OpenRouter

Aider can connect to models provided by OpenRouter: You’ll need an OpenRouter API key.

python -m pip install -U aider-chat

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

# Or any other open router model
aider --model openrouter/<provider>/<model>

# List models available from OpenRouter
aider --list-models openrouter/

In particular, many aider users access Sonnet via OpenRouter:

python -m pip install -U aider-chat

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

aider --model openrouter/anthropic/claude-3.5-sonnet

If you get errors, check your OpenRouter privacy settings. Be sure to “enable providers that may train on inputs” to allow use of all models.