Generative Pages Just Took a Quiet Step Backward

What is going on with generative pages in Power Apps?

These days I don't touch Power Apps nearly as much as Copilot Studio or Power Automate, but today I decided to make a couple of changes to a generative page I'd added to a model-driven app last year. And I found the only model choice available was GPT-4.1.

I felt sure the work I'd done here was done in GPT-5, and Microsoft's own GA announcement of this feature from November last year states "Powered by GPT-5 for best-in-class code generation quality and performance".

Confused, I headed over to Microsoft Learn to find that two months ago a note had been added to the documentation (that was still proudly showing GPT-5 as the default and selectable model) stating the only available model is now GPT-4.1.

While GPT-4.1 was a leading model over 12 months ago, today a "budget" model like Claude Haiku 4.5 beats it on software engineering benchmarks, and even GPT-5.4 nano is in a similar ballpark.

On a day when lots of people are worrying about a new frontier model that has vanished from preview products like Cowork, I want to steer the conversation back to production-ready GA capabilities like generative pages getting a silent downgrade in default model generation.

If I had to guess, a note added two months ago stating only GPT-4.1 is now available seems very close to the deprecation of one of the available versions of GPT-5 in Azure. If that's the driver, then it highlights the impact of the constant march of new models. The upside is there are always new capabilities on the horizon, the downside is that your app needs to keep up as access to the best model for it today might be gone tomorrow.

For those of you wondering: GPT-4.1 handled the small update I needed, supporting the other point I've been making here today - the latest model isn't always necessary (but we should at least get the one that's announced!)

First posted on Linkedin on 6/20/2026 → View Linkedin Post Here