FLUX.2 [klein] Base 4B

wavespeed-ai/flux-2-klein-base-4b/text-to-image

FLUX.2 [klein] Base 4B

wavespeed-ai/flux-2-klein-base-4b/text-to-image

FLUX.2 [klein] Base 4B is a compact text-to-image foundation model with 4B parameters, built for fast generation, flexible sizing, seed control, and LoRA-ready workflows.

Added May 18, 2026

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 3

Reference/edit images accepted • Route max 30 MB

Output Sizes

Square

Portrait

Landscape

up to 1,536px

Custom Resolution

Number of Images

Default

Resolution

Default

1024*1024

Options (6)

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

Seed

Number

Default

-1

Control reproducibility (-1 for random).

Benchmarks

Artificial Analysis

LMArena

Human preference benchmarks sourced from Artificial Analysis.

Text to Image

#106 / 129

ELO

974.0

Appearances

5,262

95% CI

-9/9

Image Editing

#51 / 60

ELO

1024.0

Appearances

5,513

95% CI

-10/10

Release Date 2026-01 · Matched as FLUX.2 [klein] Base 4B

Artificial Analysis API

Examples

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