Three places. In the bulk editor, attributes with AI capabilities are highlighted at the top of the sidebar. In the Profiles tab, you'll find a new AI tab alongside your Standard profiles. And a new AI section in the left sidebar holds the Sandbox and the Prompt Manager. This layout is new for everyone, so if things look different than yesterday, that's why.
Start with the default. If you want to experiment, Lite models are fast and economical for high-volume runs like bulk title updates, while Plus models offer more capability for nuanced writing like descriptions. The Sandbox lets you run the same listing through two models side by side, so you can see the difference on your own products before committing to a full batch.
Nothing - your existing profiles are under the Standard tab and work exactly as before, and all the standard bulk editing features you rely on are still available below the AI attributes in the sidebar.
