AI reasoning models were supposed to be the industry’s next leap, promising smarter systems able to tackle more complex problems. Now, a string of research is calling that into question. Researchers at Salesforce, Anthropic, and other AI labs have also raised red flags. The constraints on reasoning could have major implications for the AI trade, businesses spending billions on AI, and even the timeline to superhuman intelligence. CNBC's Deirdre Bosa explores what this means for the AI industry.