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
Gemini Cli
3
Incidents
10.0
Avg Severity
3
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Scope Explosion
1
Destructive Action
1
Worst Incident
STUPID-2026-0027 10/10Gemini CLI silently executed arbitrary code from an untrusted repo (CVE-2026-12537, CVSS 10.0)
Comparison Summary
| Metric | Aider | Gemini Cli |
|---|---|---|
| Total Incidents | 1 | 3 |
| Avg Severity | 6.3/10 | 10.0/10 |
| Critical Incidents | 0 | 3 |
| Top Failure Mode | Wrong File | Security Vulnerability |
Frequently Asked Questions
Is Aider or Gemini Cli more reliable?
Based on StupidLLM data, Aider has 1 documented failures (avg severity 6.3/10) while Gemini Cli has 3 (avg severity 10.0/10). Aider shows better reliability based on average severity scores.
What are the main differences between Aider and Gemini Cli failures?
Aider's most common failure mode is wrong file, while Gemini Cli most commonly fails via security vulnerability. Aider has 0 critical incidents vs Gemini Cli's 3.