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
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 | Github Copilot | Gitlab Duo |
|---|---|---|
| Total Incidents | 4 | 1 |
| Avg Severity | 10.0/10 | 10.0/10 |
| Critical Incidents | 4 | 1 |
| Top Failure Mode | Security Vulnerability | Security Vulnerability |
Frequently Asked Questions
Is Github Copilot or Gitlab Duo more reliable?
Based on StupidLLM data, Github Copilot has 4 documented failures (avg severity 10.0/10) while Gitlab Duo has 1 (avg severity 10.0/10). Both agents show similar reliability profiles.
What are the main differences between Github Copilot and Gitlab Duo failures?
Github Copilot's most common failure mode is security vulnerability, while Gitlab Duo most commonly fails via security vulnerability. Github Copilot has 4 critical incidents vs Gitlab Duo's 1.