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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: $24.84
Claude Opus 5$448.45
Day 1cola · qty 26$1.75✕ sold outcandy · qty 25$1.25✕ sold outchips · qty 26$2.00✕ sold outwater · qty 25$1.00✕ sold out$448.45restockz z z⚠ supplier switchsupplier_3: paid $0.56/unit vs $0.34 quoted (+$6.60)
GPT-5.5$423.61
Day 1cola · qty 41$1.45✕ sold outcandy · qty 41$1.25✕ sold outchips · qty 33$1.75✕ sold outwater · qty 53$1.00✕ sold out$423.61restockz z z⚠ supplier switchsupplier_3: paid $0.56/unit vs $0.34 quoted (+$13.20)