Perplexity Launches Comet, an AI Browser With Built-In Agent and Search Integration
Comet combines Perplexity’s AI search engine with a built-in assistant that sees and acts on webpages, aiming to shift how users navigate, learn, and work online.
xAI Launches Grok 4 and Grok 4 Heavy, Aims to Redefine AI Intelligence
Elon Musk’s xAI has unveiled Grok 4, its most advanced AI model to date, claiming postgraduate-level reasoning across every academic discipline—and surpassing rivals on key benchmarks.
