Perplexity AI has introduced the Comet browser, which aims to enhance productivity by serving as a personal assistant for users. CEO Aravind Srinivas stated that the browser could allow companies to avoid hiring additional staff by improving task efficiency. He estimated that a 20% productivity gain from AI could lead to a $5 trillion increase in GDP, given that 'human digital knowledge work' contributes around $25 trillion to the economy. However, Chicago Fed President Austan Goolsbee expressed concerns about the risks of over-investment in AI technologies, suggesting that the growth rate may not meet expectations. Major tech companies are projected to invest heavily in AI, with combined spending reaching $320 billion by 2025. The Comet browser, which became available for free worldwide, follows similar AI browser initiatives from other tech giants.