NEW YORK / SEOUL — After a challenging period during which investor sentiment had visibly shifted toward rival Anthropic, OpenAI is staging a swift comeback in the private secondary stock market. Driven by strong technical reviews of its next-generation artificial intelligence models and accelerating adoption of its enterprise automation suite, demand for unlisted shares in Sam Altman’s flagship firm is rebounding sharply.

According to a report published on July 20 (local time) by US financial news outlet Business Insider, institutional capital and private accredited investors are returning to OpenAI in substantial numbers, leading to a noticeable tightening of buy orders across major secondary trading desks.

Adam Crawley, co-founder of private share transaction platform Augment, highlighted the turnaround, stating that "investors are actively returning to OpenAI." Glen Anderson, Chief Executive Officer of Rainmaker Securities—a brokerage firm specializing in pre-IPO equity transactions—noted that while secondary market demand for Anthropic remains exceptionally robust, purchase orders for OpenAI equity have recorded a sharp, noticeable uptake in recent weeks.

Quantifying the shift in private market dynamics, Anderson explained that for every five investors currently seeking to acquire Anthropic shares, approximately two are now seeking OpenAI shares—a significant narrowing of what had previously been a widening gap in investor mindshare. Dave McClure, founder of Practical Venture Capital, an institutional fund specializing in late-stage pre-IPO technology investments, echoed this outlook, noting that "market enthusiasm surrounding OpenAI has risen visibly over the past month."

Valuation Surge and Pricing Dynamics

Data compiled by secondary market tracking and valuation platform CapLight indicates that OpenAI’s current private market valuation stands at $933 billion (approximately 1,380 trillion KRW). This figure represents an approximate 20% surge compared to three months prior.

In March 2026, OpenAI was valued at $852 billion. However, during late spring, its secondary market equity was trading at an approximate 10% discount to its benchmark valuation as capital poured heavily into Anthropic’s corporate ecosystem. In a striking reversal, recent secondary transactions are taking place at a 10% premium above the official valuation, reflecting a rapid repricing of the company’s future revenue trajectory.

Industry analysts attribute this sudden recovery in investor confidence primarily to the performance benchmarks of OpenAI’s newly unveiled flagship model, GPT-5.6 Sol. Benchmark evaluations indicate that GPT-5.6 Sol effectively matches the frontier capabilities of Anthropic’s flagship offerings, Claude Mythos 5 and Fable 5, narrowing the technical edge Anthropic had previously commanded.

Furthermore, OpenAI’s commercial enterprise push is showing strong momentum. The developer-focused coding engine Codex and the corporate workflow automation suite ChatGPT Work have together surpassed 9 million active users. Although Anthropic held an early B2B lead with tools like Claude Code and Claude CoWork, OpenAI's upgraded enterprise toolset has restored competitive parity in the enterprise software sector.

Relative Pricing Attractiveness and Leadership Outlook

Another critical driver behind the capital inflows is relative asset pricing. Throughout the second quarter of 2026, Anthropic was widely viewed by institutional funds as a lower-priced, high-upside investment option relative to OpenAI. Following Anthropic's rapid valuation run-up, however, this valuation dynamic has largely inverted. Institutional investors are now purchasing OpenAI shares to balance their portfolios and hedge concentration risks in Anthropic.

Reflecting on the turbulent period, OpenAI CEO Sam Altman recently shared a candid assessment on social media platform X (formerly Twitter):

"The past 12 months were not our best time, and most of that responsibility falls on me. However, the next 12 months are going to be our absolute best."
Persistent Risks: Low-Cost Chinese Open-Source Competition
Despite the market rebound, long-term commercial threats remain prominent. The rapid emergence of highly capable, ultra-low-cost open-source AI models developed by Chinese technology firms poses a direct threat to OpenAI’s pricing power and unit margins.

Chinese AI startups and tech giants, such as Moonshot AI with its Kimi framework and Alibaba with its Qwen suite, have released high-performing open-source models at a fraction of the operating cost of Western proprietary systems. These low-cost alternatives could limit OpenAI’s ability to maintain high subscription fees across enterprise and developer channels.

Practical Venture Capital’s Dave McClure cautioned that "if the offensive from Chinese firms and the broader open-source ecosystem continues at its current pace, OpenAI’s profitability could come under severe pressure," concluding that "OpenAI still has a substantial set of operational and strategic hurdles left to navigate."

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