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| Enabled for | Public preview | General availability |
|---|---|---|
| Admins, makers, marketers, or analysts, automatically | 
Mar 12, 2025 |
- |
Business value
Makers can switch to new and preview versions of models to experiment and evaluate what benefits this new model can have for their customers.
Feature details
After an agent is created in Copilot Studio, makers will see a new section Generative response model with a list of available models.
The Default model is automatically selected if the user doesn't make any change.
With this feature, the maker can now chose to switch to the Preview GPT 4.5 model. After they switch, the agent's answer generation workflow will use GPT 4.5 model instead of the existing default (GPT 4o). The maker can experiment and explore the quality and character of the responses in the test chat or with agent users.
They can switch back and forth between the Default and Preview models at any time.
Geographic areas
Visit the Explore Feature Geography report for Microsoft Azure areas where this feature is planned or available.
Language availability
Visit the Explore Feature Language report for information on this feature's availability.
Related Content
Copilot Studio (blog)
Choose a preview model for generative responses (preview) (docs)