AI video generator for TikTok: which Sume models make 9:16
Six Sume video models list 9:16 and one never takes an aspect ratio. Table of ratios, seconds and resolutions, read from the catalog on 2026-10-07.
TikTok is a vertical format, so the first filter on any video model is whether it can output 9:16. On Sume, send aspect_ratio on POST /v1/videos and check the catalog with GET /v1/videos/models, which lists supported_aspect_ratios per model.
Vertical support by model
Limits are from the Sume catalog docs and the router constraints on 2026-10-07.
| Model | Seconds | Resolutions | 9:16 |
|---|---|---|---|
| seedance-2.5 | 4-30 | 480p / 720p / 1080p | yes |
| seedance-2, 2-fast, 2-mini | 4-15 | 480p / 720p / 1080p | yes |
| wan-3.0 | 2-30 | 480p / 720p / 1080p | yes |
| kling-3 | 4-15 | 720p / 1080p | yes |
| gemini-omni-flash-1.1 (sume/auto) | 3-10 | 360p / 720p / 1080p / 4K | yes (16:9 or 9:16 only) |
| grok-imagine-video-1.5 | 4-15 | 480p / 720p | no aspect_ratio field; image-to-video only |
Two cases to handle
Grok takes a still and no aspect_ratio, so the frame you send is the thing you control. For a TikTok-shaped result send a vertical image. The MiniMax H3 models take 5 to 15 seconds; check supported_aspect_ratios in the catalog before relying on vertical output, as I did not verify it.
Length
Sociality.io reports TikTok in-app recording up to 10 minutes and uploads up to 60 minutes. Any single AI job on Sume is at most 30 seconds, so a full-length video is built from several jobs and joined.
Sources
Related posts
More in Models
- AI video models in the news, Oct 7 2026: which have a Sume id
Omni Flash, Veo 3.1, Kling 4.0, Ray3.2, Seedance 2.5, Wan 3.0, MiniMax H3, LTX-2.5 and Sora: which are in the Sume catalog today, and the nearest id when not.
- Anime-style ad with Seedance 2.5: use a character sheet as references
Send your mascot's character sheet as input_references to seedance-2.5 on Sume and test a 6-second anime-style ad at 480p before you pay for 720p.
- ByteDance models on Sume: Seedance family and Seedream prices
Seedance 2.5, 2.0, Fast and Mini plus Seedream 5 Lite, 4.5 Edit and v4, with Sume prices, limits and the pick for each job. Read 2026-10-07.
- Can Gemini Omni Flash speak my script? It takes no audio input on Sume
On Sume, Gemini Omni Flash 1.1 takes image and video references but no audio reference. It makes its own sound. For your script in a face, use avatar video.
Written by Sume