FLUX.2 [klein] 4B

flux-2-klein-4b

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.

Generation

Open in Studio Create an API key

Pricing

Includes our margin. Charged per request from your balance.

Per image: $0.011Same price for all 7 options
Per image with references: $0.013

Details

Provider: Black Forest Labs
Added: May 18, 2026

Options

Parameters this model accepts.

Resolutions: 1024*1024
1280*720
720*1280
1536*1024
1024*1536
1536*1536
Images per request: Up to 4
Input images: Up to 4
Input image formats: PNG, JPEG, WEBP
Max input image size: 30 MB

Use it from the API

Replace $HIDE_API_KEY with a key from the Developers page. Base URL https://hide.st/api/v1.

curl https://hide.st/api/v1/images/generations \
  -H "Authorization: Bearer $HIDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-2-klein-4b",
    "prompt": "A lighthouse on a rocky coast at dusk, oil painting",
    "n": 1
  }'

Pricing

Details

Options

Use it from the API

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