What is Aider and how does it work with AI pair programming?

Aider is a free, open-source AI pair programming tool that supports context files, including SKILL.md instructions. Developers bring an API key, and Aider handles the rest without subscription fees, token markups, or vendor lock-in.

Does Aider have a built-in directory for skills like Claude Code?

No, Aider does not have a native skills directory. Instead, you load SKILL.md files as context files for Aider to read during your session.

How do developers load SKILL.md files in Aider for use?

Developers can load SKILL.md files using the /read-only command or by adding them to the .aider.conf.yml file for automatic loading at the session start.

What types of skills are most effective for Aider users?

Skills that are focused on file-level tasks, such as code review, testing, and refactoring, are most effective for Aider users. This includes analyzing specific functions, adding tests to modules, or refactoring individual files.

How does Aider's approach to skills compare to Claude Code?

Aider uses context files for skills, while Claude Code has a native skills directory and ecosystem. Aider prioritizes cost-effectiveness and deep Git integration, whereas Claude Code offers more features like Agent Teams and hooks.

What is the cost associated with using Aider?

Aider itself is free to use, and it does not add any markup on token costs. Users are only responsible for the cost associated with the API provider they choose, such as OpenAI, Anthropic, or Google.