Anthropic leads trader sentiment at 62.5% implied probability for the largest private company by end of August 2026, driven by its May 2026 Series H round that closed at a $965 billion post-money valuation after raising $65 billion. This marked the first time the company behind the Claude large language model surpassed OpenAI, whose March 2026 funding round priced it at $852 billion. Anthropic’s disclosed $47 billion annualized recurring revenue run rate—nearly double OpenAI’s pace—reflects surging enterprise adoption and model performance gains, reinforced by secondary-market trading near $1.2 trillion in July. OpenAI’s 34.5% odds capture its earlier scale and Microsoft-backed ecosystem, yet lack recent comparable momentum. Lower-probability names such as Stripe, Databricks, and Canva trail far behind in both reported valuations and AI-driven growth trajectories, leaving little room for near-term shifts absent major new funding or regulatory events.