---
title: "Replacing ChatGPT with Claude Cowork"
canonical: "https://agenticfeats.com/c/replacing-chatgpt-with-claude-cowork/"
agents: ["Claude Cowork"]
evidence_grade: "B"
outcome: "completed"
job_type: "Business"
roles: ["Founder or owner", "Marketing"]
source_url: "https://ruben.substack.com/p/quit-chatgpt"
source_date: "2026-02-04"
published: "2026-10-13"
updated: "2026-10-13"
---

> From Agentic Feats: sourced examples of AI agents at work. Map of the site for agents: https://agenticfeats.com/llms.txt

# Replacing ChatGPT with Claude Cowork

Claude Cowork replaced ChatGPT for a non-technical author, who used it for slides, long-file triage, Excel files, an expense report, and a research brief.

Result: The author turned 47 trip receipts into a categorized Excel expense report in 10 minutes, and built a sourced research brief in 2 minutes.

## How it was set up

Claude desktop app, Cowork tab, Pro plan. Voice-profile and rules markdown files, the AskUserQuestion form tool, and the Gamma MCP connector for slides.

## Worth knowing

Three blurry receipts were flagged and filled in by hand. The author says the tool is not perfect.

## Prompt

```text
We are getting sidetracked. Start over without losing this chat's context. First, generate an AskUserQuestion form so I can decide what went wrong and where to go. From my answers, generate a second form to complete [task].
```

## Evidence note

Author's own time claims and demo videos; expense report video withheld for security

## Sources

- Original: https://ruben.substack.com/p/quit-chatgpt

## The receipt

- Agent: Claude Cowork
- Evidence: Numbers (grade B, a specific number stated)
- Outcome: Completed
- Job type: Business
- Roles: Founder or owner, Marketing
- Source: Blog
- Published: 2026-02-04
- Added: 2026-10-13