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Published video-model weights, licences and hardware notes

MAGI-1 defaults to 720x720 for speed

The repository states that the default resolution for the 4.5B model is set to 720x720, chosen to accelerate inference, and describes arbitrary resolutions as supported. The value is a configuration rather than a limit. As of 2026-09-22.

MAGI-1 in the resolution column, as publishedA default is a choice somebody made for speed, and recording it as a capability would misstate both what the model does and what it can do.Output size720 x 720 as the 4.5Bdefaultsizes the memoryfigureMemory it sizesH100 or H800 x 8 forthe 24Bheld over thismany framesClip lengthNo ceiling recordedA default, and a claim beyond itSet for speed; arbitrary resolutions described as supported
Fig. 1 A square default picked for throughput, with the wider claim left unquantified.
What the repositories actually stateFilled where the repository states something, hollow where it does not. A blank is not an inference.What the repositories actually stateWhat the pages stateWhat the pagesstateResolution, in the vendor's own wor…Resolution, in the vendor's own wordsResolution, in the vendor's own words — What the pages state: 720 x 720 as the 4.5B defaultThe detail published beside itThe detail published beside it — What the pages state: Set for speed; arbitrary resolutions described as supportedHardware, from the same pagesHardware, from the same pages — What the pages state: H100 or H800 x 8 for the 24BLength, from the same pagesLength, from the same pages — What the pages state: No ceiling recorded
Fig. 2 Filled where the repository states something, hollow where it does not. A blank is not an inference.
MAGI-1 in the resolution column, with the columns that qualify it. Read from github.com/SandAI-org on 2026-09-22.
ColumnWhat the pages state
Resolution, in the vendor's own words720 x 720 as the 4.5B default
The detail published beside itSet for speed; arbitrary resolutions described as supported
Hardware, from the same pagesH100 or H800 x 8 for the 24B
Length, from the same pagesNo ceiling recorded

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.

1Default and supported are two values in one sentence

720x720 is what the code does if nobody intervenes. Arbitrary resolutions is what the repository says the model can do. The first is precise and the second is unbounded.

The register keeps both because dropping either would mislead. Recording only the default would understate the release; recording only the claim would leave the row empty of anything checkable.

2Square is a deliberate shape

Choosing 720x720 rather than a portrait or landscape frame keeps the pixel count down while staying at a recognisable height, which is consistent with a default set for speed.

For a production that needs vertical output, the default is not the configuration it will run, so none of the published hardware figures describe its actual case.

3The memory figures attach to the default

At least 24GB for the 4.5B and at least 12GB for a distilled fp8 build are stated against this release, and the default is the configuration in view.

An arbitrary resolution therefore has no memory figure. The supported claim widens what the model will accept and does not extend the numbers a reader can plan with.

  • Resolution
    The default resolution for the 4.5B model is set to 720x720a default chosen to accelerate inferenceSandAI-org, MAGI-1 repository / recorded 2026-09-22
  • Hardware
    For 4.5B models, any machine with at least 24GB of GPU memory is sufficient, and a distilled fp8 configuration works on GPUs with at least 12GBa floor for the model and a lower one for a buildSandAI-org, MAGI-1 repository / recorded 2026-09-22

4Sources

Output sizes above appear on github.com/SandAI-org, checked 2026-09-22. The full entry is at this family's page; what counts as a stated size is on resolution. Nearby: 720P at 16FPS, Length instead of size.