This.

The other day I wrote up some notes for a presentation. Opened Google Slides, clicked the gemini button, pasted the notes in and asked it to make the slides. Nope; gemini can only modify a single slide at a time in Google Slides.

Pasted the same notes into claude, it wrote a pptx file, I imported that into Slides, job done.

Being integrated into the product doesn't always mean a better result.