FLUX.2 Klein from $0.014 at BFL: Sume lists Pro at $0.0375, no Klein
Black Forest Labs lists FLUX.2 Klein 4B from $0.014 and Pro from $0.03. Sume lists flux-2-pro at $0.0375 and flux-2-flex, not Klein. 10,000-image costs.
Black Forest Labs lists FLUX.2 Klein 4B from $0.014 per image and FLUX.2 Pro from $0.03 (read 2026-10-09). Sume's catalog lists flux-2-pro at $0.0375 and flux-2-flex, and does not list Klein or FLUX.2 Max. For 10,000 text-to-image outputs that is $140 on BFL's Klein 4B 'from' rate against $375 for flux-2-pro on Sume.
BFL's FLUX.2 list
BFL prices FLUX.2 by megapixel, so each 'from' figure is a starting rate that grows with output size. BFL says to use its calculator for exact costs. Treat the table as a floor.
| Model | BFL from price | Arithmetic | 10,000 images |
|---|---|---|---|
| Klein 4B | $0.014 | 10,000 x 0.014 | $140 |
| Klein 9B | $0.015 | 10,000 x 0.015 | $150 |
| Pro | $0.03 | 10,000 x 0.03 | $300 |
| Flex | $0.05 | 10,000 x 0.05 | $500 |
| Max | $0.07 | 10,000 x 0.07 | $700 |
What Sume lists
Sume's rows follow the provider list times 1.25. flux-2-pro is 0.03 x 1.25 = $0.0375, so 10,000 images cost $375. flux-2-flex is 0.05 x 1.25 = $0.0625, or $625 for 10,000. Klein and Max are not in Sume's catalog as of 2026-10-09, so there is no Sume price to quote for them.
BFL's page also lists an editing price for Pro from $0.045. Sume's per-model descriptor, from GET /v1/images/models, is the place to confirm whether flux-2-pro accepts reference images and at what rate before you plan an edit workflow.
Which to use
If your volume is large and you only need the smallest FLUX.2 model, BFL's direct Klein rate is far below any Sume row and Sume is not the right tool. If you want FLUX.2 Pro alongside other models in one wallet, flux-2-pro at $0.0375 sits among the cheaper Sume rows, below Seedream 5 Lite ($0.04375) and Recraft V4 ($0.05).
FLUX.3 Image is a separate BFL model that Sume does not list yet; its prices are on the same BFL page.
Reading a 'from' price
BFL's page prices FLUX.2 by megapixel, which means the 'from' number applies to the smallest outputs. A 2 MP image costs more than the floor. Multiply by your real output size before comparing: if your images are 2 MP and the rate scales linearly, the Klein 4B figure doubles, which still leaves it below Sume's flux-2-pro row. Check BFL's calculator for exact numbers.
Sume's own rows are per image rather than per megapixel, so a comparison is most reliable at the resolution you actually use. Read the flux-2-pro endpoint on Sume for the sizes it accepts.
Sources
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