Macworld The AI race is in full swing, and OpenAI just fired its latest salvo with its “Spring Update” announcements. The most significant new part is a new model, ChatGPT-4o (the “o” stands for “omni”), which is faster and smarter with better multi-model capabilities, and importantly, available to all users, not just those who subscribe. In addition, there are new tools for developers, a new GPT Store to more easily find customized GPTs, and crucially, a new Mac app (a Windows app will come later this year). ChatGPT-4oThe focus of GPT-4o seems to be on making it easier to use for more people,…