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
Multiple Llms
3
Incidents
3.8
Avg Severity
0
Critical
0
High
Top Failure Modes
Hallucination
3
Worst Incident
STUPID-2026-0033 6.4/10Slopsquatting: LLMs hallucinate package names attackers pre-register (react-codeshift, unused-imports)
Comparison Summary
| Metric | Claude Cowork | Multiple Llms |
|---|---|---|
| Total Incidents | 1 | 3 |
| Avg Severity | 10.0/10 | 3.8/10 |
| Critical Incidents | 1 | 0 |
| Top Failure Mode | Destructive Action | Hallucination |
Frequently Asked Questions
Is Claude Cowork or Multiple Llms more reliable?
Based on StupidLLM data, Claude Cowork has 1 documented failures (avg severity 10.0/10) while Multiple Llms has 3 (avg severity 3.8/10). Multiple Llms shows better reliability based on average severity scores.
What are the main differences between Claude Cowork and Multiple Llms failures?
Claude Cowork's most common failure mode is destructive action, while Multiple Llms most commonly fails via hallucination. Claude Cowork has 1 critical incidents vs Multiple Llms's 0.