FLUX.2 [klein] 4B API Pricing Per Image
FLUX.2 [klein] 4B costs $0.001–$0.0038 per image, by size. That's up to 93% below the official price.
- Per image from
- $0.001
- 1K
- At 1K
- $0.001/image
- official $0.014/image
- Per 1,000 from
- $0.95
- 1K
- Below official
- up to 93%
Try it
Try FLUX.2 [klein] 4B — see the exact price first
Runs on your balance at the price on the button; failed runs are refunded. Results are saved to your account.
Per image
FLUX.2 [klein] 4B price per image by size
Our price with the official list price struck through, and what 1,000 images cost.
| Size | Per image | Per 1,000 |
|---|---|---|
1K ≈1 MP | $0.001 With a monthly plan: Max $0.0009 | $0.95 |
2K ≈4 MP | $0.0038 With a monthly plan: Pro $0.0037Max $0.0036 | $3.80 |
Monthly plans lower prices on most models (shown under each price); you can still pay as you go. Pro $499/month · Max $4,999/month.
- 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 18, 2026; our prices are live.
Calculator
What FLUX.2 [klein] 4B costs for your volume
Pick a size and a monthly volume. Every figure is a live quote, so per-image billing is exact.
Per month · 100 generations
0.095
$1.41 at the official price
- Per image
- 0.001
- Per kept image
- 0.001
- Saved per month
- $1.31
- Saved per year
- $15.72
Live prices · failed generations are free
At volume
From per image to per batch
Totals at 1K and 2K.
| Images | 1K | 2K |
|---|---|---|
| 1 | $0.001 | $0.004 |
| 10 | $0.01 | $0.038 |
| 100 | $0.095 | $0.38 |
| 1,000 | $0.95 | $3.80 |
| 10,000 | $9.50 | $38.00 |
- Unit. One output image, at the size you pick.
- Edits. Text to Image from $0.001; Image Edit from $0.0013.
- Failed = free. Failed generations, and jobs cancelled while queued, are refunded in full.
- Price first. POST /v1/quote/bfl/flux-2-klein-4b/text-to-image returns the exact price of any request, free.
Compare
FLUX.2 [klein] 4B per image vs other image APIs
Every image model we offer at 1K, cheapest first — each at its lowest price for that size. FLUX.2 [klein] 4B is number 1 of 20.
| # | Model | Tier | Per image | Official |
|---|---|---|---|---|
| 1 | FLUX.2 [klein] 4B Black Forest Labs | 1K | $0.001/image | |
| 2 | FLUX 3 Image Klein Black Forest Labs | 1K | $0.0019/image | |
| 3 | Z-Image Turbo Alibaba | 1K | $0.0048/image | |
| 4 | GPT Image 2.5 OpenAI | 1K · low | $0.0061/image | |
| 5 | GPT Image 2.5 Flare OpenAI | 1K · low | $0.0061/image | |
| 6 | Seedream 5.0 Flash ByteDance | 1K | $0.0154/image | |
| 7 | Qwen-Image 3.0 Alibaba | 1K | $0.0228/image | |
| 8 | FLUX.2 [pro] Black Forest Labs | 1 MP | $0.0276/image | |
| 9 | Seedream 5.0 Lite ByteDance | 1K | $0.0317/image | |
| 10 | FLUX 3 Black Forest Labs | 1K | $0.0317/image |
Price per image is one input; quality, speed and features differ. Quality levels differ between models; the tier column names each.
FAQ
FLUX.2 [klein] 4B price per image questions
FLUX.2 [klein] 4B is Black Forest Labs' open-weights model. CheaperGen provides API access to the open weights, run on GPU inference for open-source models, and does not own the model. Trademarks belong to their respective owners.