Comet is a web browser from Perplexity with a built-in assistant that acts on the user's behalf. It reads the pages being browsed and carries out tasks such as comparing news coverage, drafting email replies, building a simple website or buying a product.

Key features:

Compare how different sources cover a topic.
Draft email replies using the user's schedule.
Turn a syllabus into a study plan.
Find and buy products online.
Delegate chores such as inbox cleanup, grocery orders, finances and trip planning.
Pause the Comet Assistant at any time.

Comet is available for Mac, Windows, iOS and Android and can be downloaded from Perplexity's site, with privacy and safe-browsing controls in settings. The browser can be downloaded for free, and Perplexity subscriptions unlock additional capabilities.