Chinese open-source models like Kimi and Deepseek are now dominant AI tools. American startups like Thinking Machines, Reflection AI and now Poolside are trying to challenge that.

Moonshot's founder trained at Carnegie Mellon. Now his Kimi K3 model is beating U.S. giants at their own game — and making Silicon Valley sweat.

"Meanwhile, sentiment toward AI stocks and hyperscalers' capex binge keeps weakening..."