Aider vs GitHub Copilot

A side-by-side comparison of Aider and GitHub Copilot — pricing, free tiers, and who each tool is genuinely best for.

	Aider	GitHub Copilot
Tagline	Open-source AI pair programmer in your terminal	AI pair programmer that autocompletes code and chats inside your editor
Category	AI Coding	AI Coding
Pricing	Free and open-source; you pay only underlying LLM API costs — light use ~$5-20/mo, heavy use can reach $50-200+/mo	Free tier with limited completions; Pro from ~$10/user/mo; Business ~$19/user/mo; Enterprise ~$39/user/mo
Free tier
Best for	Terminal-native developers who want maximum model flexibility and full open-source transparency.	Developers and teams already living in GitHub and mainstream IDEs who want trusted inline completions plus chat.
Not for	Developers who prefer a GUI or managed IDE experience over a CLI workflow.	Teams wanting a fully agentic, repo-rewriting IDE rather than an assistant layered onto their existing editor.
Use cases	Multi-file refactoring from a prompt Bug fixes via natural language Adding features to existing codebases Automated git commits	Inline code completion Code explanation and chat Writing unit tests Refactoring functions Generating boilerplate
	Visit Aider	Visit GitHub Copilot

Choose it if: Terminal-native developers who want maximum model flexibility and full open-source transparency.

Choose it if: Developers and teams already living in GitHub and mainstream IDEs who want trusted inline completions plus chat.