An AI trading model just proved it can walk the walk. Grok 4.20 recently dominated a live stock trading competition, beating out other AI systems in head-to-head matchups. This matters because it's one of the first real tests showing whether advanced AI can actually turn predictions into profits in live market conditions. The model's performance in Alpha Arena Season raises interesting questions about the future of algorithmic trading and whether AI-driven strategies could reshape how traders approach market opportunities. Whether this translates to sustained results remains to be seen, but it's a significant signal that AI capabilities are moving beyond theoretical discussions into practical market applications.