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)
Multiple Llms
3
Incidents
3.8
Avg Severity
0
Critical
0
High
Top Failure Modes
Hallucination
3
Worst Incident
STUPID-2026-0033 6.4/10Slopsquatting: LLMs hallucinate package names attackers pre-register (react-codeshift, unused-imports)
Comparison Summary
| Metric | Microsoft Copilot | Multiple Llms |
|---|---|---|
| Total Incidents | 1 | 3 |
| Avg Severity | 10.0/10 | 3.8/10 |
| Critical Incidents | 1 | 0 |
| Top Failure Mode | Security Vulnerability | Hallucination |
Frequently Asked Questions
Is Microsoft Copilot or Multiple Llms more reliable?
Based on StupidLLM data, Microsoft Copilot has 1 documented failures (avg severity 10.0/10) while Multiple Llms has 3 (avg severity 3.8/10). Multiple Llms shows better reliability based on average severity scores.
What are the main differences between Microsoft Copilot and Multiple Llms failures?
Microsoft Copilot's most common failure mode is security vulnerability, while Multiple Llms most commonly fails via hallucination. Microsoft Copilot has 1 critical incidents vs Multiple Llms's 0.