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
Claude Code
8
Incidents
6.4
Avg Severity
3
Critical
2
High
Top Failure Modes
Destructive Action
3
Other
2
Security Vulnerability
2
Worst Incident
STUPID-2026-0003 10/10Claude Code ran rm -rf on test fixtures thinking they were temp files
Comparison Summary
| Metric | Amazon Kiro | Claude Code |
|---|---|---|
| Total Incidents | 1 | 8 |
| Avg Severity | 10.0/10 | 6.4/10 |
| Critical Incidents | 1 | 3 |
| Top Failure Mode | Destructive Action | Destructive Action |
Frequently Asked Questions
Is Amazon Kiro or Claude Code more reliable?
Based on StupidLLM data, Amazon Kiro has 1 documented failures (avg severity 10.0/10) while Claude Code has 8 (avg severity 6.4/10). Claude Code shows better reliability based on average severity scores.
What are the main differences between Amazon Kiro and Claude Code failures?
Amazon Kiro's most common failure mode is destructive action, while Claude Code most commonly fails via destructive action. Amazon Kiro has 1 critical incidents vs Claude Code's 3.