The diff-and-commit-per-change model is genuinely unique. Aider keeps your repo's history readable — every AI-driven edit lands as a clean commit with the prompt as context. Strong on focused work; not the right tool for long-running autonomous tasks. BYO key.
Aider is the answer to “what if AI edits looked exactly like a senior engineer’s git commits?” Every change becomes a clean commit with the prompt that produced it captured in the message. The git diff is the contract.
What you actually get
A terminal REPL that reads your repo, accepts instructions, and produces diffs you review and commit. The default mode commits each accepted change immediately — fast to revert, easy to audit.
Where it falls short
Aider is excellent for small focused work; less suited to long autonomous runs. The terminal-only UX means no visual diff browser. If you’re building a feature across many files, Claude Code or Cursor agent mode will be faster end-to-end.