The longest one generation may run
A clip ceiling is the longest single generation a channel will produce. It has no effect on the rate per second and decides how many generations and joins a finished episode needs, which is a schedule cost rather than a bill. As of 2026-09-12.
| Channel | What is published | Read from |
|---|---|---|
| HeyGen | Up to thirty minutes below one tier, sixty on it, unlimited above | The pricing page |
| SceneMixer | Thirty seconds on two model families, fifteen on two others | The price list, per tier |
| Wan | Thirty seconds for one generation | The model documentation |
| Five reseller channels here | Nothing on the page carrying the rate | Their own price pages |
Inclusion rule. Channels stating a maximum length for one generation on a page a buyer can open, plus one row for the group that omits it, because the omission is a class habit rather than an individual choice. Order. Channels stating a ceiling first, then the group that does not.
1It multiplies the piece count, not the price
Fifteen minutes of episode is about thirty generations at a thirty-second ceiling and about sixty at fifteen. The footage costs the same either way. What doubles is the number of boundaries where a face can drift or a light can jump.
2It is a writing constraint as much as a technical one
At fifteen seconds a segment holds a beat. At thirty it can hold a small scene with a turn in it, which removes a boundary and the risk that boundary carried. A shot list written for one ceiling and generated against the other either wastes headroom or does not fit.
3Resellers leave it to the maker
Every channel here stating a ceiling either made the model or wraps one in a pipeline of its own. The resold families do have published ceilings, in the maker's own documentation, and a buyer has to leave the shop to find them.
4A ceiling in minutes is a different product
Where the figure is stated in minutes rather than seconds, the tool is rendering long continuous deliverables rather than shots to be cut together. Converting the two into the same unit would make the rows look comparable without making them comparable.
5It is also a retake multiplier
A longer ceiling makes each discarded attempt more expensive, because more seconds are thrown away with it. Thirty seconds at twenty cents is six dollars, and a one-in-three rejection rate means nine dollars per usable thirty seconds.
So a long ceiling cuts the number of joins and raises the cost of a bad generation. Which of those dominates depends on the rejection rate, and that is a figure a production measures rather than reads.
6Pages these figures were read from
A definition entry: what the term means, and the figures vendors put in public about it, each figure read on 2026-09-12. Related: Wholesale floor, An unrated cell.