FLUX.2 Klein 4B
- Released
- 9mo ago
- Image output / megapixel
- $0.014
Sources:OpenRouter
Image prices are listed in the billing units published by each provider; resolution and quality can affect the final cost.
Provider pricing
Rates are shown in each provider's published units. Resolution, quality, audio, and other settings may change the final charge.
Benchmarks
DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.
Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.
No benchmark results have been matched to this model yet.
Specifications
- Developer
- Black Forest Labs
- Model family
- FLUX
- Type
- Image generation
- Predecessor
- —
- Successor
- —
- Released
- January 14, 2026
- Model ID
black-forest-labs/flux.2-klein-4b- Openness
- Open weights
- License
- —
- Parameters
- 4B
- Input modalities
- text, image
- Output modalities
- image
- Modality
- text+image->image
- Aspect ratios
- 1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, auto
- Output formats
- png, jpeg
- Images per request
- 1
- Reference images
- 0–4
- Hugging Face
- black-forest-labs/FLUX.2-klein-4B
- Source freshness
- Endpoints synced Oct 15, 2026, 10:12 AM UTC
Infrastructure
Provider availability
| Provider | Endpoint | Pricing (published units) | Uptime 1d | Data handling |
|---|---|---|---|---|
| black-forest-labs | $0.014 (Image output / megapixel) | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 |
Provider data:OpenRouter
Deployment graph
Can I run this?
Vertical Tabs only shows compatibility when it has structured evidence tying this exact model to hardware, runtime, quantization, memory use, and observed performance.