Microsoft has initiated the gradual rollout of GPT 5.1 to its Copilot AI assistant on Windows 11. The update is being delivered server-side, meaning users will receive it automatically without needing to take any action. This enhancement brings the more advanced AI model to Copilot users, including those who do not have a paid subscription. This move makes some of GPT 5.1's advanced capabilities, which are part of a paid subscription on other platforms, accessible for free through Copilot. Alongside the model update, Microsoft is also introducing a new "Labs" feature for Copilot. There was no significant market reaction or analysis available regarding this specific product rollout in the immediate aftermath of the news.