ByteDance
Seedream 4.0
Unified text-to-image and editing architecture, up to 4K resolution
Updated September 2, 2026
Vendor
ByteDance
Credits
8 credits
Speed
~6s
Rating
★★★★☆
When to Pick Seedream 4.0
The catalog brackets Seedream 4.0 at 8 credits per image — 12 models cost less, 16 cost more. The ~6s latency suits deliberate work — worth the wait when the result is a deliverable, wasteful for throwaway drafts. Its catalog tags read image editing and 4k — the areas where it outperforms general-purpose picks. Reach for Seedream 4.0 when image editing matters most and you would rather not open a separate ByteDance account to get it.
When to Look Elsewhere
If budget is the dominant constraint, Lucid Origin delivers solid results at 6 credits — 2 credits cheaper per image than Seedream 4.0. When you are cycling through dozens of drafts, FLUX.1 Schnell at ~2s per image keeps the loop tighter than Seedream 4.0's ~6s. None of that covers the fidelity-first case: when detail is non-negotiable, the flagship models above Seedream 4.0 justify their price.
Seedream 4.0 FAQ
How much does Seedream 4.0 cost?
Each Seedream 4.0 generation runs 8 credits on UnitPic. The balance is catalog-wide: spend it on ByteDance models, OpenAI models or anything else — no per-vendor subscriptions.
How fast is Seedream 4.0?
Typical latency is ~6s per image. That positions it as a quality-first option — fast enough for production assets, less ideal for rapid-fire drafts within the current catalog.
What is Seedream 4.0 best at?
image editing, 4k is its home turf. Unified text-to-image and editing architecture, up to 4K resolution Studio lets you verify that directly — same prompt, Seedream 4.0 beside any other model.
Is Seedream 4.0 worth it compared to cheaper models?
Cheaper options exist (10 of them in the catalog). The case for paying more is image editing and 4k. Decide empirically: same prompt on Seedream 4.0 and the cheapest catalog model, side by side in Studio.
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