OpenAI accuses Anthropic of inflating revenue in battle for investors

OpenAI and Anthropic are increasingly competing for the same investors. That is according to Winbuzzer's account of an exclusive story from the news agency Reuters, which is based on anonymous sources. Neither OpenAI nor Anthropic has officially confirmed the information.

New round is only in talks

According to the story, OpenAI is in talks about a new funding round of around $30 billion at a valuation of more than $1.4 trillion. The round has not been finalized, so these are negotiations and not a deal.

The investor MGX took part in Anthropic's round in May and is now in talks with OpenAI. Anthropic's round in May 2026 valued the company at $965 billion.

Disagreement over revenue

OpenAI calculates its annualized revenue by taking the sales of recent quarters and extrapolating them to a full year. Anthropic uses a different method.

According to the reported story, OpenAI accuses Anthropic of inflating its revenue figures by counting full contract values when they come through cloud providers. Anthropic responds that the company follows established accounting practice. This is therefore an accusation from OpenAI that Anthropic denies, and not a settled matter.

SoftBank has paid the last installment

On October 1, 2026, SoftBank paid the final installment of $10 billion of its earlier $30 billion commitment to OpenAI. The payment was financed with proceeds from senior bonds, which are ordinary loans issued by SoftBank.

Background: The previous round

On April 1, 2026, OpenAI closed a $122 billion round at a post-money valuation of $852 billion. The largest investors were Amazon with $50 billion, of which $35 billion is conditional, as well as Nvidia and SoftBank with $30 billion each.

For readers, the story shows that two of the biggest AI companies are competing for the same money, and that revenue figures can be calculated in different ways.