Aider vs Microsoft Copilot

AI Agent Reliability Comparison

According to StupidLLM's incident database of 64 documented AI agent failures, Aider has 1 incidents (avg severity 6.3/10) while Microsoft Copilot has 1 (avg severity 10.0/10).

Aider

1
Incidents
6.3
Avg Severity
0
Critical
0
High

Top Failure Modes

Wrong File1

Microsoft Copilot

1
Incidents
10.0
Avg Severity
1
Critical
0
High

Top Failure Modes

Security Vulnerability1

Comparison Summary

MetricAiderMicrosoft Copilot
Total Incidents11
Avg Severity6.3/1010.0/10
Critical01
Verified11
Top Failure ModeWrong FileSecurity Vulnerability

Frequently Asked Questions

Is Aider or Microsoft Copilot more reliable?

Based on StupidLLM's incident database, Aider has 1 documented failures (avg severity 6.3/10) while Microsoft Copilot has 1 (avg severity 10.0/10). Aider shows better reliability.

What are the main differences between Aider and Microsoft Copilot failures?

Aider's most common failure mode is Wrong File, while Microsoft Copilot most commonly fails via Security Vulnerability. Aider has 0 critical incidents vs Microsoft Copilot's 1.

Which has more critical-severity failures?

Microsoft Copilot has more critical failures (1 vs 0), indicating a higher likelihood of severe, production-impacting incidents.

Should I use Aider or Microsoft Copilot for production code?

Aider has a lower average failure severity (6.3/10 vs 10.0/10), 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?

Aider has 1 verified incidents out of 1 total, while Microsoft Copilot has 1 verified out of 1. Verified incidents are confirmed against source evidence.