OpenAI Rebounds: GPT-5.6 & Codex Drive Investor Demand

OpenAI is reportedly seeing renewed investor demand in private secondary markets. This comes after months of losing momentum. What's interesting is that even with this rebound, Anthropic continues to attract the strongest interest from investors. Private market investors are buying shares from employees and early backers since neither company is publicly traded. Dave McClure, founder of Practical Venture Capital, notes OpenAI has seen a "resurgence" in investor interest. Earlier this year, concerns about slowing growth and other factors impacted demand for OpenAI shares. The renewed interest in OpenAI is driven by recent product launches. The company previewed GPT-5.6 Sol in June, and has since expanded availability with GPT-5.6 Terra and GPT-5.6 Luna. Also, Codex and ChatGPT Work have reached 9 million active users. However, Anthropic remains the preferred AI investment. Glen Anderson of Rainmaker Securities says buyer demand still favors Anthropic by roughly five buyers for every two seeking OpenAI shares. The bottom line is that while OpenAI's valuation is up about 20% to approximately $933 billion, Anthropic is currently valued higher at about $1.2 trillion in secondary markets. This shows the ongoing competition for investor attention in the AI space.