Amazon Kiro
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Destructive Action
1
Worst Incident
STUPID-2026-0046 10/10Amazon's Kiro agent deleted production, causing a 13-hour AWS outage and ~6.3M lost Amazon.com orders
Cursor
5
Incidents
6.1
Avg Severity
2
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Destructive Action
1
Infinite Loop
1
Worst Incident
STUPID-2026-0029 10/10Malicious cloned repository triggered code execution in Cursor on Windows
Comparison Summary
| Metric | Amazon Kiro | Cursor |
|---|---|---|
| Total Incidents | 1 | 5 |
| Avg Severity | 10.0/10 | 6.1/10 |
| Critical Incidents | 1 | 2 |
| Top Failure Mode | Destructive Action | Security Vulnerability |
Frequently Asked Questions
Is Amazon Kiro or Cursor more reliable?
Based on StupidLLM data, Amazon Kiro has 1 documented failures (avg severity 10.0/10) while Cursor has 5 (avg severity 6.1/10). Cursor shows better reliability based on average severity scores.
What are the main differences between Amazon Kiro and Cursor failures?
Amazon Kiro's most common failure mode is destructive action, while Cursor most commonly fails via security vulnerability. Amazon Kiro has 1 critical incidents vs Cursor's 2.