Verdict
Preliminary read: the roughie. Easy to overlook next to Cursor and Claude Code, and a serious option if you want the agent in git and the bill to be the model's.
Why it ranks here
Roughie. Free software, your model key, edits land in git.
Aider is an open-source coding agent that runs in the terminal and maps changes onto git. The software is free. You pay the model provider whose API key you connect.
Preliminary score. Reviewed from docs, checked 15 Oct 2026. The 75 is the rubric total. Paid placement is not an input. How we score.
Issue 00 · Builders & vibe coders · Roughie
Open source, and easy to miss beside the hosted editors. You bring a model key and it edits the repo from the terminal.
Best for
- Terminal-first developers
- People who want to choose the model and keep the tool free
Watch-outs
- Anyone who wants a hosted UI and a single subscription
- Non-developers
Score breakdown
Seven criteria, 100 points. The bars are the published marks, not a sponsor adjustment.
Works as claimed
18/25
Did the standard task actually succeed?
Good for its stated job
20/25
Would a builder or a professional keep using it for this job?
Better than the default option
11/15
Is it better than ChatGPT, Claude, Cursor, or whatever people already use?
Time to value
7/10
Minutes from signup to the first useful result.
Price and value
9/10
Free tier, price clarity, and cost per real use.
Trust
7/10
Privacy policy, data handling, who's behind it, and security basics.
Momentum
3/5
Shipping pace and community traction.