Amazon Q vs Cursor
AI Agent Reliability Comparison
According to StupidLLM's incident database of 64 documented AI agent failures, Amazon Q 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 Q
Top Failure Modes
Worst Incident
STUPID-2026-0035 10/10Cursor
Top Failure Modes
Worst Incident
STUPID-2026-0029 10/10Comparison Summary
| Metric | Amazon Q | Cursor |
|---|---|---|
| Total Incidents | 1 | 5 |
| Avg Severity | 10.0/10 | 6.1/10 |
| Critical Incidents | 1 | 2 |
| Top Failure Mode | Security Vulnerability | Security Vulnerability |
Frequently Asked Questions
Is Amazon Q or Cursor more reliable?
Based on StupidLLM's incident database, Amazon Q 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 Q and Cursor failures?
Amazon Q's most common failure mode is security vulnerability, while Cursor most commonly fails via security vulnerability. Amazon Q 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 Q?
Amazon Q's most frequent failure mode is security vulnerability — its worst documented incident (STUPID-2026-0035) was rated 10/10 severity. Understanding these failure patterns helps teams decide whether Amazon Q 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 Q 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 Q 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 Q compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Amazon Q 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.