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Aider vs Gemini CLI: catalog facts
Aider	Gemini CLI
Free Aider itself is free and open source under Apache 2.0. You pay whatever your chosen model…	Freemium Free to use within Google's free tier limits; higher usage requires a paid Gemini plan.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Commits every change to git automatically, so the usual diff and revert tools work Maps the whole codebase, which is what makes it usable on projects of real size	Open source client under the Apache license Includes a usable free tier without requiring a paid plan
Needs an API key and per-token spend unless you run a local model Terminal-driven; there is no graphical interface	Requires Google authentication and depends on Gemini's cloud models Free tier request limits may be restrictive for heavy use
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: Apache-2.0
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.