xAI
You’ll need a xAI API key.
First, install aider:
python -m pip install aider-install
aider-install
Then configure your API keys:
export XAI_API_KEY=<key> # Mac/Linux
setx XAI_API_KEY <key> # Windows, restart shell after setx
Start working with aider and xAI on your codebase:
# Change directory into your codebase
cd /to/your/project
# Grok 3
aider --model xai/grok-3-beta
# Grok 3 fast (faster, more expensive)
aider --model xai/grok-3-fast-beta
# Grok 3 Mini
aider --model xai/grok-3-mini-beta
# Grok 3 Mini fast (faster, more expensive)
aider --model xai/grok-3-mini-fast-beta
# List models available from xAI
aider --list-models xai/
The Grok 3 Mini models support the --reasoning-effort
flag.
See the reasoning settings documentation for details.
Example:
aider --model xai/grok-3-mini-beta --reasoning-effort high