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BUILDING-CUSTOM-ASSISTANTS5 MIN READ

Use Projects for Living Workspaces, GPTs for Reusable Roles

Choose between a project workspace and a reusable GPT based on how context changes over time.

The wrong assistant surface creates setup work you pay every single week. A reusable role Choose a custom GPT or a stable system-prompted assistant when the key value is consistent behavior: tone, workflow, output structure, or a narrow expert role that should work across many separate conversations. A living workspace Choose a Claude Project when the key value is persistent context: files, notes, research, and chats that belong to one ongoing stream of work. The assistant is not just “smart”; it is anchored in the same workspace every time. The maintenance signal If people keep re-uploading the same files, pasting…

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