Cheapest FLUX 3 Image Klein API
Run Black Forest Labs' open-weights FLUX 3 Image Klein from $0.0011/image — 87% below the official $0.008/image. Pay per image, no subscription needed, failed generations refunded.
- From
- $0.0011/image
- 768
- Official
- $0.008/image
- Black Forest Labs
- You save
- up to 87%
- 1,000 images
- $1.07
- official $8.00
Try it
Try FLUX 3 Image Klein at this price
Runs on your balance at the price on the button; failed runs are refunded. Results are saved to your account.
Price check
FLUX 3 Image Klein: our price vs the official price
Every FLUX 3 Image Klein tier, priced live from our catalog next to Black Forest Labs' official list price.
| Tier | Black Forest Labs official | CheaperGen | You save | 100 images |
|---|---|---|---|---|
768 768×768 | $0.0011/image With a monthly plan: Max $0.001 | −87% | $0.11$0.80 | |
1K 1024×1024 | $0.0019/image With a monthly plan: Pro $0.0018Max $0.0017 | −79% | $0.19$0.90 | |
1.5K 1536×1536 | $0.0043/image With a monthly plan: Pro $0.004Max $0.0038 | −61% | $0.43$1.10 | |
2K 2048×2048 | $0.0074/image With a monthly plan: Pro $0.0069Max $0.0065 | −48% | $0.74$1.40 | |
4K ≈16 MP | $0.0342/image | −5% | $3.42$3.60 | |
Edit 1K 1–10 reference images | $0.0085/image | −6% | $0.85$0.90 | |
Edit 2K 1–10 reference images | $0.0133/image | −5% | $1.33$1.40 | |
Edit 4K 1–10 reference images | $0.0342/image | −5% | $3.42$3.60 |
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 3 Image Klein ($0.008 at 768², $0.009 at 1K, $0.011 at 1.5K, $0.014 at 2K, $0.036 at 4K; BFL charges the same for an edit) — https://docs.bfl.ai/quick_start/pricing#flux-3-image-klein. Verified October 18, 2026. Editing has its own price per output size (the Edit rows: 1K, 2K or 4K), the same however many reference images (up to 10).
At scale
What FLUX 3 Image Klein costs at volume
Totals for common batch sizes at today's per-image prices.
| Batch | Tier | Official | CheaperGen | You keep |
|---|---|---|---|---|
| 100 images | 768 | $0.80 | $0.11 | $0.69 |
| 1,000 images | 768 | $8.00 | $1.07 | $6.94 |
| 10,000 images | 768 | $80.00 | $10.62 | $69.38 |
| 1,000 images | 4K | $36.00 | $34.20 | $1.80 |
Why it costs less
FLUX 3 Image Klein: open weights, lower price
An open-weights model has no lab API price in between: what you pay follows what serving it costs. How our inference works.
Open weights
FLUX 3 Image Klein is Black Forest Labs's open-weights model: no lab API price sits in between, so what you pay follows what serving it costs.
Our own GPU inference
For open-source models, our own GPU inference — optimized kernels, warm pools and per-model tuning — makes generation several times faster and lowers the cost further.
Automatic routing
Every FLUX 3 Image Klein request is routed to the most cost-effective healthy route, with live health checks and failover.
Spend less
Ways to pay even less for FLUX 3 Image Klein
Use 768 while you iterate
A 768 image costs $0.0011, 3% of the 4K price ($0.0342). Explore at 768, then generate finals at the size you need.
Consider FLUX.2 [klein] 4B for volume
In the same family, FLUX.2 [klein] 4B costs $0.001/image at 1K vs $0.0019/image for FLUX 3 Image Klein — 50% less.
Failed generations cost nothing
The price is held when you submit and refunded in full if a generation fails or you cancel it while it is queued. You only pay for outputs you get.
Volume pricing below these rates
Committed monthly volume unlocks rates below the public price list, plus invoicing and dedicated capacity.
Cheaper alternatives
Cheaper alternatives to FLUX 3 Image Klein
Other image models with an overlapping task, cheapest first. Price per image at each model's lowest tier.
Start generating with FLUX 3 Image Klein
Try FLUX 3 Image Klein in the Studio, or call it from your code with one API key. A 768 image costs $0.002 and failed generations are refunded.
curl -X POST https://cheapergen.com/api/v1/run/bfl/flux-3-image-klein/text-to-image \
-H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{"prompt": "…"}'FAQ
Cheapest FLUX 3 Image Klein API questions
Our prices on this page are live; Black Forest Labs' official prices were verified October 18, 2026.
FLUX 3 Image Klein 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.