Summary
Every technological revolution arrives with a capital cycle attached: railroads, radio, the dot-com boom, clean tech. AI is no exception. This piece argues that the IPOs of OpenAI and Anthropic will likely mark the high-water mark of the current AI bubble, the point where enthusiasm broadens from insiders to the public, narratives harden, and retail access opens up. That doesn't mean AI collapses. It means the next phase rewards execution over narrative, distribution over novelty, and profitability over scale at any cost.
Every technological revolution comes with a capital cycle. Railroads. Radio. The dot-com boom. Clean tech. In each case a genuinely transformative technology pulled in enormous investment, soaring valuations, retail speculation, and eventually a peak.
AI won't be the exception. If history is any guide, the crest of this cycle arrives alongside the IPOs of OpenAI and Anthropic.
Why IPOs Mark Peaks
Market tops form when enthusiasm broadens from insiders to the general public. By the time a flagship company lists at an enormous valuation, three things are usually true.
Private capital has already taken most of the early upside. Venture firms, strategic investors and employees have marked valuations up through successive rounds.
The narrative has hardened. The story has moved from "this might work" to "this changes everything". Scepticism thins out and coverage turns celebratory.
Retail access opens. An IPO lets ordinary investors buy into something that was previously private, which has historically been a late-stage signal.
Netscape's 1995 listing lit the fuse on the dot-com boom. Facebook's 2012 IPO closed one phase of social media growth and opened a more sober, monetisation-focused one. IPOs don't cause peaks. They tend to coincide with them.
Why These Two Companies Matter
OpenAI and Anthropic aren't simply AI startups. They're the symbolic anchors of the generative AI era. Their models define the frontier, their partnerships shape the cloud ecosystem, and their private valuations already price in trillion-dollar expectations.
A listing from either would bring a valuation in the hundreds of billions, heavy retail participation, saturation media coverage, and immediate comparisons to Google, Amazon and Nvidia.
That moment would be the financial formalisation of the AI boom.
The Late-Cycle Signals Are Already Here
The current wave carries several familiar markers: hyperscaler arms races in infrastructure, GPU demand running well ahead of supply, seed-stage companies raising at unprecedented valuations, "AI" appended to nearly every pitch deck, and public markets rewarding almost any exposure to the theme.
None of that invalidates the technology. The internet was real. So were mobile and cloud. Capital cycles overshoot even when the underlying shift is genuine.
What Comes After the Peak
If the IPOs do mark the top, AI doesn't collapse. Valuations compress, margins normalise, consolidation accelerates, and attention shifts from capability demos to business models that actually work.
The next phase rewards execution over narrative, distribution over novelty, and profitability over scale at any cost.
A Peak Is Not an End
It's worth separating the technological trajectory from the financial exuberance. AI will keep advancing, models will keep improving, and use cases will keep expanding across healthcare, energy, defence, education and finance.
Markets still move in cycles. When the flagship companies of a revolution finally ring the opening bell, it usually means the story has travelled from speculation to saturation.
If and when OpenAI and Anthropic list, it won't mark the end of AI's impact. It may well mark the high-water mark of this particular bubble.