Anthropic Surges Past OpenAI With Stunning $1 Trillion Valuation on Secondary Markets

Buyers scooping up coveted Anthropic shares have vaulted the AI giant's valuation on some trading platforms to $1 trillion, eclipsing OpenAI's market capitalization by over $100 billion in a sea change in the AI race. The investor scramble has ratcheted up in recent weeks, as demand for OpenAI shares simultaneously sags. Anthropic's annualized revenue jumped from $9 billion at the end of 2025 to $30 billion by March 2026 — a 233% increase in just one quarter — driven primarily by strong demand for its coding tools. On private stock marketplace Hiive, Anthropic shares have surged 211% to roughly $900 over the past three months, while OpenAI shares have risen just 8.5% to $608 over the same period. One Silicon Valley dealmaker even proposed swapping his 14-acre estate for Anthropic shares. One Anthropic shareholder recently offered to unload shares at a $1.15 trillion valuation.