FLUX.2 Klein 4B launch post cover

Cost/megapixel

image output
$0.014
Released
10mo ago

Specifications

Model

Family
FLUXFLUX 2
Type
Image generation
Released
January 14, 2026
Model ID
black-forest-labs/flux.2-klein-4b

Capabilities

Input → output
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

Weights

Openness
Open weights
Size
4B

Sources:OpenRouter

Metadata synced Oct 27, 2026, 12:22 PM UTC

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