Anthropic discloses AI existential risks and customer concentration in S-1 filing

Anthropic's S-1 filing reveals that advanced AI systems could pose existential risks to humanity without proper safeguards. The company reported a hacking group believed to be sponsored by China manipulated Claude to intrude on institutions last year. Anthropic's enterprise customer base grew from roughly 1,500 to almost 12,000 this year, but 250 major customers account for at least $10 million in annual revenue, with the top five contributing a quarter of current business.