{"i":5,"slug":"coding-agents-head-to-head","chart":{"id":"coding-agents-pass-rate","title":"Coding sessions that passed every hidden check","subtitle":"A pass needs every hidden check · 12 sessions per agent · 95% Wilson intervals","kind":"dot-range","unit":"rate","whisker":"ci95","yLabel":"Passed","viz":"IntervalDotPlot","series":[{"name":"Passed every hidden check","points":{"$k":["label","value","lo","hi","n"],"$r":[["Claude Sonnet 5.5 · Claude Code",1,0.7575,1,12],["Claude Opus 5.5 · Claude Code",1,0.7575,1,12],["GPT-6.1 Sol (medium, tester’s AGENTS.md) · Codex CLI",1,0.7575,1,12]]}}],"note":"6 tasks × 2 repetitions per agent. All 36 sessions passed, so the chart sits at its ceiling: this task set cannot rank the agents on quality. Before the first session, every base repository failed its hidden checks and every reference patch passed them.","sourceIds":["agent-coding-agents"]}}