OpenAI’s GPT-5.6 Sol, Terra, and Luna are now available in GitHub Copilot
TL;DR
OpenAI GPT-5.6 is rolling out in GitHub Copilot with three variants: Sol for heavy reasoning, Terra as the balanced default, and Luna for faster low-cost coding help. Sol is available for Copilot Pro+, Max, Business, and Enterprise. Terra and Luna are also available to Copilot Pro users. The models will show up in the model picker across VS Code, Visual Studio, Copilot CLI, the Copilot cloud agent, GitHub.com, mobile apps, JetBrains, Xcode, and Eclipse.
Nauti's Take
This reads like a major model launch, but the concrete news is mostly a Copilot portfolio update. GitHub does not provide benchmarks, context sizes, or quality comparisons, so Sol, Terra, and Luna are still mostly positioning labels for now.
For engineering teams, the useful move is governance: set model access, budgets, and defaults deliberately, because the model picker can turn into a cost lottery fast.
Briefingshow
GitHub is turning Copilot further into a model router. For teams, the practical question shifts from choosing one best model to deciding which model fits which task and budget. The admin policy and usage-based billing are the operational details that matter most here.
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