GEN-1.5 success driven by repetitive motion data and UMI collection

DrJimFan · x · 2026-08-20

Dr. Jim Fan analyzes the success of GEN-1.5, attributing it to leveraging naturally repetitive motions in human data: symmetric patterns and recovery from fumbles. The key is keeping the full arc of failure and recovery rather than over-sanitizing data. He also highlights UMI (human-in-the-loop data collection) over teleoperation, as it preserves essential physical intuition. With sufficient data, zero-shot object manipulation becomes possible.

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