Tech companies are trying to change how we shop online using AI. AI agents could soon buy things like toothpaste for us. Companies like Perplexity are already testing this technology, but it's still not perfect. For example, a test purchase of toothpaste took hours to complete. This is because these agents use websites in the same way we do, so sometimes things sell out before the purchase goes through. Other companies, like Google and OpenAI, are also working on AI agents. But these new tools could have downsides. Retailers and advertisers might not like them because people might visit fewer websites. Also, there are privacy concerns because human checkers sometimes have to monitor what the AI is buying. On a different note, AI needs powerful computer chips, and companies are trying to improve them. One company, MIT, has made a chip that uses light to process information faster and more efficiently. However, Intel, a major chipmaker, is struggling to keep up with the demand for AI chips and its CEO recently stepped down. Meanwhile, the US government is taking action to both understand AI and regulate it. Lawmakers want to study AI's impact on finance and housing and are also limiting which Chinese companies can access American technology.