Polymarket forecasts a 90% probability that Anthropic's valuation will surpass $50 billion by 2026. This prediction follows recent news of OpenAI's $122 billion capital raise, which resulted in a post-money valuation of $852 billion. The likelihood of Anthropic reaching a $500 billion valuation by the end of 2026 has slightly decreased from 93% to 90% after a 4% rise over the past week. The outcome will be confirmed if Anthropic achieves a public or private valuation of $500 billion by December 31, 2026, as verified by official communications or credible reports. Earlier this year, Anthropic secured a $30 billion Series G funding round, achieving a $380 billion valuation, with investments from GIC, Coatue, and others.