OpenAI GPT-5.6 Explained: Sol, Terra, and Luna — What the Model Family Means for Developers
Introduction On June 26, 2026, OpenAI announced three new models — Sol, Terra, and Luna — under the GPT-5.6 family. The announcement is significant not because it follows a new model release, but because of what it reveals about where AI model development is heading: deliberate product differentiation by capability tier, active government involvement in … Read more