FLUX.2 [klein] 4B
Fast 4B open-weight image generation and editing model
- Organization
- black-forest-labs
- Family
- flux
- Providers
- 3
- Context
- 0
- Output limit
- 0
- Knowledge
- —
- Release
- 2026-01-15
- Updated
- —
- Weights
- Open
- Input
- text, image/png, image/jpeg, image/webp
- Output
- image/jpeg, image/png, image/webp
- Capabilities
- —
Providers
Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.
| Provider | Model ID | Context | Output | Input / output · 1M | Reasoning | Tools | Structured | Details |
|---|---|---|---|---|---|---|---|---|
| NEAR AI Cloud | black-forest-labs/FLUX.2-klein-4B | 0 | 0 | — / — | — | — | — | View |
| Nvidia | black-forest-labs/flux_2-klein-4b | 0 | 0 | — / — | — | — | — | View |
| OpenRouter | black-forest-labs/flux.2-klein-4b | 0 | 0 | — / — | — | — | — | View |
Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.
Pricing
Compare token rates and cache charges across available routes and hosting configurations.
Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.
Benchmarks
Review attributed evaluation results on each source's original scale.
Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.
Detailed evaluations
| Evaluation | Configuration | Source | Results | Details |
|---|---|---|---|---|
| models · imageediting | FLUX.2 Klein 4B Editblack-forest-labs/flux.2-klein-4b | Design Arena | 1,052 Elo | Details |
| models · imageediting | FLUX.2 Klein 4B Distilled Editblack-forest-labs/flux.2-klein-4b | Design Arena | 1,051 Elo | Details |
| models · image | FLUX.2 Klein 4Bblack-forest-labs/flux.2-klein-4b | Design Arena | 1,060 Elo | Details |
| models · logo | FLUX.2 Klein 4B Distilledblack-forest-labs/flux.2-klein-4b | Design Arena | 1,058 Elo | Details |
| models · logo | FLUX.2 Klein 4Bblack-forest-labs/flux.2-klein-4b | Design Arena | 1,060 Elo | Details |
| models · graphicdesign | FLUX.2 Klein 4Bblack-forest-labs/flux.2-klein-4b | Design Arena | 1,004 Elo | Details |
| models · image | FLUX.2 Klein 4B Distilledblack-forest-labs/flux.2-klein-4b | Design Arena | 1,061 Elo | Details |
| models · graphicdesign | FLUX.2 Klein 4B Distilledblack-forest-labs/flux.2-klein-4b | Design Arena | 1,000 Elo | Details |
Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 24, 2026.
Frequently asked questions
Answers based on the model metadata and serving offers currently in the catalog.
How much does FLUX.2 [klein] 4B cost?
Listed rates start at — per million input tokens and — per million output tokens. Prices vary by provider and configuration; see Pricing for details.
Which providers offer FLUX.2 [klein] 4B?
There are 3 cataloged offers across 3 providers. Compare model IDs, prices and limits in Providers.
What is the context window?
The cataloged model context is 0 tokens. Each serving endpoint may apply a different limit.
Does it support tools and structured output?
Tool calling: Not reported. Structured output: Not reported. Support can vary by endpoint.
Resources
apache-2.0Catalog history · 1 recorded revision
Metadata observations since this model was first cataloged. These are not model release versions.
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