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A comment on Show HN: OfferGridAI – side-by-side comparison of real estate offers from PDFs. Parent comment

Re:Show HN: OfferGridAI – side-by-side comparison of real es... by simonw on Friday January 02, 2026 @10:13AM (#46465518)
No I'm talking about the image segmentation feature: https://simonwillison.net/2025/Apr/18/gemini-image-segmentat...

But the bounding box stuff might work well enough in Gemini 3 to handle this case as well.

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Re:Show HN: OfferGridAI – side-by-side comparison of real es... by lysecret on Friday January 02, 2026 @01:41PM (#46467917)
Hmm so that post also links back to segmentation done by structured outputs? (Though here not even enforcing the structure)

https://ai.google.dev/gemini-api/docs/image-understanding#se...

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Re:Show HN: OfferGridAI – side-by-side comparison of real es... by simonw on Friday January 02, 2026 @02:13PM (#46468233)
It's not supported by Gemini 3: https://ai.google.dev/gemini-api/docs/gemini-3#migrating_fro...

> Image segmentation: Image segmentation capabilities (returning pixel-level masks for objects) are not supported in Gemini 3 Pro or Gemini 3 Flash. For workloads requiring native image segmentation, we recommend continuing to utilize Gemini 2.5 Flash with thinking turned off or Gemini Robotics-ER 1.5.

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