GitHub makes Copilot model defaults a policy decision
New models can become available by default, which shifts the work from setup to governance.
GitHub is introducing a global default enablement policy for generally available Copilot models on Copilot Business and Copilot Enterprise. Instead of requiring admins to manually enable each new model, GitHub is moving toward default availability for models that have reached general availability. The practical change is simple: model access can expand faster than the team’s written rules. For an AI-heavy operator, this means Copilot needs a model-routing note, not just an admin setting. Define which model lane is allowed for small edits, multi-file refactors, code review, and sensitive repository work. Verdict: use. Treat this as a governance update and write the routing rule before the next model appears in the tool picker.