.5 catalogue listing is 2,500 credits at 720p. The takeaway is directional rather than a single number: on these two models the cheaper option is cheaper specifically because it is the variant without sound.
Can I get vertical video with sound from Seedance 2?
Seedance 2 works in 16:9, so the frame it produces is landscape. Seedance 2 Fast (6,200 credits, $2.48 on the 100,000-credit pack) and Seedance 2.0 (7,750 credits, $3.10) are both priced with audio included, but in that aspect. Check the aspect requirement of the brief against that 16:9 constraint before spending 6,200 credits.
Can I feed an existing video into Seedance 2?
No. All three Seedance 2 variants — Mini, Fast and 2.0 — are marked as not supporting video input. Existing footage cannot be supplied to them, so plan any Seedance 2 clip as a generation from a prompt rather than as a pass over material you already have.
Why is my clip five seconds long?
because 12 of the 17 listed models are priced for a 5-second clip. Veo-3.1 Fast and Pro are priced for 8 seconds. Hailuo 2.3 is 6 seconds at 768p for 1,400 credits. Grok Video is billed per second instead, 350 credits per second at 480p and 450 credits per second at 720p, so its length tracks the spend. Check the duration in the price row before assuming the length is adjustable.
What does one audio-included generation cost in dollars?
It depends on the credit pack: 30,000 credits for $19.99, 100,000 for $39.99, 300,000 for $99.99. On the 100,000-credit pack, Veo-3.1 Fast is $0.60, Veo-3.1 Pro $0.80, Hailuo H3 $1.35, Kling v2.6 $1.40, Seedance 2 Fast $2.48, Seedance 2.0 $3.10. On the 300,000-credit pack the same six are $0.50, $0.67, $1.12, $1.17, $2.07 and $2.58.
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