Flux 2 Klein 9B vs Seedream 5 Lite
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Flux 2 Klein 9B costs 0.5 credits and edited our reference photo in about 15 seconds. Seedream 5 Lite costs 1 credit, twice the price, and took about 30 seconds on the identical photo and instruction. Both actually preserved the subject's identity from the photo, so this is a real edit-versus-edit comparison, not a capability gap. We ran both on August 26, 2026.
The same reference photo, edited two ways
Every example below was produced on PixelDojo. Hover to see the prompt.
Place this exact woman on a bicycle crossing a rainy city crosswalk at dusk, neon shop signs reflecting in puddles, cinematic wide shot, keep her face, glasses, red curly hair, denim jacket and yellow shirt identical
Flux 2 Klein 9B
Place this exact woman on a bicycle crossing a rainy city crosswalk at dusk, neon shop signs reflecting in puddles, cinematic wide shot, keep her face, glasses, red curly hair, denim jacket and yellow shirt identical
Seedream 5 Lite
Price, speed, and what each edit actually added
Both took the reference photo, not just the description
Flux 2 Klein 9B and Seedream 5 Lite both accept an image alongside the prompt and edit from it. We attached the same character-sheet photo, a woman with red curly hair, round glasses, a denim jacket and a yellow shirt, to both requests.
Price
Flux 2 Klein 9B is a flat 0.5 credits per image, half of Seedream 5 Lite's flat 1 credit. It is the cheaper of the two by a full 2x regardless of settings.
Measured speed
Flux 2 Klein 9B finished in about 15 seconds. Seedream 5 Lite took about 30 seconds on the identical prompt and reference photo, twice as long. Both numbers move with queue load.
What Flux 2 Klein 9B's edit looked like
A 1024 by 1024 square: the woman mid-crossing on a yellow-framed bike, red curly hair, round glasses, denim jacket and rolled yellow-cuffed jeans matching the reference, brown boots, storefront signage in the background that reads as text-like shapes without being fully legible.
What Seedream 5 Lite's edit looked like
A wide 2848 by 1600 cinematic frame: the woman standing beside the bike near a crosswalk, the same hair, glasses, jacket and yellow shirt from the reference, with three separate storefront signs, CAFE, LAUNDROMAT and OPEN, all rendered as fully legible neon text.
Signage legibility is the clearest difference
Seedream 5 Lite's three background signs all came out as real, readable words. Flux 2 Klein 9B's signage read as plausible sign shapes but not as clean legible text, which matters if the background lettering is part of the brief.
Same reference photo, same instruction, both edit-capable. Flux 2 Klein 9B: 0.5 credits, about 15 seconds. Seedream 5 Lite: 1 credit, about 30 seconds.
How It Works
How we ran the comparison, so you can repeat it:
Attach the same reference photo to both
The same character-sheet photo, sent as an image reference to flux-2-klein-9b and to seedream-5-lite alongside the identical scene-placement instruction.
Bracket each request with a timestamp
We recorded the start of each submission and the moment the finished file arrived. Flux 2 Klein 9B took about 15 seconds; Seedream 5 Lite took about 30 seconds.
Zoom into the signage before judging
Both kept the subject's identity. The real difference showed up in the background text, where only one of the two rendered fully legible words.
The Pixel Dojo Advantage
Same edit, same reference photo, one at half the price of the other.
| Others | Pixel Dojo |
|---|---|
| Flux 2 Klein 9B: 0.5 credits flat per image. | Seedream 5 Lite: 1 credit flat per image, twice the price. |
| Flux 2 Klein 9B measured turnaround: about 15 seconds on our run. | Seedream 5 Lite measured turnaround: about 30 seconds, twice as long on the identical edit. |
| Flux 2 Klein 9B output: 1024x1024, background signage reads as sign-shaped but not fully legible. | Seedream 5 Lite output: 2848x1600, three separate storefront signs all rendered as legible words. |
| Flux 2 Klein 9B is a Flux 2 variant with up to 10 reference images per request. | Seedream 5 Lite accepts up to 14 reference image URLs per request, the highest cap of any model in this pairing. |
| Flux 2 Klein 9B is the cheaper choice for a fast draft edit. | Seedream 5 Lite is the choice when legible background text matters more than price. |
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Common Questions
Everything you need to know about Flux 2 Klein 9B vs Seedream 5 Lite
Can both of these edit an existing photo?
Yes. Both took our reference photo, a woman with red curly hair, round glasses, a denim jacket and a yellow shirt, and edited it into the new scene rather than generating a fresh person from text.
Which is cheaper, Flux 2 Klein 9B or Seedream 5 Lite?
Flux 2 Klein 9B, at a flat 0.5 credits against Seedream 5 Lite's 1 credit. It costs half as much per image.
Which one is faster?
Flux 2 Klein 9B, in our test. It returned the edit in about 15 seconds against about 30 seconds for Seedream 5 Lite on the same prompt and reference photo, half the time as well as half the price.
Which one renders background text more legibly?
Seedream 5 Lite, clearly, in our test. All three storefront signs in its output came out as legible words. Flux 2 Klein 9B's signage read as plausible shapes rather than clean text.
How many reference images can each one take?
Flux 2 Klein 9B, as a Flux 2 variant, accepts up to 10 reference images per request. Seedream 5 Lite accepts up to 14.
How do I call either one from the API?
POST to /api/v1/models/flux-2-klein-9b/run or /api/v1/models/seedream-5-lite/run with the same API key, an image_urls field, and the prompt.