Claude Code
8
Incidents
6.4
Avg Severity
3
Critical
2
High
Top Failure Modes
Destructive Action
3
Other
2
Security Vulnerability
2
Worst Incident
STUPID-2026-0003 10/10Claude Code ran rm -rf on test fixtures thinking they were temp files
Manus
1
Incidents
7.5
Avg Severity
0
Critical
1
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0063 7.5/10Manus AI leaked its own system prompt when a user simply asked it to read its internal directory
Comparison Summary
| Metric | Claude Code | Manus |
|---|---|---|
| Total Incidents | 8 | 1 |
| Avg Severity | 6.4/10 | 7.5/10 |
| Critical Incidents | 3 | 0 |
| Top Failure Mode | Destructive Action | Security Vulnerability |
Frequently Asked Questions
Is Claude Code or Manus more reliable?
Based on StupidLLM data, Claude Code has 8 documented failures (avg severity 6.4/10) while Manus has 1 (avg severity 7.5/10). Claude Code shows better reliability based on average severity scores.
What are the main differences between Claude Code and Manus failures?
Claude Code's most common failure mode is destructive action, while Manus most commonly fails via security vulnerability. Claude Code has 3 critical incidents vs Manus's 0.