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
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 | Aider | Github Copilot |
|---|---|---|
| Total Incidents | 1 | 4 |
| Avg Severity | 6.3/10 | 10.0/10 |
| Critical Incidents | 0 | 4 |
| Top Failure Mode | Wrong File | Security Vulnerability |
Frequently Asked Questions
Is Aider or Github Copilot more reliable?
Based on StupidLLM data, Aider has 1 documented failures (avg severity 6.3/10) while Github Copilot has 4 (avg severity 10.0/10). Aider shows better reliability based on average severity scores.
What are the main differences between Aider and Github Copilot failures?
Aider's most common failure mode is wrong file, while Github Copilot most commonly fails via security vulnerability. Aider has 0 critical incidents vs Github Copilot's 4.