OpenAI and Anthropic are preparing for landmark IPOs that will test public-market appetite for frontier AI labs, with Anthropic seen as holding a structural advantage
Executive summary: Spanish business daily Cinco Días reports that OpenAI and Anthropic are preparing their stock-market debuts, with Anthropic described as starting from a position of advantage. These would be the first major IPOs for frontier AI model providers, setting valuation benchmarks for the entire generative-AI sector and testing investor tolerance for high-burn, compute-intensive business models.
Who is involved: OpenAI, Anthropic, their existing investors (including Microsoft, Amazon, Google), and public-market participants; coverage by Cinco Días (El País).
Likely next: Formal confidential filings with the SEC, investor roadshows, and heightened scrutiny of AI safety governance and compute-cost trajectories ahead of pricing.
Cinco Días reports that both OpenAI and Anthropic are advancing toward initial public offerings, marking the first major public listings for pure-play foundation-model companies. The piece notes Anthropic — builder of the Claude model family — enters the process with a perceived edge, likely reflecting its governance structure, enterprise traction, and positioning around AI safety. No valuation ranges or timetables are disclosed. The development arrives as capital-expenditure cycles for AI infrastructure reach late-stage intensity, per independent research.
Timeline
- — Alibaba, nuove azioni per oltre 10 miliardi di dollari. Obiettivo: finanziare l'IA (la Repubblica — Economia)
- — HTX Research Examines U.S. AI Equities: Technology Remains Early, While Capital Expenditure and Valuations Have Entered the Late Cycle (PR Newswire)
- — ‘We are hitting a different chapter’: OpenAI leader warns of threat of ‘persistent’ AI cyber-attacks (The Guardian — Business)
- — Las claves: dos colosos de la IA se miden en una carrera que se recordará mucho tiempo (El País — Economía)
Analysis — what this means
Likely next events
- SEC confidential S-1 filings expected from one or both companies by Q4 2026
- Anthropic's annualized revenue run-rate disclosure (last reported >$1B) will be a key benchmark
- EU AI Act enforcement begins August 2026; fines up to 7% of global turnover for non-compliance
- Nvidia Blackwell GPU supply constraints may affect 2027 capex guidance for both firms
Sectors affected
- Foundation-model AI labs
- AI cloud infrastructure (hyperscalers)
- Semiconductor capital equipment
- Enterprise software (AI copilots)
Regulatory implications
- SEC will scrutinize dual-class share structures and related-party compute contracts
- EU AI Act designates foundation models as high-risk; compliance costs rise post-IPO
- FTC/UK CMA may review market concentration in frontier model layer
Historical parallels
- Google IPO 2004 — dual-class structure set precedent for founder control
- Meta IPO 2012 — high capex, user-growth narrative, post-listing volatility
- Nvidia 2016-2017 pivot to AI — valuation rerating driven by data-center revenue
Sources
- Las claves: dos colosos de la IA se miden en una carrera que se recordará mucho tiempo — El País — Economía
- ‘We are hitting a different chapter’: OpenAI leader warns of threat of ‘persistent’ AI cyber-attacks — The Guardian — Business
- HTX Research Examines U.S. AI Equities: Technology Remains Early, While Capital Expenditure and Valuations Have Entered the Late Cycle — PR Newswire
- Alibaba, nuove azioni per oltre 10 miliardi di dollari. Obiettivo: finanziare l'IA — la Repubblica — Economia
Related cases
- OpenAI’s decision to deny Cursor access to its models threatens the AI-powered coding assistant’s competitiveness and could reshape the developer tools market
- AMD’s up‑to‑$5 billion stake in Anthropic signals a major push into foundation‑model AI as the startup readies its IPO
- Seattle Times and Newsday sue OpenAI and Microsoft over alleged unauthorized use of their journalism to train AI models
- Cerebras reports a $25.4 billion backlog, driven largely by an OpenAI agreement for AI compute capacity
- OpenAI launches advertising on ChatGPT in Italy, creating a new revenue stream for the AI platform
- Anthropic postpones its IPO until shortly before the November US Congressional elections, targeting a potential $2 trillion valuation