Anthropic's commanding lead stems from its May 2026 Series H round that set a $965 billion post-money valuation, well ahead of OpenAI at $852 billion and ByteDance around $330–600 billion, according to secondary-market and funding data. Strong Q3 revenue of $16.8 billion, up 46 percent sequentially with adjusted profitability, plus continued demand for its Claude large language models, has reinforced trader consensus that no rival will overtake it by month-end. The company's confidential IPO filing and planned November roadshow keep it private through October, with secondary prices holding near the prior mark. A sudden multi-hundred-billion-dollar tender or round from a competitor before October 31 remains the main scenario that could narrow the gap.