Claude Cowork
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Destructive Action
1
Worst Incident
STUPID-2026-0043 10/10Claude Cowork deleted 15 years of family photos when asked only to tidy temporary Office files
Cursor
5
Incidents
6.1
Avg Severity
2
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Destructive Action
1
Infinite Loop
1
Worst Incident
STUPID-2026-0029 10/10Malicious cloned repository triggered code execution in Cursor on Windows
Comparison Summary
| Metric | Claude Cowork | Cursor |
|---|---|---|
| Total Incidents | 1 | 5 |
| Avg Severity | 10.0/10 | 6.1/10 |
| Critical Incidents | 1 | 2 |
| Top Failure Mode | Destructive Action | Security Vulnerability |
Frequently Asked Questions
Is Claude Cowork or Cursor more reliable?
Based on StupidLLM data, Claude Cowork has 1 documented failures (avg severity 10.0/10) while Cursor has 5 (avg severity 6.1/10). Cursor shows better reliability based on average severity scores.
What are the main differences between Claude Cowork and Cursor failures?
Claude Cowork's most common failure mode is destructive action, while Cursor most commonly fails via security vulnerability. Claude Cowork has 1 critical incidents vs Cursor's 2.