GPT-5.6 changed the AI integration boundary, not just the model menu

The introduction of GPT-5.6 by OpenAI is more than just a new model; it's reshaping how developers integrate AI into their software. The shift means that the choice of AI model is now a strategic decision rather than a simple menu option. With models like Sol, Terra, and Luna offering different performance and cost trade-offs, developers must now consider which AI feature best fits their product's needs. This change is significant because it underscores a broader trend where AI integration is becoming a core architectural consideration, affecting everything from development strategy to cost management.