Is Aider or Claude Code more reliable?

StupidLLM has 5 documented incidents for Aider (average severity 4.0/10) and 53 for Claude Code (6.8/10). 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 Aider and Claude Code failures?

Aider's most common failure mode is Logic Error, while Claude Code most commonly fails via Destructive Action. Aider has 0 critical incidents vs Claude Code's 8.

Which has more critical-severity failures?

Claude Code has more critical failures (8 vs 0), indicating a higher likelihood of severe, production-impacting incidents.

How many verified incidents does each agent have?

Aider has 2 verified incidents out of 5 total, while Claude Code has 49 verified out of 53. Verified incidents are confirmed against source evidence.

Head to head

Aider vs Claude Code

Comparing 5 documented Aider incidents against 53 for Claude Code.

Full Aiderreport →Full Claude Codereport →

What these records show

Aider has the lower average severity among the incidents collected here (4.0 vs 6.8 for Aider and Claude Code, from 5 and 53 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.