GitHub Copilot vs Aider: what developers actually say

GitHub Copilot has much more evidence: 659 opinions from 535 authors, versus 34 opinions for Aider. Copilot's approval is 42 overall and 38 in the last 90 days; Aider's is 60, with no 90-day figure. Copilot's strongest positive aspect is autonomy at 24 positive and 13 negative mentions, while its main problems are code quality at 38 positive and 93 negative, reliability at 14 and 54, and cost at 60 and 80. Aider is the better pick for terminal and git-centered work on small tasks, where its code-quality mentions are 5 positive and 1 negative, but its sample is too small for a broad claim.