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GitHub Flips Copilot Model Enablement to On-by-Default for Business and Enterprise, One Day After Grok 4.5 Shipped Off-by-Default
On July 29, 2026 GitHub introduced a global default enablement policy: models reaching general availability in Copilot are now on by default for Copilot Business and Copilot Enterprise, with a single opt-out control for organizations that need stricter governance. This is a direct reversal of the posture from the July 28 Grok 4.5 rollout, which required admins to enable the model manually. Practically, enterprise admins who assumed new models were gated now have to opt out once rather than opt in per model.
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