DataFunTalk

Sep 27, 2026 · Artificial Intelligence

AWS Strands Harness Cuts Agent Costs 77% by Swapping Runtime, Not Model

AWS open-sourced Strands Harness, a pre-assembled agent runtime that reduces costs 77% versus Claude Code on the same Claude Fable 5 model by optimizing context management, memory layering, prompt caching, and progressive skill loading, shifting evaluation focus to Model × Harness × Workload combinations.