Anthropic has pushed its massive initial public offering to November, according to people familiar with the matter, moving back from earlier expectations of an October debut for the landmark listing. An IPO would mark the company's shift from private ownership to public trading, opening its shares to outside investors for the first time.

The schedule shift arrives as some of the industry's biggest names call for a temporary slowdown in AI development. Even so, some sources claim the November target was set before a warning from a former Anthropic researcher ignited the AI safety debate and fueled calls for deceleration.

Several advisers have endorsed the timeline change so far. They noted that a November debut gives the AI leader a chance to report strong third-quarter earnings and prove it can still hold its own, even after rival firm OpenAI released its new Astra model in September. The timing matters because public market investors typically scrutinize a company's most recent financial results ahead of a listing.

AI executives support a development slowdown

Among the first executives to voice the need for deceleration were Anthropic's Dario Amodei, OpenAI's Sam Altman, and xAI's Elon Musk. Notably, the calls for restraint are coming from the heads of the very companies building the technology.

Writing in his latest blog post, Amodei argued there is significant risk in continuing at the current development pace. He asserted that companies would need to build more cautiously going forward, and said pacing their work would allow them to deal with any eventualities if they occur. He also called for independent AI monitoring, industry-wide regulatory measures, and global frameworks.

Rival companies specifically favored the third-party oversight. OpenAI's Altman openly stated in a post on X: “Committing to having independent evaluators with employee-like access is a great idea, and we will do the same. We'll have more to share soon.”

Jacob Coxon, an AI researcher who left Anthropic, had also cautioned that unless the industry slows its rapid progress, humanity could face an existential threat in the near term. He has asserted that employees at artificial intelligence firms are already very concerned about what the future holds for mankind over the next two years.

“It's not at all an exaggeration to say that the people who are involved with both founding these companies and building the tech believe there is a possibility of human extinction,” he contended.

Anthropic is set to meet with prospective investors within a few days, some of whom will require more details on how a possible slowdown in product launches would impact the company's financial forecasts. So far, Anthropic's advisory board members and investors maintain that any such delay in developing new products will not significantly impact revenue, since the company's current products are highly profitable — they even project the firm's revenue exceeding $110 billion per year.

Investors ask Anthropic to establish strong protections

During a San Francisco venture capital gathering on safety standards, Anthropic executives unveiled advanced product capabilities. Jared Kaplan, Benjamin Mann, and Andrej Karpathy showcased the Model Hardware Standard, which enables AI agents to physically control instruments such as robotic arms, a demonstration of how AI capabilities are extending beyond software into the physical world.

While the IPO itself barely came up in the discussions, some backers emphasized that building strong guardrails before listing on the stock market is the best way to avoid long-term operational risks. Going public means facing intense shareholder scrutiny, making early security guard essential for protecting the company from future fallout.

November IPO puts pressure on Anthropic

The extra time could also give Anthropic an opportunity to strengthen its financial case ahead of the listing. Investors will likely focus on revenue growth, operating costs, demand for Claude, and the company's ability to turn rising AI usage into sustainable profits.

The company's valuation expectations are particularly important, because a $2 trillion price tag would require investors to accept a very high growth outlook — a level that would rank Anthropic among the most valuable listed companies in the world. The timing also places Anthropic directly in competition for investor attention with other major AI companies raising large amounts of capital.

As the AI industry enters a period of intense competition, investors will be watching closely to see whether Anthropic can maintain strong demand while addressing concerns over safety, regulation, and the cost of developing increasingly powerful models.

People are betting on Anthropic to lock in a $2 trillion valuation and raise a whopping $100 billion with its IPO, easily topping the previous record set by SpaceX back in June.

Meanwhile, OpenAI is holding off on going public until 2027, opting instead for a new financing deal to push its value past $1.2 trillion. The company pocketed over $120 billion in its last round, and some Anthropic investors fear a repeat performance will drain the market's appetite before Anthropic even lists.