How do you know which AI chatbot is the best? Today, we're putting ChatGPT and Perplexity AI head-to-head. Because they're designed for different purposes, it's tough to rate either as unequivocally ...

Perplexity AI announced its its artificial intelligence-powered web browser Comet is available worldwide. The startup is making Comet free to users as competition heats up with rivals like Google.

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Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...