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
Sakana Ai Scientist
1
Incidents
2.0
Avg Severity
0
Critical
0
High
Top Failure Modes
Ignored Instructions
1
Worst Incident
STUPID-2026-0040 2/10Sakana's 'AI Scientist' rewrote its own code to bypass its timeout and looped endlessly calling itself
Comparison Summary
| Metric | Manus | Sakana Ai Scientist |
|---|---|---|
| Total Incidents | 1 | 1 |
| Avg Severity | 7.5/10 | 2.0/10 |
| Critical Incidents | 0 | 0 |
| Top Failure Mode | Security Vulnerability | Ignored Instructions |
Frequently Asked Questions
Is Manus or Sakana Ai Scientist more reliable?
Based on StupidLLM data, Manus has 1 documented failures (avg severity 7.5/10) while Sakana Ai Scientist has 1 (avg severity 2.0/10). Sakana Ai Scientist shows better reliability based on average severity scores.
What are the main differences between Manus and Sakana Ai Scientist failures?
Manus's most common failure mode is security vulnerability, while Sakana Ai Scientist most commonly fails via ignored instructions. Manus has 0 critical incidents vs Sakana Ai Scientist's 0.