FLUX.2 Klein 4B: API pricing, providers and specs
FLUX.2 Klein 4B is a image model by Black Forest Labs. 7 providers serve it, from $0.008 to $0.01 /run; the lowest price is at WaveSpeedAI.
How FLUX.2 Klein 4B compares
Against the 81 image models on the site priced the same way.
- Cheap for its class: at $0.008 /run, its lowest price undercuts 94% of comparable models (median $0.03).
- Its 128K-token context window is larger than 88% of them (median 4K), about 190 pages of text.
- On LMArena's Text-to-Image board it ranks #7 of the 8 comparable models scored there.
- 7 providers serve it; 93% of comparable models have fewer.
- Its weights are open under the Apache 2.0 license: commercial use allowed.
FLUX.2 Klein 4B prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Task | Output |
|---|---|---|
| Replicate | — | $0.001/MP |
 Fal | text-to-image | $0.005/MP |
 FastRouter | — | $0.005/img |
| WaveSpeedAI | text-to-image | From$0.008/run |
 EmpirioLabs AI | — | $0.009/img |
| Fal | image-to-image | $0.01/MP |
 APIYI | — | $0.01/run |
| WaveSpeedAI | image-to-image | From$0.012/run |
 NEAR AI Cloud | — | $1/1M |
- WaveSpeedAIFrom$0.008
- APIYI$0.01
Specs
- Type
- Image
- Maker
- Black Forest Labs
- Inputs
- Text, Image
- Outputs
- Image
- Capabilities
- Vision
- Released
- Jan 14, 2026
- License
- Apache 2.0commercial use allowed
- Open weights
- Yes, downloadable
- Parameters
- 3.9B
- Arena score
- 1030Text-to-Image
- Monthly searches
- 10K
1 uncensored versions · See them
Alternatives to FLUX.2 Klein 4B
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Arena | Providers |
|---|---|---|---|
| FLUX.2 Klein 4Bthis model | $0.008/run | 1030 | 7 |
 Photon | $0.015/run | 1036 | 2 |
 Z Image | $0.005/run | — | 3 |
 HiDream O1 Image Dev | $0.02/run | — | 2 |
| HiDream I1 Dev | $0.012/run | — | 2 |
| HiDream E1 Full | $0.024/run | — | 1 |
| Jib Mix Qwen Image | $0.02/run | — | 1 |
| Krea V2 Medium Turbo | $0.015/run | — | 1 |
| Photon Flash | $0.005/run | — | 2 |
More from Black Forest Labs
FLUX.2 Klein 4B FAQ
The lowest price for FLUX.2 Klein 4B is $0.008 /run, at WaveSpeedAI.
WaveSpeedAI, at $0.008 /run. 7 providers serve FLUX.2 Klein 4B; the table above lists every one with its price.
FLUX.2 Klein 4B reads up to 128K tokens per request and writes up to 4K.
Yes. FLUX.2 Klein 4B's weights can be downloaded from its maker's Hugging Face page, under the Apache 2.0 license.
About 3.9B, as the safetensors metadata of its official Hugging Face repo states.
7 API providers serve FLUX.2 Klein 4B. Compare their prices above, or open a provider to see everything it offers.
Can't find what you're looking for? Contact us