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  ...