Anthropic filed paperwork to go public just as corporate America is entering its AI sticker shock phase. Why it matters: Companies are Anthropic's biggest customers. If they dial down their AI spend, that could weaken the AI lab's revenue just as the it prepares to IPO. Driving the news: Hours after Anthropic filed its pre-IPO paperwork, OpenAI CEO Sam Altman told CNBC that corporate concern over AI costs is "the most fair criticism of AI so far." Bain published a survey of nearly 1,000 comp