Models
The models behind Sume's video, image, speech, and music endpoints: ids, clip lengths, resolutions, aspect ratios, audio, references, and migration.
AI video negative prompt: how to keep things out of a clip
Sume's video API has no negative prompt field, and today sending one returns a 400. Describe the shot you want, then pin its frames, look, and sound.
AI video from multiple images: frames, references, stills
On Sume, one AI clip takes two images, as its first and last frames. For more, chain clips pair by pair, use references, or hold them as stills.
AI video 4K quality prompt: what actually sets resolution
Writing 4K in a prompt is not how Sume sets resolution. Request 4K in the resolution field of a model that lists it, or upscale a finished clip.
Seedance 2.5 API: 30-second clips, resolutions, references
Seedance 2.5 on Sume is seedance-2.5: 4–30 second clips at 480p, 720p, or 1080p. The documented limits, inputs, and billing for each Seedance id.
Sora API alternatives for video generation after the shutdown
The Sora API shut down on September 24, 2026. Compare Runway, Kling, fal, Replicate and Sume by models, audio, price unit, API shape and limits.
AI video generation API length limits: up to 30 seconds per clip
On Sume, seedance-2.5 (4–30 s) and wan-3.0 (2–30 s) make 30-second clips; other models stop at 15 s or less. Limits by model, the error, and going longer.
4K AI video generation API: resolutions by model, 360p to 4K
For 4K on Sume, pin gemini-omni-flash-1.1 with resolution 4K; minimax-h3 upscales to 2K or 4K. Resolutions for every video model, and the price effect.
Gemini Omni Flash 1.1 API: text, image, and reference video modes
Call Gemini Omni Flash 1.1 on Sume as gemini-omni-flash-1.1: text, image, or reference to video, 3–10 second clips from 360p to 4K, with native audio.
MiniMax H3 API: H3 and H3 Max video at native 768p with stereo audio
Call MiniMax H3 and H3 Max on Sume as minimax-h3 and minimax-h3-max: 5–15 second clips at native 480p or 768p, 1080p on H3 Max, always with stereo audio.
Lip sync API: turn an image and audio into a talking clip
Send a still image and Sume-hosted audio to VEED Fabric 1.0 or MiniMax H3 Max Lip Sync and get a talking clip back. Inputs, limits, and per-second pricing.
Image generation API models on Sume: edits, references, and masks
Sume's image generation API lists 17 models. See which edit from reference images, how many references each takes, which are text-only, and which take masks.
Wan 3.0 API: 2–30 second AI video with audio, frames, and references
Call Wan 3.0 on Sume as wan-3.0: 2–30 second clips at 480p, 720p, or 1080p from a prompt, first and last frames, or image, video, and audio references.
Motion control API: animate an image with a driving video
Kling 3.0 Motion Control on Sume animates a still image with the motion of a driving video up to 30 seconds long. Request fields, limits, and price.