Configuration

Aider has many options which can be set with command line switches. Most options can also be set in an .aider.conf.yml file which can be placed in your home directory or at the root of your git repo. Or by setting environment variables like AIDER_xxx either in your shell or a .env file.

Here are 4 equivalent ways of setting an option.

With a command line switch:

$ aider --dark-mode

Using a .aider.conf.yml file:

dark-mode: true

By setting an environment variable:

export AIDER_DARK_MODE=true

Using an .env file:

AIDER_DARK_MODE=true

See the API key configuration docs for information on how to configure and store your API keys.

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Table of contents

• API Keys
• Options reference
• YAML config file
• Config with .env
• Editor configuration
• Reasoning models
• Advanced model settings
• Model Aliases