Today, we’re excited to announce the addition of OpenAI’s GPT‑5.3 Instant to Microsoft 365 Copilot and Microsoft Copilot Studio. Building on GPT‑5.2 Instant, GPT‑5.3 Instant improves the quality of everyday conversations with more reliably accurate responses, stronger and more expressive writing, and more direct, useful answers—helping Copilot provide a useful response when appropriate, rather than defaulting to disclaimers or declining to proceed.
For questions that draw on information from the web, with GPT-5.3 Instant, Copilot now delivers clearer, more relevant responses by better synthesizing what it finds online with its own knowledge and reasoning—so answers are less shaped by retrieved content alone and more closely reflect the needs of the task.
Together, these improvements help Copilot provide responses that are more focused, relevant, and immediately usable in your work.
We are committed to bringing you the latest cutting-edge AI innovation and model choice tuned for work and tailored to your business needs—with the security, compliance, and privacy that you expect from Microsoft. Microsoft 365 Copilot licensed users will receive priority access to GPT-5.3 Instant, while users without a Microsoft 365 Copilot license will have standard access. Learn more about standard versus priority access here
Get started today
GPT-5.3 Instant begins rolling out today to Microsoft 365 Copilot users with priority access and Microsoft 365 Copilot Chat users with standard access. For agent makers, GPT-5.3 Instant is available in Copilot Studio early release cycle environments. Updates to Thinking will follow soon.
Microsoft 365 Copilot chat interface with the response mode menu open, showing Auto, Quick response, Think deeper, and GPT‑5.3 Quick response selected.
In Copilot Chat, GPT‑5.3 Instant appears as GPT‑5.3 Quick response in the model selector under More, and in Copilot Studio as GPT‑5.3 Chat.
Our team will continue to refine the experience based on your feedback as we build the future of work together. Learn more about Microsoft 365 Copilot and Microsoft Copilot Studio and start transforming work with Copilot today. Learn more about GPT-5.3 Instant from OpenAI here.
For the latest research insights on the future of work and generative AI, visit WorkLab.
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