t01: Kanban board web service -- GPT-6.1 Sol vs Claude Opus 5.5
Build a small kanban board web service in Node.js from its README, standard library only.
Opus: 68.7 s. Sol: 319.0 s. Sol took 4.6 times as long.
Opus (s)Sol (s)
Hidden tests: Opus 15 of 15, Sol 15 of 15.
Blind judge pick: Opus (clear).
"Solution B [Opus] uses a much more elegant architecture, featuring a declarative router and lazy body parsing to cleanly enforce the 404-over-400 precedence rule. Furthermore, calculating positions dynamically from array indices completely eliminates the need for manual renumbering and prevents a whole class of synchronization bugs."
"An exceptionally clean and robust implementation that elegantly handles routing, validation, and edge cases using only the Node standard library."