TechCrunch recapping a simulated vending machine experiment from Andon Labs using GPT-5.6 Sol, Opus 5, and Kimi K3:

Sol soon realized it could gain an edge by convincing its competitors to collude on a price floor. The models were all buying drinks at $1.50 a bottle, and Sol proposed they agree to sell for no less than $2.15. It lured them with the promise that all of them would sell out in a couple of days at a profit.

But when the others agreed, Sol immediately stabbed them in the back by reducing its own price to $2.14.

There’s a lot more after that. Don’t make your AI the CEO quite yet.