KV-cache agent-state persistence: reported 89% better completion, 67% fewer calls

Persisting agent state (observations, plans, tool results) in key-value storage between calls reportedly yielded large task-completion and call-count improvements. Effect size is vendor-sourced.

What it means If the effect holds, strong evidence for on-disk substrate-loading + persistence work. UNVERIFIED effect size — find the primary benchmark before citing the numbers.