inside config/services.php
add 'openrouter' => [ 'api_key' => env('OPENROUTER_API_KEY'), 'base_url' => 'https://openrouter.ai/api/v1/chat/completions', ],
----------------OR--------------------------
'openrouter' => [ 'key' => env('OPENROUTER_API_KEY'), ],
add to your .env
OPENROUTER_API_KEY=your_api_key