SpaceX and Anthropic project $28.5 trillion and $30 trillion markets, respectively.

SpaceX's recent claim of a $28.5 trillion total addressable market (TAM) for its products and services has been rivaled by Anthropic, an artificial intelligence (AI) company, which announced its own estimate of a $30 trillion TAM. This announcement comes as Anthropic prepares for its initial public offering (IPO) and seeks to attract investors with ambitious projections. Both companies assert that their figures depend on capturing 100% of their respective markets, a scenario that remains highly unlikely.

Elon Musk's SpaceX posited its enormous market potential just two months ago, arguing that the future of space, connectivity, and AI services justifies a valuation exceeding $1.5 trillion. The bulk of SpaceX's TAM claim stems from its AI projections, which Musk estimates at $26.5 trillion. Anthropic's announcement follows closely behind, suggesting that the AI market could be even larger than previously thought. This competition highlights the growing optimism surrounding AI technologies as companies position themselves for significant growth in the sector.

Anthropic's financial performance adds weight to its claims. The company reported $11.6 billion in revenue for the second quarter of 2026, more than doubling its earnings year-over-year. It also noted a "small operating profit," indicating its potential to become a serious player in the market. However, both companies' revenue estimates are contingent on reaching their ambitious TAM figures, which are based on theoretical calculations rather than empirical data. Analysts have previously pointed out the challenges in accurately estimating TAM, often leading to inflated projections.

The stakes are high as both SpaceX and Anthropic aim to capture investor interest. While their claims may seem bold, they reflect a broader trend in the tech industry, where companies frequently tout large market potentials to entice funding. The challenge remains for these firms to deliver on their promises, as historical examples—such as Uber's vastly overstated TAM—serve as reminders of the risks inherent in relying on speculative figures. Investors will be watching closely to see if these bold visions can translate into actual market performance in the coming years.