OpenAI's GPT-5.6 Sol model is now cheaper for developers

OpenAI cuts developer pricing for frontier GPT-5.6 Sol model by more than 20%

OpenAI slashes GPT-5.6 Sol API pricing 20%+ ($5→$4, $30→$20) for three months amid Anthropic competition. Second cut in a month signals frontier model margin squeeze; developers can cut ML ops spend but API pricing power erodes industry-wide.