Cline
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0030 10/10Clinejection: an AI issue-triage workflow enabled arbitrary code execution on the CI runner
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 | Cline | Windsurf |
|---|---|---|
| Total Incidents | 1 | 1 |
| Avg Severity | 10.0/10 | 7.5/10 |
| Critical Incidents | 1 | 0 |
| Top Failure Mode | Security Vulnerability | Ignored Instructions |
Frequently Asked Questions
Is Cline or Windsurf more reliable?
Based on StupidLLM data, Cline has 1 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 Cline and Windsurf failures?
Cline's most common failure mode is security vulnerability, while Windsurf most commonly fails via ignored instructions. Cline has 1 critical incidents vs Windsurf's 0.