Anthropic's amended S-1 filing ahead of its IPO discloses that the AI company spent over $1.7 billion on personnel in Q3 2026, translating to more than $322,000 per employee across its 5,300 staff — roughly $100,000 per month per person, including $1.1 billion in stock-based compensation. Total personnel spending for the first nine months of 2026 reached $4.8 billion, representing 15% of revenue. As of late September, Anthropic carried more than $32 billion in unrecognized stock-based compensation expense, with costs expected to rise further post-listing. The company generates $6.6 million in annual revenue per employee, significantly outpacing Meta's ~$3.2 million and Google's ~$2.5 million.