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Aider vs Twinny: catalog facts
Aider	Twinny
Free Aider itself is free and open source under Apache 2.0. You pay whatever your chosen model…	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
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	Completion, chat, edits and reviews in one extension Works with local or hosted models you choose
Needs an API key and per-token spend unless you run a local model Terminal-driven; there is no graphical interface	Only for VS Code Completion quality depends on the model you connect
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
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 24, 2026

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