Zhi Tong Cai Jing·2025-07-09 23:42Group 1 - Perplexity AI, supported by Nvidia, has launched an AI-driven web browser named Comet, aiming to challenge Google's dominance in the search engine market [1] - Comet transforms browsing sessions into a seamless interaction, simplifying complex workflows into smooth conversations [1] - The browser features a Comet assistant that allows users to compare products, summarize content, and schedule meetings [1] - Comet maintains perfect context while executing complete workflows, making research conversational and analysis natural [1] - User data in Comet is stored locally and is never used for model training [1] - Comet will be available to Perplexity Max subscribers starting July 9, with invite-only access gradually opening to waitlisted users during the summer [1] Group 2 - Microsoft-backed OpenAI has added search engine capabilities to ChatGPT, recently making the service available to all users [2] - Google has also introduced an AI-driven search feature called "AI Overviews," which was first unveiled last year [2]