Is Claude Code or GitHub Copilot more reliable?

Based on StupidLLM's incident database, Claude Code has 45 documented failures (avg severity 7.1/10) while GitHub Copilot has 6 (avg severity 7.8/10). Claude Code shows better reliability.

What are the main differences between Claude Code and GitHub Copilot failures?

Claude Code's most common failure mode is Destructive Action, while GitHub Copilot most commonly fails via Security Vulnerability. Claude Code has 10 critical incidents vs GitHub Copilot's 3.

Which has more critical-severity failures?

Claude Code has more critical failures (10 vs 3), indicating a higher likelihood of severe, production-impacting incidents.

Should I use Claude Code or GitHub Copilot for production code?

Claude Code has a lower average failure severity (7.1/10 vs 7.8/10), 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?

Claude Code has 43 verified incidents out of 45 total, while GitHub Copilot has 6 verified out of 6. Verified incidents are confirmed against source evidence.

Head to head

Claude Code vs GitHub Copilot

Comparing 45 documented Claude Code incidents against 6 for GitHub Copilot.

Full Claude Codereport →Full GitHub Copilotreport →

Verdict

Claude Code has the lower average failure severity (7.1/10 vs 7.8/10), making it the statistically safer choice of the two — though both agents have documented critical incidents.