OpenAI's revenue surged from $1 billion in 2023 to $3.7 billion in 2024, a 270% increase. In comparison, Anthropic's annualized revenue grew from $87 million in early 2024 to $7 billion by late 2025, while xAI saw its annualized revenue jump from $100 million in late 2024 to $500 million by mid-2025.