Aider
1
Incidents
6.3
Avg Severity
0
Critical
0
High
Top Failure Modes
Wrong File
1
Worst Incident
STUPID-2026-0005 6.3/10Aider modified wrong file — edited production config instead of dev config
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
Comparison Summary
| Metric | Aider | Devin |
|---|---|---|
| Total Incidents | 1 | 12 |
| Avg Severity | 6.3/10 | 4.9/10 |
| Critical Incidents | 0 | 3 |
| Top Failure Mode | Wrong File | Scope Explosion |
Frequently Asked Questions
Is Aider or Devin more reliable?
Based on StupidLLM data, Aider has 1 documented failures (avg severity 6.3/10) while Devin has 12 (avg severity 4.9/10). Devin shows better reliability based on average severity scores.
What are the main differences between Aider and Devin failures?
Aider's most common failure mode is wrong file, while Devin most commonly fails via scope explosion. Aider has 0 critical incidents vs Devin's 3.