GitHub is rolling OpenAI’s GPT-5.6 Sol, Terra, and Luna into Copilot across its main developer surfaces.
The July 9 changelog says Sol is available for Copilot Pro+, Max, Business, and Enterprise users. Terra and Luna are available for Pro, Pro+, Max, Business, and Enterprise. GitHub says all three models can be used in chat, edit, and agent modes in Visual Studio Code.
The rollout is broader than VS Code. GitHub lists Visual Studio, Copilot CLI, the Copilot cloud agent, the Copilot app, github.com, mobile, JetBrains IDEs, Xcode, and Eclipse among supported surfaces.
The admin default matters
For Copilot Business and Enterprise, GPT-5.6 is disabled by default. Admins have to enable it through Copilot policies before users can select the models.
That is the right default for a model launch with new pricing and enterprise governance implications. GitHub notes that the models are available with usage-based billing and premium request entitlements. A team that turns on Sol everywhere without routing rules may learn quickly that stronger model access is also a budget policy.
The practical rollout question is not whether developers want the newest model. It is which surfaces should get which tier. A cloud coding agent running long tasks has a different cost and review profile from quick IDE chat. Mobile access has a different data-handling profile from a local editor session.
Copilot is becoming a model routing layer
The GPT-5.6 rollout continues a larger Copilot shift. GitHub is not only shipping one assistant. It is turning Copilot into a policy-controlled interface over multiple models, modes, and developer contexts.
That makes the model picker an operational control. Teams can route routine completions to cheaper models, reserve Sol for harder agent tasks, and watch whether developer productivity gains justify premium usage.
The next useful metric is not announcement availability. It is how many teams enable GPT-5.6, where they allow it, and whether agent-mode usage changes code review load, incident risk, or cloud spend.
