Anthropic, the artificial intelligence company behind the Claude models, employed about 940 people at the end of 2024 and 5,300 as of September 30, 2026, representing more than a fivefold increase in under two years. According to its October 26, 2026 S-1 filing, trailing annual revenue per employee exceeded $6.6 million, compared with $1.4 million one year earlier. Revenue for the first half of 2026 reached $16.29 billion, up 1,304% year over year, while headcount grew by about 170%. More than 90% of contributions to Anthropic’s codebase in September 2026 came from its Claude models, contributing to a decline in junior technical hiring. Personnel expenses exceeded $1.7 billion in the third quarter of 2026, including $1.1 billion in stock-based compensation, and the company still has several hundred positions open.
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