{"i":3,"slug":"model-head-to-head","chart":{"id":"h2h-first-useful-latency","title":"Time to first useful output","subtitle":"Median per configuration; whiskers = fastest and slowest call","kind":"dot-range","unit":"seconds","yLabel":"Seconds","series":[{"name":"Time to first useful output","points":{"$k":["label","value","lo","hi","n","highlight"],"$r":[["Claude Fable 5.1 · Claude Code",1.2,0.95,7.9,15,true],["Claude Sonnet 5.5 · Claude Code",1.56,0.99,6.39,15,true],["Claude Opus 5.5 (high) · Claude Code",2.04,1.4,9.94,15,true],["Claude Opus 5.5 · Claude Code",1.92,1.56,7.23,15,true],["Claude Opus 5.5 (low) · Claude Code",2.39,1.45,4.9,15,true],["Claude Haiku 4.5 · Claude Code",3.63,2.78,22.27,15,true],["GPT-6.1 Sol (high) · Codex CLI",5.32,3.64,16.37,15,false],["GPT-6.1 Sol (medium) · Codex CLI",5.05,3.36,17.82,15,false],["GPT-6.1 Sol (low) · Codex CLI",5.14,4.02,8.5,10,false]]}}],"note":"One host, one network, one day. Whiskers are a range, not a confidence interval.","sourceIds":["agent-provider-h2h"]}}