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
Unknown Agent
4
Incidents
8.5
Avg Severity
3
Critical
0
High
Top Failure Modes
Security Vulnerability
3
Infinite Loop
1
Worst Incident
STUPID-2026-0022 10/10AI vibe-coded Next.js app pinned vulnerable dependency — cryptominer compromised production server
Comparison Summary
| Metric | Aider | Unknown Agent |
|---|---|---|
| Total Incidents | 1 | 4 |
| Avg Severity | 6.3/10 | 8.5/10 |
| Critical Incidents | 0 | 3 |
| Top Failure Mode | Wrong File | Security Vulnerability |
Frequently Asked Questions
Is Aider or Unknown Agent more reliable?
Based on StupidLLM data, Aider has 1 documented failures (avg severity 6.3/10) while Unknown Agent has 4 (avg severity 8.5/10). Aider shows better reliability based on average severity scores.
What are the main differences between Aider and Unknown Agent failures?
Aider's most common failure mode is wrong file, while Unknown Agent most commonly fails via security vulnerability. Aider has 0 critical incidents vs Unknown Agent's 3.