Every THE D[AI]LY BRIEF article on agent harness — enterprise AI analysis, benchmarks, vendor comparisons, and ROI frameworks for technology and business leaders. Updated as new coverage publishes.
A 176-setting controlled ablation shows the coding-agent harness moves success and cost more than the gap between the models being compared — and that one tool-surface flag reverses which model wins. A model swap is not a drop-in.
September 20, 2026 · 12 min read
A new arXiv paper measures the corrective value of a failed tool call in an agent transcript and finds it negative on every small model tested: repeat probability rises from 0.06 to 0.54. Clean-context retry was the worst harness tested; paraphrasing the failure removed 76% of the effect for free.
August 26, 2026 · 13 min read