Post by Andon Labs on X
Andon Labs@andonlabs
XIn Vending-Bench Arena (the multiplayer version of Vending-Bench with competition dynamics), GPT-5.5 actually beats Opus 4.7.
Opus 4.7 showed similar behavior to Opus 4.6: lying to suppliers and stiffing customers on refunds. GPT-5.5's tactics were clean, and it still won.

1.6K likes51 repliesPosted Apr 23, 2026