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Claude Code vs Aider

Aider scores 25 out of 30 and Claude Code scores 17. Aider is ahead on footprint, lock-in, self-direction and power. Claude Code is ahead on longevity.

Claude Code

The giant

17/30 · Mixed

Anthropic's coding agent for the terminal and editors, a closed tool that talks to Anthropic's servers.

Aider

The small tool

25/30 · Convivial

A terminal tool that pairs you with the language model of your choice, on new or old codebases.

Footprint
3
4
Lock-in
2
5
Self-direction
3
5
Power
1
4
Longevity
4
3
Delivery
4
4
Price
Included with Claude plans; or API pricing
Free; you pay your model provider
Source
Closed source
Open source (Apache-2.0)
Runs on
Terminal, editors, desktop, web
Terminal (installs with pip)
Maker
XL · Extra large
S · Small

What you give up by switching

Aider installs with pip and runs in a terminal, so it will feel steep to people who have never opened one, and you pick and pay for the model yourself. Its page shows no release dates, so we scored its longevity on the size of the project alone.

How to move

Install Aider, run it in your project folder with the model of your choice, local ones included, and try it on one small task next to Claude Code before you switch.

Scores are our opinion on six questions from Ivan Illich, based on public sources and dated October 2026. Read the full reviews of Claude Code and Aider, or see how we score.

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