Is GitHub Copilot or GPT-5.6-Sol more reliable?

Based on StupidLLM's incident database, GitHub Copilot has 6 documented failures (avg severity 7.8/10) while GPT-5.6-Sol has 3 (avg severity 9.0/10). GitHub Copilot shows better reliability.

What are the main differences between GitHub Copilot and GPT-5.6-Sol failures?

GitHub Copilot's most common failure mode is Security Vulnerability, while GPT-5.6-Sol most commonly fails via Destructive Action. GitHub Copilot has 3 critical incidents vs GPT-5.6-Sol's 2.

Which has more critical-severity failures?

GitHub Copilot has more critical failures (3 vs 2), indicating a higher likelihood of severe, production-impacting incidents.

Should I use GitHub Copilot or GPT-5.6-Sol for production code?

GitHub Copilot has a lower average failure severity (7.8/10 vs 9.0/10), 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?

GitHub Copilot has 6 verified incidents out of 6 total, while GPT-5.6-Sol has 2 verified out of 3. Verified incidents are confirmed against source evidence.

Head to head

GitHub Copilot vs GPT-5.6-Sol

Comparing 6 documented GitHub Copilot incidents against 3 for GPT-5.6-Sol.

Full GitHub Copilotreport →Full GPT-5.6-Solreport →

Verdict

GitHub Copilot has the lower average failure severity (7.8/10 vs 9.0/10), making it the statistically safer choice of the two — though both agents have documented critical incidents.