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Usage
Run aider with the source code files you want to edit.
These files will be "added to the chat session", so that
aider can see their
contents and edit them for you.
aider <file1> <file2> ...
Adding files
Just add the files that the aider will need to edit. If you add too many files, the LLM can get overwhelmed and confused (and it costs more tokens). Aider will automatically pull in content from related files so that it can understand the rest of your code base.
You can also run aider without naming any files and use the in-chat
/add command to add files.
Or you can skip adding files completely, and aider will try to figure out which files need to be edited based on your requests.
LLMs
Aider uses GPT-4o by default, but you can
connect to many different LLMs.
Claude 3 Opus is another model which works very well with aider,
which you can use by running aider --opus.
You can run aider --model XXX to launch aider with
a specific model.
Or, during your chat you can switch models with the in-chat
/model command.
Making changes
Ask aider to make changes to your code. It will show you some diffs of the changes it is making to complete you request. It will git commit all the changes it makes, so they are easy to track and undo.
You can always use the /undo command to undo changes you don't
like.