The assistant runs Lighthouse itself and returns LCP, CLS, FCP, TTFB and TBT, each rated against Google thresholds.
There is now a speed measurement tool. The assistant runs a page through Lighthouse and shows a card with the metrics: LCP, CLS, FCP, TTFB and TBT, each with a value and a rating of good, needs improvement, or poor against Google's thresholds.
The card states plainly that this is a lab measurement: 4G emulation and a 4× CPU slowdown, so the numbers can differ from real-user data. INP cannot be measured in a lab — rather than invent a value, the assistant explains this and points you to Yandex.Webmaster or Search Console for it.
For quickly establishing whether a page really has a speed problem before taking the task to developers.
Ask about a specific page's speed in the chat — "check the speed of site.ru/page", for example.