Claude is now four products sharing one model family: Chat, Cowork, Code, and Design. Pick by task, not by name. The table below maps 12 common knowledge-work and developer tasks to the right surface, with one sentence on why.
| Task | Surface | Why |
|---|---|---|
| Fact-check a claim before posting | Chat | No files, no agent, fastest answer. |
| Brainstorm titles for a Substack post | Chat | Iteration speed wins. |
| Sort a folder of receipts into a spreadsheet | Cowork | Local files, multi-step, no code. |
| Update a Notion page from a folder of PDFs | Cowork | Connectors plus file access. |
| Schedule a weekly competitor digest | Cowork | Scheduled tasks, no terminal. |
| Refactor my Substack site repo | Code | Reads codebase, edits files, commits. |
| Migrate a Python service to Go | Code | The Wiz use case, terminal-native. |
| Write a CI workflow and a test suite | Code | IDE-level work. |
| Build a sponsor outreach pitch deck | Design | Visual first-draft, exports to PPTX. |
| Make a one-pager for a Gumroad product | Design | Layout, type, image direction. |
| Prototype a landing page hero section | Design | Then hand off to Code with a single instruction. |
| Edit a deck after my designer added comments | Design | Slider and comment-based refinement. |
Source: Product with Attitude. Tested April 2026.