Portrait 4K AI video on Sume: Omni Flash 9:16 at $0.375 a second
LTX-2.5 is reported to do portrait up to 4K. On Sume the 4K portrait option is Gemini Omni Flash 1.1 at $0.375 a second: 3 s $1.13, 10 s $3.75.
LTX-2.5 is reported to render portrait and landscape up to 4K (reported by Magic Hour, read 2026-10-07). It is not in the Sume catalog. For a portrait 4K clip on Sume, Gemini Omni Flash 1.1 takes 9:16 at 4K, with native audio always on, for 3 to 10 seconds. Prices are Sume billable rates (provider list x 1.25, rounded up to the cent per job), read 2026-10-07.
Omni Flash 9:16 by resolution
| Seconds | 360p | 720p | 1080p | 4K |
|---|---|---|---|---|
| 3 | $0.12 | $0.38 | $0.57 | $1.13 |
| 6 | $0.23 | $0.75 | $1.13 | $2.25 |
| 10 | $0.38 | $1.25 | $1.88 | $3.75 |
Omni accepts only 16:9 and 9:16, so 1:1 and 4:5 social crops need a different model or a crop after the render. It does not accept audio references. If 1080p portrait is enough, the 1080p row is half the 4K price; 720p is a third.
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