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About this paper

Vaibhav Verma, Chintakrindi Kumar Kartik, Sanyam Jain

Delta Block adds learned, token-dependent reads from earlier block-level differences to a Transformer’s usual residual pathway, preserving the running carrier while routing over grouped sources. In Qwen3-0.6B fine-tuned for 10,000 steps on Hindi FineWeb-2, it reaches a 29.968% downstream macro-average versus 29.266% for standard fine-tuning; this single-model, Hindi-only result does not establish broader gains.

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