Cheaper Gen.
Black Forest LabsPricing

FLUX.2 [klein] 4B Pricing

FLUX.2 [klein] 4B costs $0.0007–$0.0027 per image, depending on size. That's up to 95% below Black Forest Labs' official list price. No subscription; failed generations are free.

Per image from
$0.0007
1K
2K image
$0.003
official $0.017
1,000 images
$0.70
1K
Below official
up to 95%
Try in Studio Call the API

Price list

FLUX.2 [klein] 4B price per image

Every tier with Black Forest Labs' official list price, our price and what common batches cost.

FLUX.2 [klein] 4B pricing for every tier
TierOfficialCheaper Gen.Save100 imagesImages / $10
1K
≈1 MP
$0.014/image$0.0007/image−95%$0.0714,285
2K
≈4 MP
$0.017/image$0.0027/image−84%$0.273,703
  • Official price: BFL API list price for FLUX.2 [klein] 4B ($0.014 for the first output megapixel, $0.001 per additional MP; input images at $0.001 / MP). Verified October 16, 2026.

By task

FLUX.2 [klein] 4B pricing by endpoint

Each FLUX.2 [klein] 4B endpoint is billed on the same per-image rates. Starting price per endpoint:

FLUX.2 [klein] 4B Text to Imageup to −95%
$0.0007/image · 1K

Input: A prompt · bfl/flux-2-klein-4b/text-to-image

FLUX.2 [klein] 4B Image Editup to −94%
$0.0009/image · 1K

Input: Input images (+ prompt) · bfl/flux-2-klein-4b/edit

Cost examples

What FLUX.2 [klein] 4B images cost

Worked examples at today's prices, against the official list price.

FLUX.2 [klein] 4B cost examples
Use caseRequestTierOfficialCheaper Gen.Saved
Single image1 image1K$0.014$0.001$0.013
Hero image1 image2K$0.017$0.003$0.014
Product catalog500 images1K$7.00$0.35$6.65
Monthly production10,000 images1K$140.00$7.00$133.00

Estimate your monthly FLUX.2 [klein] 4B bill

Pick a tier and your monthly volume. Switch models to compare — same live prices as the tables above.

Model
Size

Drag the slider — or pick a model — to try your own numbers.

FLUX.2 [klein] 4B at 1K: 10,000 images per month costs $140 at the official list price and $7.00 on Cheaper Gen. — you save $133 a month.

Billing

How FLUX.2 [klein] 4B billing works

The same rules apply in the API, the Playground and the Studio. Full details in the billing docs.

  • Unit. Per image.
  • Official reference. BFL API list price for FLUX.2 [klein] 4B ($0.014 for the first output megapixel, $0.001 per additional MP; input images at $0.001 / MP), verified October 16, 2026.
  • Hold, then settle. The quoted price is held from your prepaid balance when you submit and becomes the final charge on success. The exact cost is returned with every generation.
  • Failed = free. Failed generations, and jobs you cancel while queued, are refunded in full automatically.
  • Price before you run. POST /v1/quote/bfl/flux-2-klein-4b/text-to-image returns the price, the official price and your discount for any input — free.

FAQ

FLUX.2 [klein] 4B pricing questions

How FLUX.2 [klein] 4B compares on price

FLUX.2 [klein] 4B costs from $0.0007/image at 1K to $0.0027/image at 2K per generated image. The official list price is $0.014–$0.017 per image (BFL API list price for FLUX.2 [klein] 4B). Requesting several images costs the per-image price times the count.

Per image, from prepaid credits in US dollars. The exact cost is shown on the Generate button in the Studio and returned with every API generation.

No. The quoted price is held when you submit and refunded in full, automatically, if the generation fails or you cancel it before it starts.

There is no subscription and no monthly fee. Cheaper Gen. is prepaid: add credits from $10, spend them on any model in the API or the Studio, and failed generations are refunded automatically. The quote endpoint (POST /v1/quote/{endpoint}) is free, so you can price any request before you run it.