Open-Sora names 256px and 768px as supported
The repository states that the 11B model supports 256px and 768px resolution. It is a pair of supported sizes rather than one output, and only the larger of the two has a memory figure beside it. As of 2026-09-22.
| Column | What the pages state |
|---|---|
| Resolution, in the vendor's own words | 256px and 768px |
| The detail published beside it | The pair the 11B model is stated to support |
| Hardware, from the same pages | 60.3GB peak at 768px on one GPU |
| Length, from the same pages | num_frames of 4k+1, under 129 |
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.
1Supported is a stronger word than stated
Most resolution values in the register are descriptions of what a release does. This one is a claim about what it accepts, which is a wider statement and a more useful one for a pipeline.
The wording is the vendor's own and the register keeps it. A supported list implies choice; an output figure implies a single behaviour.
2The small size is the interesting one and the unmeasured one
60.3GB is stated at 768px on one GPU and 44.3GB across four. Nothing is stated at 256px, which is the size somebody with a smaller card would reach for first.
That is the reverse of the usual omission. Vendors normally document the cheap configuration and leave the expensive one implied.
3Frames are a rule rather than a size
The repository writes the length constraint as candidate values of 4k+1 under 129, which is what the code enforces rather than a clip length. Combined with two resolutions, the output space is described by rules.
That is a developer's documentation and it is precise. It also means the register cannot record a single output specification for this release, only the boundaries of one.
- ResolutionThe 11B model supports 256px and 768px resolutionthe pair the repository names
- LengthCandidate values for num_frames should be 4k+1 and less than 129expressed as the constraint the code enforces
4Sources
Output sizes above appear on github.com/hpcaitech, checked 2026-09-22. The full entry is at this family's page; what counts as a stated size is on resolution. Nearby: 576x1024 from training, No frame size given.