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Claude Opus 5 vs GPT-5.5

Same seed — a controlled comparison: the first differing action is where behavior split.

1/7
cash gap now: $20.50
Claude Opus 5$432.45
Day 1cola · qty 35$1.75✕ sold outcandy · qty 34$1.25✕ sold outchips · qty 35$1.75✕ sold outwater · qty 34$1.00✕ sold out$432.45restockz z z⚠ supplier switchsupplier_4: paid $0.56/unit vs $0.35 quoted (+$8.40)
GPT-5.5$452.95
Day 1cola · qty 26$1.75✕ sold outcandy · qty 26$1.25✕ sold outchips · qty 22$2.00✕ sold outwater · qty 30$1.00✕ sold out$452.95restockz z z⚠ supplier switch