Better Harness Cuts Costs by 40%
ZainHasan6 · x · 2026-07-19
This post quotes a comparison chart showing significant improvements in task performance after better harness customization on the same model. Key results include: - Cost per task dropped from **$0.21** to **$0.12**, down **41%** - Time per task dropped from **48s** to **27s**, down **44%** - Tokens per task dropped from **14.2k** to **8.8k**, down **38%** - Quality increased from **0.78** to **0.81**, remaining stable or slightly improving - **Quality/cost ratio improved by 82%** - Completions per million tokens increased from **54.9** to **92**, up **68%** The author wants to emphasize that good harness customization isn't a trivial detail, but a key engineering lever that directly leads to lower costs, lower latency, and higher cost-effectiveness.
Related event: Databricks Reveals Optimized Harness Drastically Cuts AI Costs(4 posts)→
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