Same Reward, Different Skills: When Multimodal RL Learns to Look
Reinforcement learning with verifiable rewards (RLVR) improves vision-language benchmark scores even without visual information during training. With images at test, blind-trained models recover roughly half of the real-image gain at 3B and nearly four fifths at 7B. Prolonged real-image training can erode grounding whi...
Hao-Cun Ye, Xin-Long Jiang, Qi-Le Chen et al.
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