Author

Seonghyeon Park

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Preprint Aug 2026

Answer First, Reason Later: When Commitment Order Costs Accuracy in Diffusion Language Models

Masked diffusion language models revise many masked output positions in parallel. We call a token committed once it becomes visible and is never masked again, and call a response answer-first when the final answer commits before the reasoning printed ahead of it. On 1,069 GSM8K test questions, an explicit step-by-step...

J. Yeom, Jaewon Sok, Seonghyeon Park et al. · 0 citations

A NSWER F IRST , R EASON L ATER : C OMMITMENT O RDER IN D IFFUSION LLM S

These results reframe existing window-style samplers, previously motivated by efficiency, as the minimal fix for a reasoning pathology they were never designed to address.

J. Yeom, Jaewon Sok, Seonghyeon Park et al. · 0 citations