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  3. FLUX.2 [klein] 4B

FLUX.2 [klein] 4B

FLUX.2 [klein] 4B is the fastest and lowest-cost public FLUX.2 API option in DayGen. Use it for rapid drafts and edits with up to four ordered image references before moving to a higher-quality family member.

Try FLUX.2 [klein] 4B

Best for

  • fastest drafts
  • low-cost iteration
  • quick edits
  • reference images

Use when

  • You want the fastest public FLUX.2 API option.
  • You need a low-cost draft or quick edit with up to four references.
  • You are testing a direction before a higher-quality FLUX.2 pass.

Avoid when

  • You need more than four image references.
  • You need final-detail output; use FLUX.2 [pro] or [max].

Inputs

  • prompt
  • up to four ordered image references

Outputs

  • image

DayGen surfaces

  • /image/create
  • /image/edit
  • QuickEdit
  • Agent image generation

Available settings

Aspect Ratio
1:1 (Square), 16:9 (Wide), 9:16 (Story), 4:3 (Classic), 3:4 (Portrait), 21:9 (Cinema), 2:1 (Panoramic)
Quality
Model-defined
Output Format
PNG, JPEG, WebP
Batch Size
1–4

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