OpenAI's September revenue nears $50 billion, below earlier estimate

OpenAI's annualized revenue for September was nearly $50 billion, a figure lower than its earlier indication of approaching $70 billion, according to a person familiar with the matter. The discrepancy stems from an effort to create a direct comparison with rival Anthropic, which excludes revenue from cloud partners like AWS and Google Cloud. OpenAI did not respond to a request for comment. Both companies are preparing for public offerings, which will clarify their finances. OpenAI began 2026 with $20 billion in annualized revenue, while Anthropic's run rate crossed $65 billion in July.