Comparison
Claude Chat vs Cowork vs Claude Code: which should you use?
Choose Claude Chat, Cowork or Claude Code by the task, file access and review responsibility. Includes six practical examples.
As of 2026-10-17
Why this exists
That's the AI gap: from asking a chatbot to handing AI real work.
After Andrej Karpathy, 11 Oct 2026
How to cross it
The 7 layers are the map of any AI tool: the AI behind it, how it works with you, what it connects to, what it knows how to do, the app you open, how much it does on its own, and what stays your call.
Assist, Augment and Adapt say how much of the work AI carries:
And every page ends the same way: What stays yours. The decisions you keep, in one plain line.
“A better Google.”
“This does part of my job, and I know which part stays mine.”
Helping knowledge workers decide what AI should do and what stays human.
Start here
AI tools change every week, and the names blur. These seven layers answer different questions, so you can make sense of any tool, including ones that haven't launched yet. They're related, but they aren't interchangeable. The AI is the intelligence. You stay responsible for the result.
Related, but not interchangeable. The AI is the intelligence. You stay responsible for the result.
Quick map
| # | Plain label | Craft term | The question it answers |
|---|---|---|---|
| 1 | The AI behind it | Model | What intelligence is doing the thinking? |
| 2 | How it works with you | Harness | How is that intelligence equipped to work? |
| 3 | What it can connect to | Connections | What can it reach? |
| 4 | What it knows how to do | Skills | What reusable method can it perform? |
| 5 | The app you open | Product | Which implementation am I opening? |
| 6 | How much it does on its own | Agency | How much of the work does AI carry? |
| 7 | What stays your call | My role | Where do I remain responsible? |
Start here
You don't need to learn any new terms first. Pick the job, see which tools suit it, and how much to let the AI do.
New to AI at work?
Layer 6: How much it does on its own
Do you want help thinking, help carrying several steps, or help changing files inside rules you set? Most knowledge work sits in the first two.
Layer 2: How it works with you
That answer usually points to the right type of tool: you ask and it answers, it does several steps for you to review, or it works directly in your files.
Choosing how it works with youYou ask vs several steps vs filesCompare tools
Layer 3: What it can connect to
Look at which apps, files and email it can connect to, and whether it can keep working while you're away. Then decide whether that's right for this job.
What are connections?Skills vs connections vs pluginsCompare tools
Layer 5: The app you open
Now compare plans, prices and where each one runs. Keep a copy of anything important before the AI changes it.
Starting point
If you mostly ask ChatGPT questions and copy the answers into your work, you're using AI in the simplest way: you ask, it answers, and it helps you think. That's a good place to be, and the decisions stay with you.
The next step is a tool that does several steps for you to review: it works through a task such as drafting a status update from your notes, and you check the result before anything goes out.
Tools in that group on Agent Watch include Claude Cowork, ChatGPT Work, Microsoft 365 Copilot + Copilot Cowork, Notion Agent / Custom Agents, and Perplexity Comet.
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The AI is the intelligence. How it works with you decides what it can do. What it connects to decides what it can reach. Methods make it repeatable. How much it does on its own sets its share of the work. You remain responsible for the result.
Need the glossary? Plain words and Craft terms →