AI Newsletter 日报

View this post on the web at https://opinionai.substack.com/p/claude-vs-chatgpt-here-is-where-i I think a lot of us are making one small mistake with AI. We find one tool we like, maybe ChatGPT or Claude, and then slowly start using it for everything. Writing, research, coding, planning, files, images, business work, random questions. Everything goes into the same box. That worked when these were mostly chatbots. It does not work nearly as well anymore. September alone gave us GPT-6 Astra, Claude Opus 5.5, Claude Sonnet 5.5, and GPT-6.1 Sol. These models can search, use tools, work through huge amounts of context, write code, handle files, and stay on a job much longer than the AI we were using even a year ago. The funny part is that as Claude and ChatGPT become more powerful, I find myself using them more differently, not less. And once this difference clicks, choosing between them becomes much easier. One simple rule changed this for me Here is the easiest way I can explain it. I use Claude when I want to go deeper into one piece of work. Give it a long document, a serious writing brief, a messy problem, a big codebase, a pile of research, or something that needs ten instruction