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
Microsoft Copilot
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0051 10/10EchoLeak: a zero-click email silently exfiltrated data from Microsoft 365 Copilot (CVE-2025-32711, CVSS 9.3)
Comparison Summary
| Metric | Manus | Microsoft Copilot |
|---|---|---|
| Total Incidents | 1 | 1 |
| Avg Severity | 7.5/10 | 10.0/10 |
| Critical Incidents | 0 | 1 |
| Top Failure Mode | Security Vulnerability | Security Vulnerability |
Frequently Asked Questions
Is Manus or Microsoft Copilot more reliable?
Based on StupidLLM data, Manus has 1 documented failures (avg severity 7.5/10) while Microsoft Copilot has 1 (avg severity 10.0/10). Manus shows better reliability based on average severity scores.
What are the main differences between Manus and Microsoft Copilot failures?
Manus's most common failure mode is security vulnerability, while Microsoft Copilot most commonly fails via security vulnerability. Manus has 0 critical incidents vs Microsoft Copilot's 1.