In Part 1, we compared Chat to Dory and (Co)work to Spock. Chat feels conversational and creative. (Co)work feels structured and logical. But this is not just a personality difference. It is also a feature difference. 🐠 Chat is primarily where you talk with ChatGPT or Claude. You ask a question. Explore an idea. Refine responses. Chat can search the web, use enabled connectors, analyze uploaded files, and create content. However, you are driving the process one response at a time. 🖖 (Co)work is designed to complete work. You can point it toward a working folder, give it access to relevant tools, and assign a broader task. For example, (Co)work can: - Read multiple files from a connected folder - Create new documents and reports - Update or reorganize existing files - Rename, sort, and categorize documents - Gather information from connected applications - Use a browser or desktop application when required - Complete a task involving several steps - Run recurring scheduled tasks The practical difference is this: Chat may help you write the plan; where (Co)work can open the working files, follow the plan, and produce the deliverable. Imagine that I am working on a book. In Chat, I might say: “Help me develop the central argument for this chapter.” We can brainstorm, challenge ideas, test language, and find the story. In (Co)work, I might say: “Review the chapters in this folder, identify repeated sections, update the chapter outline, and create a revised draft.” One helps me think through the work. The other can work across the actual materials. They are designed for different purposes, that is why they feel different. Chat is optimized around the conversation - scratch pad of ideas. (Co)work is optimized around the assignment - execution of ideas. Of course, the lines continue to overlap. For example, Chat can use tools, and (Co)work can brainstorm. But their centers of gravity are different.

In Part 1 and Part 2, we used 🐠 Dory and 🖖Spock to explain the difference between Chat and (Co)work. That leads to the next logical question: 🤔 Okay, but which Spock do I use—ChatGPT’s Work or Claude’s Cowork? Personally, I use and like both. The honest answer is that ChatGPT Work and Claude Cowork are built around the same core idea: Give the AI a goal, provide the right context, and let it complete the work. Both can research information, analyze files, create documents, build spreadsheets and presentations, use connected tools, and work through assignments involving several steps. The meaningful difference is where each one feels most at home. Claude Cowork: Best When Your Work Lives in Files and Folders Claude Cowork is especially comfortable when your work lives in files and folders. You can connect a folder on your computer and ask Claude to: - Read and compare several files - Edit or create documents - Rename and reorganize files - Build spreadsheets and presentations - Research missing information - Deliver the finished materials for your review It can work directly with the material inside that folder rather than requiring you to open each file, copy the information into a conversation, and direct every step. Claude Cowork is no longer limited to the desktop. Cowork sessions can also run remotely and be accessed through web and mobile as availability rolls out (more on that later). However, its ability to work with selected local folders remains one of its most recognizable strengths. Claude can also use connectors and plugins: A Claude plugin can package skills, connectors, and sub-agents into a reusable workflow. When a direct connector or tool is not available, Claude can use your computer by navigating applications, clicking, and typing. ⚠️ Note: Claude Cowork requires a Pro level subscription. ChatGPT Work: Best When Your Work Lives Across Connected Apps ChatGPT Work is especially comfortable when your work is spread across connected business tools.