Anthropic's $965 billion valuation from its May 2026 Series H round, which included $65 billion in new capital, underpins the near-certain market consensus. This funding, backed by investors like Sequoia and Altimeter, reflected the company's explosive revenue trajectory—reaching a $47 billion annualized run rate—alongside advancements in its Claude large language models and enterprise adoption. No other listed private firm, including OpenAI at roughly $852 billion, approached this level amid the broader AI competitive landscape. While new funding rounds or revised assessments could theoretically alter rankings before resolution, the absence of comparable updates through late July has locked in trader sentiment around Anthropic's established lead.