Recently, AI company Anthropic has seen explosive growth in its valuation on secondary markets, with quotes from some trading platforms approaching even surpassing $1 trillion, sparking intense interest among Silicon Valley investors. This price level was considered unimaginable just weeks ago, but as market sentiment remains bullish toward generative AI prospects, investors are scrambling to acquire limited share supply. Since neither Anthropic nor OpenAI is publicly listed, most investors can only obtain shares through secondary markets by purchasing them from current employees or early shareholders. On private equity platform Forge Global, Anthropic's current valuation stands at approximately $1 trillion, while OpenAI's valuation reaches about $880 billion—slightly higher than during its March financing round this year—but overall demand clearly lags behind that of Anthropic. Market sources reveal multiple high-value indicative transactions have recently emerged: Some shareholders attempted to sell Anthropic stakes valued at $1.15 trillion, prominent growth funds submitted acquisition offers around $1.05 trillion, and one investor proposed exchanging real estate for shares. Meanwhile, sellers remain extremely scarce, with many bids being snapped up within hours. Notably, merely three months prior, Anthropic had completed a funding round led by GIC and Coatue, then valuing the company at roughly $380 billion. The rapid doubling of valuation in such a short period stems both from its rapidly growing revenue and business momentum driven by the AI coding assistant Claude Code, alongside market-driven "fear of missing out" (FOMO) sentiments. In contrast, secondary market activity surrounding OpenAI appears relatively subdued. Although its latest financing round achieved an impressive valuation of $852 billion, prevailing market prices currently fall below this figure, indicating a noticeable shift in investor enthusiasm toward Anthropic. Industry insiders note that this wave of valuation escalation partly exceeds fundamental metrics, reflecting instead fierce competition among capital players vying for positions as the next generation of AI giants.