Anthropic is preparing to begin marketing its initial public offering in mid-October, with a potential listing timed just before the U.S. midterm elections in November. The schedule marks a shift from earlier expectations that centered on an early-September prospectus release.

Sources familiar with the process indicate the company now plans to file its prospectus later in September. Anthropic confidentially submitted a draft S-1 registration statement to the Securities and Exchange Commission on June 1, positioning it to move forward once regulatory review concludes, subject to market conditions.

Banks, Credit Facility and Timeline Details

Morgan Stanley, Goldman Sachs, JPMorgan and Citi are among the banks working on the offering. Anthropic is also seeking to finalize a $15 billion revolving credit facility before deeper engagement with analysts. Meetings with analysts typically occur weeks ahead of a public prospectus, though the banks already maintain familiarity with the company.

The overall timeline remains flexible and could adjust based on regulatory feedback, financing progress and broader market conditions. No share count or pricing has been set.

Valuation Ambitions and Growth Metrics

Anthropic’s most recent private financing valued the company at roughly $965 billion. Some investors are now discussing a potential public-market valuation near $2 trillion. That figure would place the offering among the largest in history and above the $1.77 trillion valuation SpaceX achieved in its June listing.

Revenue momentum has been a central factor in the discussion. Second-quarter revenue more than doubled to $11.6 billion. By the end of July the annualized revenue run rate exceeded $65 billion, up from about $9 billion at the end of 2025. By comparison, OpenAI’s corresponding run rate stood above $40 billion, with second-quarter revenue of $6.7 billion.

Enterprise adoption data also shows Anthropic holding a modest edge. In July, 43.5 percent of U.S. companies purchased Anthropic subscriptions or tokens, compared with 39.7 percent for OpenAI, according to one industry index.

Cost Pressures and Market Context

Investors will scrutinize margins, cash burn, model costs and customer concentration once the S-1 becomes public. Anthropic’s Fable 5 model carries higher token prices than comparable OpenAI offerings—$10 per million input tokens and $50 per million output tokens versus lower rates elsewhere—raising questions about whether superior performance will consistently command premium pricing.

Broader industry analyses point to rising inference costs even as unit token economics improve. Quality-adjusted model prices have been declining in some measures, while full enterprise deployment of AI tools continues to lag headline adoption rates. Visibility into audited financials remains limited until the prospectus appears.

The rapid climb of frontier AI companies to high private valuations has compressed the traditional post-IPO growth window. Many of the gains once associated with public listings have already occurred in private markets. Global AI model and platform spending is projected to rise sharply this year, with total AI investment expected to exceed $1 trillion.

Comparison with Recent Large Listings

SpaceX’s June IPO at $1.77 trillion provides the closest recent benchmark. An Anthropic valuation approaching $2 trillion would invite direct comparison on size, investor demand and subsequent trading performance. Some estimates suggest the company could seek to raise as much as $100 billion in the offering.

Discussions around total addressable market have also surfaced figures above $30 trillion, framed around the scope of work AI models could eventually address. These projections remain forward-looking and subject to change as the company finalizes its disclosures.

The mid-October marketing window will give public investors their first formal opportunity to assess whether the growth trajectory and enterprise traction support valuations established in private rounds. Final terms will depend on market reception once the prospectus and roadshow details become available.