Surge AI Benchmark: Higher Thinking Effort Beat Every Coding Agent Harness Tested

rseroter · x · 2026-11-10

Surge AI benchmarked popular coding-agent setups (Opus 5.5 in Claude Code, sudo L7 benchmark). Vanilla Claude Code at xhigh thinking gained +11.3 over baseline at 3.5x cost, beating Superpowers (+2.4), /goal +/code-review (+3.3), and Compound Engineering (+1.8 at 8x cost). A 37-skill harness spawning 17 review agents still missed that a confirmation email leaked a Zoom passcode to unpaid registrants. Takeaway: elaborate harness bureaucracies often add less than simply raising thinking effort.

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