Aider is an open-source AI pair programmer in your terminal; o8 is a multi-agent control room with a review gate. One agent at your prompt, versus a governed fleet.
Aideris an open-source command-line tool that pairs an LLM with your local git repo: it proposes edits and commits them as you go, with you driving each step in the terminal. It’s lightweight, single-agent, and tightly coupled to git.
o8 is a local-first desktop control room for autonomous engineering. One orchestrator dispatches a fleet of coding agents — each in its own isolated git worktree — and a governance layer reviews every diff. Nothing merges unreviewed, and nothing risky merges without your sign-off. It runs on your own machine with the subscriptions or keys you already use, and normalizes 16 dispatchable agent runtimes behind one adapter contract in the current public release.
Both are local and both lean on git — but the shape is different. Aider is one agent you prompt step by step. o8 runs many agents in parallel, each isolated in its own worktree, with a merge gate that rebases, typechecks, and locks the head SHA before anything lands in order. Add the audit trail, conflict detection, and organizational memory, and o8 is less a pair programmer than a room you run.
Aider is a great single-agent CLI when you want to stay close to each change. o8 is for when you want a fleet working at once without losing the review step. Start with what o8 is.