AI assistants are now helping millions of people write, research, code, and search the web, making it harder than ever to know which one is actually worth using. That’s especially true for Grok, which has gone from being Elon Musk’s experimental chatbot to the flagship AI product inside a much larger SpaceXAI ecosystem. We’ve spent the past year comparing the biggest AI chatbots across everyday research, writing, and coding, and in our Grok AI r…