Anthropic has filed for an initial public offering with a valuation of more than $1.5 trillion. The company's IPO prospectus indicates significant increases in revenue and massive spending on computing resources. The market debut is expected to be intensively observed, with analysts considering the potential impact on AI advancements. The prospectus notes steady revenue increases and significant expenditures on computing infrastructure, which could affect the company's profitability. The filing is part of a broader trend in the tech sector, with many companies seeking to take advantage of the expanding AI industry.