Gpt-image-1 problems with mask edits

So gpt-image-1-mini has v1/images/edits available. Is it a soft edit or a hard edit? Does it accept masks? Anybody tried it out?

Hey everyone,

Sorry for the delay in updates here. Confirming that gpt-image-1 doesn’t yet support precise inpainting, so mask edits can affect nearby areas or sometimes regenerate most of the image. The model currently treats masks in 16×16 blocks, so results won’t match Photoshop-style precision.

If you’re using the API, make sure:

  • The mask and base image are the same size

  • The mask includes an alpha channel (transparent = keep, opaque = edit)

  • You use "quality": "high" for better consistency

The team is working on improving masking accuracy in future image models!

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