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Aider vs SWE-agent

Our take

Pick Aider if developers who already live in git and a TTY and will paste an API key. Pick SWE-agent if researchers and platform engineers who want to run and inspect coding-agent trajectories on their own machines. Skip Aider if people who want an IDE Agent sidebar (Cursor, Cline, Continue) and will not run aider in a repo.

Aider

git-native AI pair programmer in the

SWE-agent

SWE-agent

Princeton’s open-source

Best for

Aider An agent that lives in git

SWE-agent A research-grade agent you run yourself

Free plan

Aider $0 · apache-2.0. pip / aider-install

SWE-agent $0 · mIT. You install and run it

Lowest paid

Aider Not published by the vendor

SWE-agent Not published by the vendor

Coding agent

Aider

SWE-agent CLI agent

Runs where

Aider

SWE-agent Hosted

Watch out

Aider $0 is the CLI, not Sonnet

SWE-agent $0 is the software

Last checked

Aider 2026-10-20 · aider.chat

SWE-agent 2026-10-22 · swe-agent.com

Which one, then?

Pick Aider if

developers who already live in git and a TTY and will paste an API key.

Read the Aider page

Pick SWE-agent if

researchers and platform engineers who want to run and inspect coding-agent trajectories on their own machines.

Read the SWE-agent page

Other comparisons