[Anthropic's Prospectus Reveals Average Monthly Cost Per Employee Exceeds $100,000] According to Business Insider, Anthropic's amended S-1 filing, submitted before its IPO this month, reveals that the company's personnel expenses exceeded $1.7 billion in the third quarter, averaging over $322,000 per employee (for three months), or over $100,000 per month. Stock-based compensation expenses totaled $1.1 billion. For the first nine months of 2026, the company's total personnel expenses reached $4.8 billion, representing 15% of total revenue. As of the end of September, Anthropic had over $32 billion in unrecognized stock-based compensation expenses, and personnel costs will increase after the IPO. The company's average annual revenue per employee is $6.6 million, compared to approximately $3.2 million for Meta and $2.5 million for Google.