Flux 2 Pro vs Seedream 4.5

Flux 2 Pro and Seedream 4.5 differ on 3 specifications — from what each one costs to which inputs it accepts. Every value below is read from the live model catalog, so it stays current as new versions ship.

Which should you use?

Seedream 4.5 hits 4K at a flat 6 credits; Flux 2 Pro reaches the same ceiling but runs 5 to 25 and adds a 1K tier. Pick Seedream for predictable cost, Flux for the cheaper low end and its family of tiers.

Flux 2 Pro covers 1K, 2K and 4K from 5 to 25 credits. Seedream 4.5 covers 3K and 4K at a flat 6.

The flat price is Seedream's real advantage — a 4K image costs 6 credits, full stop, where the same on Flux 2 Pro sits at the top of a range reaching 25. If large output is your normal case, that predictability compounds.

Flux's advantage is the low end and the family around it. Flux 2 from 3 credits and Flux 2 Flash from 2 cover the same 1K–4K range, so you can explore very cheaply and finish on Pro. Seedream 4.5 has no equivalent cheap tier, and its sibling Seedream 5.0 Pro stops at 2K.

Pick Flux 2 Pro when

  • You want a 1K or 2K tier for cheap iteration; Seedream 4.5 starts at 3K.
  • You are in a Flux workflow and want the cheaper Flux 2 and Flux 2 Flash tiers alongside.

Pick Seedream 4.5 when

  • You want flat, predictable pricing at 6 credits per image.
  • You only ever generate at 3K or 4K and never need smaller.

Checked against both models on 2026-08-09.

Flux AI

Flux 2 Pro

High-quality editing and style transfers, always stable

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ByteDance

Seedream 4.5

Image Generation & Image Editing

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Side-by-side specs

How Flux 2 Pro and Seedream 4.5 compare when used for Text to Image.

Flux 2 Pro versus Seedream 4.5 specifications for Text to Image
SpecificationFlux 2 ProSeedream 4.5
Starting pricefrom 5 credits per generationfrom 6 credits per generation
VersionsStandardStandard
Resolution1k, 2k, 4k3k, 4k
Aspect ratios21:9, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:1621:9, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:16
Text promptYesYes
Reference imagesUp to 4Up to 10
Try both in the Text to Image generator

Frequently asked questions

Is Flux 2 Pro or Seedream 4.5 better?
Seedream 4.5 hits 4K at a flat 6 credits; Flux 2 Pro reaches the same ceiling but runs 5 to 25 and adds a 1K tier. Pick Seedream for predictable cost, Flux for the cheaper low end and its family of tiers.
What's the difference between Flux 2 Pro and Seedream 4.5?
Flux 2 Pro and Seedream 4.5 differ on 3 tracked specifications, covering price, output resolution, duration limits and which inputs each one accepts. Both are available on ZOOOP for Text to Image, so you can run the same prompt through each and compare the results directly.
Is Flux 2 Pro or Seedream 4.5 cheaper?
Flux 2 Pro starts at 5 credits, against 6 for Seedream 4.5. Both are starting prices: the final cost scales with resolution, duration and any extra options you turn on.
Can I use both Flux 2 Pro and Seedream 4.5 on ZOOOP?
Yes. One ZOOOP account gives you both Flux 2 Pro and Seedream 4.5 — plus every other model in the catalog — on the same credits, with no separate subscription per provider. You can switch models mid-project and keep your prompt.

More comparisons

See all comparisons

Specifications are read from the live ZOOOP model catalog and change as providers ship new versions. Credit figures are starting prices — the final cost depends on resolution, duration and the options you pick.