OpenAI’s push for a $30 billion-plus private round at around $1.4 trillion pre-money valuation, up sharply from its $852 billion March close, has kept trader sentiment balanced against Anthropic’s $965 billion May mark and leaked IPO plans targeting over $2 trillion. Recent revenue momentum favors Anthropic, which overtook OpenAI in Q2 2026 quarterly sales at $11.6 billion and holds a higher annualized run rate near $65 billion, while OpenAI’s run rate has climbed rapidly toward $70 billion amid enterprise growth. The near-even 50.5% implied probability for OpenAI reflects uncertainty over whether its bridge financing closes quickly or Anthropic’s potential November IPO and secondary trading prints deliver decisive valuation gains in October. Key catalysts include final terms on OpenAI’s round, Anthropic’s IPO marketing timeline, and any new large language model releases or benchmark results that shift enterprise adoption.