[ 'label' => 'GPT-4o Mini (Free)', 'model' => 'gpt-4o-mini', 'input_cost' => 0.00015, 'output_cost' => 0.0006, 'max_tokens' => 800, 'temperature' => 0.2, ], 'gpt-4o' => [ 'label' => 'GPT-4o (Pro)', 'model' => 'gpt-4o', 'input_cost' => 0.005, 'output_cost' => 0.015, 'max_tokens' => 2000, 'temperature' => 0.2, ], 'gpt-4-1' => [ 'label' => 'GPT-4.1 (Premium)', 'model' => 'gpt-4.1', 'input_cost' => 0.01, 'output_cost' => 0.03, 'max_tokens' => 4000, 'temperature' => 0.2, ], ];