AI investors worry as Anthropic and OpenAI revenue growth slows

Anthropic's third-quarter revenue rose 45% to $16.8 billion, down from nearly 60% growth the previous quarter. OpenAI cut its annualized revenue forecast by $20 billion, and Anthropic's expected IPO valuation fell from $2 trillion to $1.5 trillion.

• Anthropic revenue: $16.8B in Q3 vs $11.6B in Q2
• OpenAI trimmed its ARR forecast by $20B from about $70B
• Anthropic IPO valuation estimate fell from $2T to $1.5T
• Anthropic posted a $42B net loss for 2025