I tried using it and am not impressed. I don't know if it's possible to do any of the things shown in the promotional videos. It seems like a typical web-enabled LLM, but in a browser extension. I didn't see ANY functionality from "Copilot mode" that doesn't already exist in any other web-enabled LLM. It couldn't book anything. It didn't move through the site. It did poor analysis. It hallucinated links. It gaslit me and told me that I needed to manually do the things I was asking - and gave me incorrect instructions on how to do that.

I had to double-check that I was correctly opted into this new feature because it seemed like a terrible implementation of very established technology. Every task I attempted was a frustrating failure. Embarrassingly bad stuff.

If you really want to know my specific gripes: I navigated to a major hotel chain's site that I have discounted rates at, subject to availability. I asked Copilot to find me a hotel within driving distance to my home with those discounted rates available for certain dates. It claimed that it checked that the rates were available (something I didn't expect it to be able to do), and gave me a few hotels. The hotels exist, but every one of the "View hotel details" links were broken. Although it said it checked to see if rooms were available under the discounted rates, it definitely didn't. I tried to get it to book a reservation anyway, and it said that the "page isn't loading properly right now - either it's been moved or there's a glitch on the hotel's site." The hotel's site was working just fine.

I navigated to a recipe website I often use. I asked Copilot to find me some recipes fitting certain basic criteria ("vegan," "quick and easy").

The links it provided to each recipe were all to the main page - not actually to the recipes themselves, even though the labeled link text suggested it would be to the individual recipe.

Although the site has a plethora of vegan options, 2/4 of its recommendations were non-vegan recipes that it gave tips on how to make vegan. Recommending that I make quesadillas by "swapping nutritional yeast instead of dairy cheese" is a terrible, awful idea. Especially in the context of all the other great, already vegan recipes on the site it ignored to make this recommendation.

For the other converted-to-vegan recipe, I manually searched for the original recipe (since it couldn't provide recipe-specific links) to see that the author already had a vegan version of the recipe linked in the original instructions. Copilot's veganization was unnecessary and lower quality than what the author had already provided on the site.

For what it worth: nutritional yeast is great to replace parmigiana-like cheese. For mozzarella it’s probable a bad choice if you want to be as close as possible, but yeast is definitely not an hallucination as a cheese replacement. I’d be interested to see one or two propositions if you’re willing to share.