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| Enabled for | Public preview | General availability |
|---|---|---|
| Admins, makers, marketers, or analysts, automatically | 
Jun 3, 2025 |
Sep 30, 2025 |
Business value
Power Fx helps fill some GPT gaps, such as knowledge about the current date, mathematical operations, and counting. You fill these gaps by building expressions with the Power Fx language and adding this context to the prompt with the prompt builder.
Power Fx also helps solve the RAG (Retrieval Augmented Generation) filtering limitations of the prompt builder. Use the Power Fx query language to build complex filters that scope the data to retrieve.
Feature details
You can access the Power Fx designer from prompt builder. Define an expression and name it for inline insertion in the prompt. The prompt dynamically includes information from the expression's execution, enabling more specific responses.
To filter your knowledge, use Power Fx expressions along with the current attribute and value selection. With this approach, you get more control over the data used as the prompt's context.
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
Add inputs to your prompt (docs)