Use OpenRouter in Aider

Steps

1. 1
   Step 1.

   Install aider.

   Terminal

   Copy

   python -m pip install aider-install
   aider-install

2. 2
   Step 2.

   Set your OpenRouter API key.

   Terminal

   Copy

   export OPENROUTER_API_KEY=<key> # Mac/Linux
   setx   OPENROUTER_API_KEY <key> # Windows, restart shell after setx

3. 3
   Step 3.

   Start aider in your codebase with an OpenRouter model, or list the available OpenRouter models.

   Terminal

   Copy

   # Change directory into your codebase
   cd /to/your/project
   
   # Or any other open router model
   aider --model openrouter/<provider>/<model>
   
   # List models available from OpenRouter
   aider --list-models openrouter/

4. 4
   Step 4.

   Optional: control OpenRouter provider routing in .aider.model.settings.yml, placed in your home directory or the root of your git project.

   YAML

   Copy

   - name: openrouter/anthropic/claude-3.7-sonnet
     extra_params:
       extra_body:
         provider:
           # Only use these providers, in this order
           order: ["Anthropic", "Together"]
           # Don't fall back to other providers
           allow_fallbacks: false
           # Skip providers that may train on inputs
           data_collection: "deny"
           # Only use providers supporting all parameters
           require_parameters: true