Claude Code vs Aider: what developers actually say
Based on 3,060 opinions on Hacker News from developers who discussed these two, most of them first-hand users.
Claude Code comes out ahead on evidence and stated preference: 3,026 opinions from 2,204 authors, 54% approval, 51% in the last 90 days, and a 6-to-1 edge in direct picks over Aider. Its net aspect scores are positive on autonomy (+192), speed (+81), and code quality (+51), and negative on reliability (-189), usage limits (-100), cost (-57), and UX (-13). Aider's 60% approval rests on only 34 opinions; its code quality (+4) and large-codebase (+2) scores are positive, cost reports are mixed, and one user picked it for a huge Go repository. That makes Aider a niche choice for controlled work in large repositories, while Claude Code is the better-supported general pick.
When developers explicitly said they prefer one or switched: 6 picked Claude Code, 1 picked Aider.
Choose Claude Code if
- Need the broadest evidence base
- Value autonomy and speed most
- Can accept usage-limit and reliability friction
Choose Aider if
- Work in a very large codebase
- Want explicit file control
- Prefer local-first data handling
Where each one wins and loses
Why developers switched
Picked Claude Code
Picked Aider
Summaries are paraphrased. Each links to the original comment.