X vs Y

Claude Code vs Aider

Both are terminal-first coding agents that edit a real repository. Claude Code is Anthropic's product. Aider is open source and model-agnostic.

Claude Code

Claude Code is Anthropic's coding agent for the terminal, IDE, desktop app, and browser. It reads a repository, edits files, and runs commands.

Vendor site

Aider

Aider is an open-source AI pair programmer in the terminal. It maps a conversation onto git commits in a repository on your machine.

Vendor site

Side by side

Where it runs

Claude CodeTerminal, IDE, desktop app, and browser.

AiderTerminal, against a local git repository.

Model

Claude CodeClaude, with some surfaces able to use other providers.

AiderYou bring the model. Aider is the harness.

License

Claude CodeCommercial product. Pricing is not listed here.

AiderOpen source. You still pay for model usage.

Git

Claude CodeEdits the working tree and can participate in review workflows.

AiderKnown for mapping the chat onto git commits.

How to choose

Pick Claude Code if you want Anthropic's agent, with desktop and IDE surfaces as well as the CLI. Pick Aider if you want an open-source tool that commits as it goes and lets you bring whatever model you already pay for.

Checked 14 Oct 2026. Product capabilities change. Visit each tool’s website for the latest details.