Claude Code
8
Incidents
6.4
Avg Severity
3
Critical
2
High
Top Failure Modes
Destructive Action
3
Other
2
Security Vulnerability
2
Worst Incident
STUPID-2026-0003 10/10Claude Code ran rm -rf on test fixtures thinking they were temp files
Gitlab Duo
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0061 10/10A hidden comment made GitLab Duo leak private source code and inject rogue HTML
Comparison Summary
| Metric | Claude Code | Gitlab Duo |
|---|---|---|
| Total Incidents | 8 | 1 |
| Avg Severity | 6.4/10 | 10.0/10 |
| Critical Incidents | 3 | 1 |
| Top Failure Mode | Destructive Action | Security Vulnerability |
Frequently Asked Questions
Is Claude Code or Gitlab Duo more reliable?
Based on StupidLLM data, Claude Code has 8 documented failures (avg severity 6.4/10) while Gitlab Duo has 1 (avg severity 10.0/10). Claude Code shows better reliability based on average severity scores.
What are the main differences between Claude Code and Gitlab Duo failures?
Claude Code's most common failure mode is destructive action, while Gitlab Duo most commonly fails via security vulnerability. Claude Code has 3 critical incidents vs Gitlab Duo's 1.