Is Devin or GitHub Copilot more reliable?

Based on StupidLLM's incident database, Devin has 10 documented failures (avg severity 3.9/10) while GitHub Copilot has 5 (avg severity 8.2/10). Devin shows better reliability.

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

Devin's most common failure mode is Scope Explosion, while GitHub Copilot most commonly fails via Security Vulnerability. Devin has 1 critical incidents vs GitHub Copilot's 3.

Which has more critical-severity failures?

GitHub Copilot has more critical failures (3 vs 1), indicating a higher likelihood of severe, production-impacting incidents.

Should I use Devin or GitHub Copilot for production code?

Devin has a lower average failure severity (3.9/10 vs 8.2/10), 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?

Devin has 10 verified incidents out of 10 total, while GitHub Copilot has 5 verified out of 5. Verified incidents are confirmed against source evidence.

Head to head

Devin vs GitHub Copilot

Comparing 10 documented Devin incidents against 5 for GitHub Copilot.

Full Devinreport →Full GitHub Copilotreport →

Verdict

Devin has the lower average failure severity (3.9/10 vs 8.2/10), making it the statistically safer choice of the two — though both agents have documented critical incidents.