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)
Windsurf
1
Incidents
7.5
Avg Severity
0
Critical
1
High
Top Failure Modes
Ignored Instructions
1
Worst Incident
STUPID-2026-0007 7.5/10Windsurf ignored .gitignore and committed node_modules and .env
Comparison Summary
| Metric | Gemini Cli | Windsurf |
|---|---|---|
| Total Incidents | 3 | 1 |
| Avg Severity | 10.0/10 | 7.5/10 |
| Critical Incidents | 3 | 0 |
| Top Failure Mode | Security Vulnerability | Ignored Instructions |
Frequently Asked Questions
Is Gemini Cli or Windsurf more reliable?
Based on StupidLLM data, Gemini Cli has 3 documented failures (avg severity 10.0/10) while Windsurf has 1 (avg severity 7.5/10). Windsurf shows better reliability based on average severity scores.
What are the main differences between Gemini Cli and Windsurf failures?
Gemini Cli's most common failure mode is security vulnerability, while Windsurf most commonly fails via ignored instructions. Gemini Cli has 3 critical incidents vs Windsurf's 0.