Anthropic’s $30 trillion fantasy

Substack · Watch/Read · (gathered 2026-08-29)

• Gary Marcus dismisses Anthropic’s reported $30 trillion valuation target as an unrealistic “fantasy,” highlighting a stark disconnect between their ambitious financial projections and market realities.
• He notes the irony that Anthropic reportedly asks prospective employees about comfort with stock potentially crashing to zero, while simultaneously aiming for such a colossal valuation.
• Marcus warns of a potential “trainwreck” if Anthropic doesn’t scale back IPO expectations, citing “Planet Earth” realities like Thomson Reuters pulling back on Claude usage to build its own AI model, and cautions that investors, including pension funds, could be “left holding the bag.”