ResearchResearch paperEfficiency & Inference1 source · Oct 13, 2026

AlignPred: Error-Controlled KV Cache Compression via Alignment and Predictive Coding

We present AlignPred, a codec that combines local alignment with predictive coding under a configurable KV reconstruction-error budget.

Key points

  • Long-running agents retain KV caches across turns and sessions for hours or days.
  • Compressing these persistent caches requires reducing storage while controlling reconstruction error.
  • AlignPred achieves near-native task scores at substantially compressed operating points on LongBench-Pro at 128K context.
  • AlignPred's SGLang HiCache integration reduces persistent target-KV storage by 42-72% relative to native HiCache, with comparable latency.

Sources (1)

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