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
Github Copilot
4
Incidents
10.0
Avg Severity
4
Critical
0
High
Top Failure Modes
Security Vulnerability
4
Worst Incident
STUPID-2026-0004 10/10Copilot autocompleted AWS credentials into public repository
Comparison Summary
| Metric | Claude Cowork | Github Copilot |
|---|---|---|
| Total Incidents | 1 | 4 |
| Avg Severity | 10.0/10 | 10.0/10 |
| Critical Incidents | 1 | 4 |
| Top Failure Mode | Destructive Action | Security Vulnerability |
Frequently Asked Questions
Is Claude Cowork or Github Copilot more reliable?
Based on StupidLLM data, Claude Cowork has 1 documented failures (avg severity 10.0/10) while Github Copilot has 4 (avg severity 10.0/10). Both agents show similar reliability profiles.
What are the main differences between Claude Cowork and Github Copilot failures?
Claude Cowork's most common failure mode is destructive action, while Github Copilot most commonly fails via security vulnerability. Claude Cowork has 1 critical incidents vs Github Copilot's 4.