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
Microsoft Copilot
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0051 10/10EchoLeak: a zero-click email silently exfiltrated data from Microsoft 365 Copilot (CVE-2025-32711, CVSS 9.3)
Comparison Summary
| Metric | Devin | Microsoft Copilot |
|---|---|---|
| Total Incidents | 12 | 1 |
| Avg Severity | 4.9/10 | 10.0/10 |
| Critical Incidents | 3 | 1 |
| Top Failure Mode | Scope Explosion | Security Vulnerability |
Frequently Asked Questions
Is Devin or Microsoft Copilot more reliable?
Based on StupidLLM data, Devin has 12 documented failures (avg severity 4.9/10) while Microsoft Copilot has 1 (avg severity 10.0/10). Devin shows better reliability based on average severity scores.
What are the main differences between Devin and Microsoft Copilot failures?
Devin's most common failure mode is scope explosion, while Microsoft Copilot most commonly fails via security vulnerability. Devin has 3 critical incidents vs Microsoft Copilot's 1.