Remark. Prefix Sliding is a source-reported intervention [ftip-00DE]
Remark. Prefix Sliding is a source-reported intervention [ftip-00DE]
Muennighoff et al. describe Prefix Sliding in Sections 2--5, Figures 6--9, and the Limitations section of [muennighoff2026prefixsliding, Sections 2--5, Figures 6--9, and Limitations]. Their method preserves a prefix while sliding a recent attention window during test-time scaling. The reported experiments change retained context and runtime, and may also change rollout horizon and the training gradient approximation. These are source observations, not a theorem of universal speedup or capability.
The source studies named model and task configurations. It does not by itself establish support expansion, latent capability acquisition, or a deployment-shift guarantee.