Claude Projects: keeping a long research task in one place

When research stretches over a week, the most expensive part is re-explaining the context in every new chat. Projects solve exactly that: you add documents and instructions once, and every chat inside the project sees them.

What a project holds

• Project knowledge — files the model considers in every answer: specs, notes, spreadsheet exports.
• Instructions — standing rules: tone, output format, language, constraints.
• Chats — separate conversations that share context without cluttering each other.

Set it up in 10 minutes

1. Create a project for one task, not a whole topic. “Comparing CRMs for an NGO” works better than “Work”.
2. Add 3–5 key documents. More isn’t always better: irrelevant files dilute the answers.
3. Write a 5–7 line instruction: who you are, what you need, in what format.
4. Open a new chat inside the project for every sub-question.

Where it won’t help

For a one-off task a project is just an extra step. And if your documents change often, you’ll have to re-upload them — the model doesn’t track the original file.