Flux Fill Pro
Black Forest Labs' mask-based inpainting model. Pixel-perfect localized edits — paint a mask over the region you want changed, describe what should fill it, the rest of the image is untouched. The complement to Flux Kontext: Kontext for instruction-based whole-image edits, Fill Pro for precision regional work.
Examples generated with Flux Fill Pro
FAQ
What is Flux Fill Pro?
Black Forest Labs' mask-based inpainting model. Pixel-perfect localized edits — paint a mask over the region you want changed, describe what should fill it, the rest of the image is untouched. The complement to Flux Kontext: Kontext for instruction-based whole-image edits, Fill Pro for precision regional work.
What is Flux Fill Pro best for?
- mask-based inpainting
- object removal with precision
- localized edits
- background replacement with mask control
- specific-region adjustments
What does Flux Fill Pro do well?
- precision inpainting with mask control
- preserves untouched regions perfectly
- fast
What is Flux Fill Pro not great at?
- requires mask input — not pure instruction-following
- less suited for text-only edit prompts
How should I prompt Flux Fill Pro?
- draw masks precisely — sloppy masks produce sloppy results
- describe what should fill the masked region
- use for localized edits, not full image transformations
What are alternatives to Flux Fill Pro?
Common alternatives: Nano Banana 2 (with masking), Flux Kontext Pro.
How much does Flux Fill Pro cost on Upsampler?
5 credits per generation — no subscription, credits never expire.
Can I try Flux Fill Pro for free?
You can try a free, no-signup version of our ai image editor — note that the free version may use a different, lighter model rather than Flux Fill Pro itself.