GPT-5.6 Lands Across GitHub Copilot

GitHub began rolling OpenAI's GPT-5.6 family into Copilot on July 9. GitHub positions Sol for complex, long-running work, Terra as the balanced default, and Luna for smaller, lower-cost tasks. Availability varies by plan, rollout is gradual, and Business and Enterprise administrators must explicitly enable the models because their policy starts off by default.