Is Cursor or GitHub Copilot more reliable?

StupidLLM has 4 documented incidents for Cursor (average severity 7.8/10) and 6 for GitHub Copilot (7.3/10). These records can't establish which agent is safer: counts reflect how widely each is used and how often people report failures, not a failure rate.

What are the main differences between Cursor and GitHub Copilot failures?

Cursor's most common failure mode is Destructive Action, while GitHub Copilot most commonly fails via Security Vulnerability. Cursor has 1 critical incidents vs GitHub Copilot's 0.

Which has more critical-severity failures?

Cursor has more critical failures (1 vs 0), indicating a higher likelihood of severe, production-impacting incidents.

How many verified incidents does each agent have?

Cursor has 4 verified incidents out of 4 total, while GitHub Copilot has 6 verified out of 6. Verified incidents are confirmed against source evidence.

Head to head

Cursor vs GitHub Copilot

Comparing 4 documented Cursor incidents against 6 for GitHub Copilot.

Full Cursorreport →Full GitHub Copilotreport →

What these records show

GitHub Copilot has the lower average severity among the incidents collected here (7.8 vs 7.3 for Cursor and GitHub Copilot, from 4 and 6 incidents). These records can't establish which agent is safer: counts reflect how widely each is used and how often people report failures, not a failure rate.