GUI-G1-3B shows that for GUI grounding, removing reasoning chains, regularizing box size in the reward, and reweighting GRPO by difficulty yields 90.3% on ScreenSpot and 37.1% on ScreenSpot-Pro.
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GUI-G1: Understanding R1-Zero-Like Training for Visual Grounding in GUI Agents
GUI-G1-3B shows that for GUI grounding, removing reasoning chains, regularizing box size in the reward, and reweighting GRPO by difficulty yields 90.3% on ScreenSpot and 37.1% on ScreenSpot-Pro.