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  1. Models
  2. Image

FLUX.2 [klein] 4B

Try Model

FLUX.2 [klein] 4B is a compact 4B-parameter text-to-image model from Black Forest Labs that delivers fast generation with quality results. Supports flexible sizing and JPEG, PNG, and WebP outputs.

Added May 18, 2026

Details

Approx. Price
$0.010 per image
Model type
text-to-image

Settings

Generation controls available for this model.

Images Per Run

Up to 4

Output images

Input Images

Up to 4

Reference/edit images accepted • Route max 30 MB

Output Sizes

Square
Portrait
Landscape
up to 1,536px

Custom Resolution

LoRA 1 Scale

Number

Default

1

Strength of the first LoRA (0.0 to 4.0).

LoRA 1 URL

Text

Default

N/A

Path to the first LoRA model (e.g., owner/model-name or .safetensors URL).

LoRA 2 Scale

Number

Default

1

Strength of the second LoRA (0.0 to 4.0).

LoRA 2 URL

Text

Default

N/A

Path to the second LoRA model (optional).

LoRA 3 Scale

Number

Default

1

Strength of the third LoRA (0.0 to 4.0).

LoRA 3 URL

Text

Default

N/A

Path to the third LoRA model (optional).

Number of Images

Default

1

Resolution

Default

1024*1024

Options (6)

1024*1024 (Square (1024x1024)), 1280*720 (Landscape (1280x720)), 720*1280 (Portrait (720x1280)), 1536*1024 (Wide (1536x1024)) +2 more

Showing 9 of 10 settings.

Benchmarks

Human preference benchmarks sourced from LMArena.

Text to Image

#72 / 92

Arena Score

1029.8

Votes

152,286

Confidence Interval

1026.6 - 1033.0

Image Edit

#53 / 63

Arena Score

1187.1

Votes

541,169

Confidence Interval

1184.2 - 1189.9

Published 2026-11-06 · Matched as FLUX.2 [klein] 4B

LMArena Dataset

Examples

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