Is Aider or Gemini CLI more reliable?

Based on StupidLLM's incident database, Aider has 4 documented failures (avg severity 4.5/10) while Gemini CLI has 4 (avg severity 9.4/10). Aider shows better reliability.

What are the main differences between Aider and Gemini CLI failures?

Aider's most common failure mode is Logic Error, while Gemini CLI most commonly fails via Destructive Action. Aider has 0 critical incidents vs Gemini CLI's 3.

Which has more critical-severity failures?

Gemini CLI has more critical failures (3 vs 0), indicating a higher likelihood of severe, production-impacting incidents.

Should I use Aider or Gemini CLI for production code?

Aider has a lower average failure severity (4.5/10 vs 9.4/10), 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?

Aider has 1 verified incidents out of 4 total, while Gemini CLI has 4 verified out of 4. Verified incidents are confirmed against source evidence.

Head to head

Aider vs Gemini CLI

Comparing 4 documented Aider incidents against 4 for Gemini CLI.

Full Aiderreport →Full Gemini CLIreport →

Verdict

Aider has the lower average failure severity (4.5/10 vs 9.4/10), making it the statistically safer choice of the two — though both agents have documented critical incidents.