Claude Code leads Coding Agent Index at 68; Codex matches cheaper at xhigh
Artificial Analysis’ Coding Agent Index puts Claude Code + Sonnet 5.5 at 68 vs Codex + GPT-6.1 Sol at 63; at matched xhigh both score 63, while Codex runs about $1.04 and 15.5 min per task versus $14.19 and 1.5 hours for Claude Code at max.
