OpenAI vs. Anthropic: What the S-1 Tells Us About AI ARR

Anthropic ARR

In October 2026, the headlines said Anthropic had passed OpenAI in revenue. Reuters, citing unnamed sources, reported that Anthropic’s annualized revenue crossed $65 billion in July. OpenAI reportedly told investors its annualized revenue for September was almost $50 billion, below the figure approaching $70 billion it had signaled earlier. Keep in mind these are press […]