AI video models with 4:3 and 3:4 aspect ratios on Sume

4:3 and 3:4 are the classic photo and tablet frames, and they sit between 1:1 and the wide and tall video ratios. Not every Sume video row lists them. The catalog is explicit: a ratio a model does not advertise is a 400, so the question is which rows list both.

Seedance 2.5, the Seedance 2.0 family, Wan 3.0, MiniMax H3 and MiniMax H3 Max all list 4:3 and 3:4, along with 16:9, 9:16 and 1:1 and the adaptive option. Kling Video v3 Pro lists only 16:9, 9:16 and 1:1, and Gemini Omni Flash 1.1 only 16:9 and 9:16.

What does each 4:3-capable row cost?

Aspect ratio does not change the price on a per-second row; the rate is keyed by resolution. So the costs are the same for 4:3 as for 16:9. The table shows the billable rate for the per-second rows.

Which should I pick?

For a 30-second 3:4 clip, Seedance 2.5 and Wan 3.0 are the only options, since the MiniMax rows stop at 15 seconds. For the cheapest 4:3, Wan 3.0 and the MiniMax rows tie at $0.0625 per second at 480p. For the top resolution at 3:4, H3 Max reaches 1080p at $0.20 per second, but note the catalog says 1080p there is latent refinement from native 768p, not a native 1080p render.

If you need audio references or reference images, all of these accept them; Kling does not.

How do I request it?

Send aspect_ratio: "3:4" or "4:3" on POST /v1/videos. Use adaptive if you pass a first frame and want the output to follow its shape. Do not send size; Sume's catalog does not accept pixel sizes on these rows.