DeepSeek V4.1 Flash: even the sparse indexer is itself sparse, with hierarchical candidate selection

nrehiew_ · x · 2026-09-11

nrehiew adds a detail on DeepSeek V4.1 Flash: the indexer itself is sparse. The first full-mode indexer selects candidates, which are then used for scoring in later layers — a hierarchical selection structure.

Related event: DeepSeek V4.1 Flash Deep Dive: KV Cache Compression at the Frontier(9 posts)→

Original post →

More from Models

Models channel →