Anthropic Just Passed OpenAI in Revenue. Here's What Actually Built That Lead.

A year ago, the consensus was that OpenAI had an insurmountable lead. The brand. The user base. ChatGPT with hundreds of millions of users. The head start. In April 2026, Anthropic crossed $30 billion in annualized revenue and left OpenAI's $25 billion behind — the first time any rival has led this race since ChatGPT launched in November 2022. The Number That Shocked Even the Analysts Anthropic's annualized revenue run-rate hit $30 billion in April 2026, officially overtaking OpenAI's $25 billio