The short version, in numbers
Seedance 1.5 Pro renders 5, 8 or 12 seconds at 100, 160 and 245 credits. That is a flat 20 credits per second, and every render comes back 1080p because the model has no resolution input at all.
Kling 2.6 renders 5 or 10 seconds at 125 and 260 credits, about 25 to 26 credits per second, with 720p and 1080p priced identically. Since the lower tier gives nothing back, there is never a reason to render Kling 2.6 at anything but 1080p.
So Seedance is cheaper per second, longer at the top of its range, and simpler to price. If those were the only facts this page would end here. The reason it does not is that the two models are pointed at different jobs.
What Kling 2.6 is: the budget scene model
Kling 2.6 is Kuaishou's image-to-video model, running here as image to video: a start image plus a prompt describing the action, up to 10 seconds out.
In the UGC Vids AI model picker it sits in the b-roll and scenes group rather than the talking-actor group, labelled for budget scene work. That grouping is the practical guidance, and it is worth taking literally. Product-in-hand, unboxing, lifestyle movement and establishing shots are what it is there for. A person delivering a scripted line is not.
Pricing is flat and easy to plan against: 125 credits for 5 seconds and 260 for 10, about $1.23 and $2.55 on the $49 Starter plan, at either resolution.
Its limits are the 10-second wall and a single reference image. Ten seconds is the model's native maximum rather than a tier we chose not to sell, and one image describes one angle of your product and nothing else.
What Seedance 1.5 Pro is: 1080p at a flat 20 credits a second
Seedance 1.5 Pro is ByteDance's mid-generation video model. It takes a start image and a prompt and renders 5, 8 or 12 seconds with native audio generated in the same pass as the picture.
The ladder is 100 credits for 5 seconds, 160 for 8 and 245 for 12: about $0.98, $1.57 and $2.40 on Starter. Twelve seconds costs 245 credits against Kling 2.6's 260 for ten, so at the top of their ranges Seedance is both the longer and the cheaper render.
There is no resolution choice, which is a constraint that mostly works in your favour. You cannot accidentally buy a lower tier, and there is no premium tier to be upsold into.
Its limits: like Kling 2.6 it works from a single start image, and its dialogue is prompt-guided rather than verbatim. If the clip has to state a price, a guarantee or any claim that was signed off word for word, that belongs on a voice-driven model such as OmniHuman 1.5 or VEED Fabric 1.0, not on either of these.
Where the ten-second wall actually bites
Two seconds does not sound like a difference worth writing down until you have tried to fit a three-beat ad into ten of them. A hook, a demonstration and a payoff at a natural pace runs closer to twelve than to ten, and the alternative is cutting the payoff or rushing the demo.
Seedance 1.5 Pro's 12-second tier is the cheapest way past the 10-second mark in this price bracket, at 245 credits. Kling 2.6 has no answer to it.
Below ten seconds the wall is irrelevant, and the choice comes back to price and to what the clip is actually for.
Cost math: what one plan buys
On the $49 Starter plan and its 5,000 credits: about 50 five-second Seedance 1.5 Pro clips, 31 eight-second ones or 20 twelve-second ones. On Kling 2.6, about 40 five-second clips or 19 ten-second ones.
Per second that is 20 credits against 25 to 26, roughly a 20% gap in Seedance's favour. On a single render the difference is 25 credits, about 25 cents. Across a month of heavy testing it is a couple of extra clips. That is the honest size of it: real, but not big enough to be the thing that decides your model.
There is no per-video cap on any plan, so the only limit is the credit pool. A 5,000-credit month can be 50 Seedance clips, 40 Kling clips, or any mix.
Picking between them, job by job
- Cheapest finished 1080p clip: Seedance 1.5 Pro, at 100 credits for 5 seconds.
- Anything that needs 11 or 12 seconds: Seedance 1.5 Pro, since Kling 2.6 stops at 10.
- Product motion, unboxing inserts and establishing shots: Kling 2.6, the model our picker files under b-roll and scenes.
- A ten-second cutaway you intend to trim in the edit: Kling 2.6, at 1080p since it costs the same as 720p.
- Highest-volume concept testing on a tight balance: Seedance 1.5 Pro, at the lowest credits per second of the two.
- A scripted read where the words have to be exact: neither. Both are prompt-driven, so that job belongs on OmniHuman 1.5, VEED Fabric 1.0 or Pruna Avatar.
- Locking one specific product across a batch: neither. Both take a single reference image, so use Happy Horse 1.1, Seedance 2.0 or Kling 3.0 instead.
Verdict: Seedance 1.5 Pro on the numbers, Kling 2.6 on the brief
Seedance 1.5 Pro wins the head-to-head on every number that is directly comparable: 20 credits a second against 25 to 26, twelve seconds against ten, and 1080p on every render with no tier to get wrong. If you are only going to keep one cheap model in rotation, keep that one.
Kling 2.6 is not a consolation prize. It is what you reach for when the brief calls for footage rather than a finished clip, and the picker's b-roll grouping is telling you the same thing in fewer words. Editors choose it on purpose.
Both draw on one credit balance at UGC Vids AI, so you can render the same scene on each and put the two files side by side in a timeline before committing to either. The trial is $1 for 7 days. Cancel anytime.