Seedream v4 — AI image generator

ByteDance's photoreal model — the best skin and light in the studio.

Seedream v4 is what to use when the image has to read as a photograph rather than as a render. It is noticeably better than the Flux family at the two things that give AI portraits away: skin, which keeps pores and subsurface warmth instead of turning to airbrushed plastic, and light, which falls with the softness and directionality of a real source.

It also takes free-form pixel dimensions up to 4,096 on a side — the widest sizing range of any model here. Every aspect ratio in the picker renders at exactly the shape you asked for, which is not true across the board; models that only accept a fixed ratio enum quietly snap your request to the nearest one they support.

What Seedream v4 is good for

Worth knowing before you spend credits

Photoreal is its instinct, and it will drag a stylised or illustrated prompt back toward realism. For flat illustration or graphic work, Flux Krea or the Grok models fight you less.

Seedream v4 specifications

Price212 credits — about 19c
TypeImage
Providerfal
Aspect ratios (13)1:1, 4:3, 16:9, 3:2, 19.5:9, 20:9, 2:1, 3:4, 9:16, 2:3, 9:19.5, 9:20, 1:2
Resolutions1k, 2k

Credit prices are the live studio rates. Cash equivalents are approximate at starter-pack rates and improve on the larger packs — see pricing.

Questions

What is Seedream v4 best at?
Photorealism — particularly skin texture and natural light. It is the strongest choice on comfyarts for portrait and product photography.
What is the largest image Seedream v4 can make?
Up to 4,096 pixels on a side, with free-form width and height rather than a fixed list of ratios.

Compare with other image models

Every AI model on comfyarts — image models, prices and measured capabilities side by side.