Amazon Kiro vs Cursor
AI Agent Reliability Comparison
According to StupidLLM's incident database of 64 documented AI agent failures, Amazon Kiro has 1 incidents (avg severity 10.0/10) while Cursor has 5 (avg severity 6.1/10). Here's how these two AI coding agents compare on reliability, failure modes, and real-world risk.
Amazon Kiro
Top Failure Modes
Worst Incident
STUPID-2026-0046 10/10Cursor
Top Failure Modes
Worst Incident
STUPID-2026-0029 10/10Comparison 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's incident database, 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.
Which has more critical-severity failures?
Cursor has more critical failures (2 vs 1), indicating a higher likelihood of severe, production-impacting incidents.
What is the most dangerous failure mode for Amazon Kiro?
Amazon Kiro's most frequent failure mode is destructive action — its worst documented incident (STUPID-2026-0046) was rated 10/10 severity. Understanding these failure patterns helps teams decide whether Amazon Kiro is safe for their specific use case.
What is the most dangerous failure mode for Cursor?
Cursor's most frequent failure mode is security vulnerability — its worst documented incident (STUPID-2026-0029) was rated 10/10 severity. Understanding these failure patterns helps teams decide whether Cursor is safe for their specific use case.
Should I use Amazon Kiro or Cursor for production code?
Based on StupidLLM's reliability data, Cursor has a lower average failure severity (6.1/10 vs 10.0/10), making it the statistically safer choice for production environments. However, both agents have documented critical incidents — no AI coding agent is risk-free.
How many verified incidents does each agent have?
Amazon Kiro has 1 verified incidents out of 1 total, while Cursor has 5 verified out of 5. Verified incidents are confirmed against source evidence (GitHub PRs, bug reports, news articles), making them the most reliable data points in StupidLLM's database.
How does Amazon Kiro compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Amazon Kiro has 1 documented failures — placing it among the higher-risk agents in the database. See the full comparison matrix for context against all tracked agents.
How does Cursor compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Cursor has 5 documented failures — placing it in the mid-range for reliability. See the full comparison matrix for context against all tracked agents.