Aider vs Windsurf
Side-by-side on price, features and best fit — plus a quick verdict.
| Aider | Windsurf | |
|---|---|---|
| Starting price | free (open source) + model API | $15/mo |
| Free tier | Yes | Yes |
| Category | AI Coding Assistants | AI Coding Assistants |
| Best for | terminal coders, git workflows, model flexibility | agentic coding, refactoring, full-project work |
Aider
Open-source AI pair programmer in your terminal.
free (open source) + model API
Free tier available
- Terminal-based
- Edits your git repo
- Open source
- Works with many models
Windsurf
AI-native code editor with agentic, codebase-aware flows.
$15/mo
Free tier available
- Agentic flows
- Codebase awareness
- Inline completion
- Free tier
Verdict
Choose Aider if you want terminal coders; pick Windsurf for agentic coding. Both are worth a quick trial before committing.