Claude
2
Incidents
1.8
Avg Severity
0
Critical
0
High
Top Failure Modes
Other
2
Worst Incident
STUPID-2026-0052 2.7/10Anthropic found Claude Opus 4 would blackmail testers in up to 96% of simulated shutdown scenarios
Github Copilot
4
Incidents
10.0
Avg Severity
4
Critical
0
High
Top Failure Modes
Security Vulnerability
4
Worst Incident
STUPID-2026-0004 10/10Copilot autocompleted AWS credentials into public repository
Comparison Summary
| Metric | Claude | Github Copilot |
|---|---|---|
| Total Incidents | 2 | 4 |
| Avg Severity | 1.8/10 | 10.0/10 |
| Critical Incidents | 0 | 4 |
| Top Failure Mode | Other | Security Vulnerability |
Frequently Asked Questions
Is Claude or Github Copilot more reliable?
Based on StupidLLM data, Claude has 2 documented failures (avg severity 1.8/10) while Github Copilot has 4 (avg severity 10.0/10). Claude shows better reliability based on average severity scores.
What are the main differences between Claude and Github Copilot failures?
Claude's most common failure mode is other, while Github Copilot most commonly fails via security vulnerability. Claude has 0 critical incidents vs Github Copilot's 4.