Devin
12
Incidents
4.9
Avg Severity
3
Critical
0
High
Top Failure Modes
Scope Explosion
2
Destructive Action
2
Infinite Loop
2
Worst Incident
STUPID-2026-0001 10/10Devin deleted all migration files during auth refactor
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 | Devin | Github Copilot |
|---|---|---|
| Total Incidents | 12 | 4 |
| Avg Severity | 4.9/10 | 10.0/10 |
| Critical Incidents | 3 | 4 |
| Top Failure Mode | Scope Explosion | Security Vulnerability |
Frequently Asked Questions
Is Devin or Github Copilot more reliable?
Based on StupidLLM data, Devin has 12 documented failures (avg severity 4.9/10) while Github Copilot has 4 (avg severity 10.0/10). Devin shows better reliability based on average severity scores.
What are the main differences between Devin and Github Copilot failures?
Devin's most common failure mode is scope explosion, while Github Copilot most commonly fails via security vulnerability. Devin has 3 critical incidents vs Github Copilot's 4.