{"i":5,"slug":"coding-agents-head-to-head","chart":{"id":"coding-agents-cost-per-pass","title":"List-price cost per passing coding session (calculation)","subtitle":"Reported tokens of all 12 sessions × list price, divided by the passes","kind":"bar","unit":"usd","yLabel":"USD per pass","viz":"CostBars","series":[{"name":"List-price cost per pass","points":{"$k":["label","value","n"],"$r":[["Claude Sonnet 5.5 · Claude Code",0.085,12],["Claude Opus 5.5 · Claude Code",0.2229,12],["GPT-6.1 Sol (medium, tester’s AGENTS.md) · Codex CLI",0.0978,12]]}}],"note":"Calculation, not a bill: both CLIs ran on flat subscriptions. Claude cache writes are priced at 2× input, as in the other studies (Claude Code’s own estimate gives the same totals); Codex cached input at its cache-read price. Codex input includes its own system prompt and, here, the tester’s AGENTS.md.","sourceIds":["agent-coding-agents","calc-repricing","price-anthropic","price-openai"]}}