Step-Video-T2V stays above 72GB in every setting
The repository states 78.55 GB peak at 768px768px204f, 77.64 GB at 544px992px204f and 72.48 GB at 544px992px136f, all at batch size one. Every published configuration sits above seventy gigabytes. As of 2026-09-22.
| Column | What the pages state |
|---|---|
| Hardware, in the vendor's own words | 78.55 GB peak at 768px768px204f |
| The detail published beside it | 77.64 GB and 72.48 GB at two smaller settings |
| Resolution, from the same pages | 768px768px and 544px992px |
| Length, from the same pages | Up to 204 frames |
Inclusion rule. The value this page is about, the detail the vendor attached to it, and the two columns that change how it should be read. A column the vendor left empty keeps its row and says so. Order. This column first, then its detail, then the two columns that qualify it.
1A narrow spread is a planning fact
Dropping from 204 frames at 768px768px to 136 frames at 544px992px saves about six gigabytes out of seventy-eight. For a reader hoping to fit the model on a smaller card by shortening the clip, that is the answer.
Elsewhere in the register the same kind of change moves a figure by a factor of three. Here the weights dominate so completely that the settings hardly matter.
2Batch size one is stated, which is rare
Most memory figures in the register leave batch size implicit. Stating it removes the commonest hidden variable, and it also means the figures are the lowest the vendor could honestly publish.
Anyone planning throughput rather than feasibility should read the numbers as a per-stream cost, with no batching headroom included.
3Frames without a frame rate
The ceiling is given as up to 204 frames and no frame rate is attached anywhere, so the clip length in seconds is not something this row settles.
That is why the register keeps length in the unit the vendor chose. Converting 204 frames into seconds would require a frame rate the repository never published.
- Hardware78.55 GB peak GPU memory at 768px768px204f, 77.64 GB at 544px992px204f and 72.48 GB at 544px992px136fstated per configuration at batch size one
- LengthVideos up to 204 framesin frames, with no frame rate attached
4Sources
Every figure above is the vendor's own, taken from github.com/stepfun-ai on 2026-09-22 with nothing measured here. The rest of the release is on its family entry, the whole column is on hardware, and all memory figures together are on requirements. Nearby: One card or four, A stopwatch, not a floor.