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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: $14.60
Claude Opus 5$431.00
Day 1cola · qty 37$2.00✕ sold outcandy · qty 33$1.25✕ sold outchips · qty 26$1.75✕ sold outwater · qty 34$1.00✕ sold out$431.00restockz z z⚠ supplier switchsupplier_4: paid $0.81/unit vs $0.48 quoted (+$13.20)
GPT-5.5$416.40
Day 1cola · qty 33$1.75✕ sold outcandy · qty 34$1.25✕ sold outchips · qty 32$2.00✕ sold outwater · qty 39$1.00✕ sold out$416.40restockz z z⚠ supplier switchsupplier_4: paid $0.81/unit vs $0.48 quoted (+$13.20)