OpenAI’s ChatGPT has picked Nvidia (NASDAQ: NVDA) over SpaceX (NASDAQ: SPCX) as the better stock to buy in Q4 2026.
The model pointed to the semiconductor giant’s dominance in artificial intelligence, arguing that it offers a superior risk-reward opportunity for investors.
The case for Nvidia stock
According to ChatGPT, Nvidia’s investment case is supported by proven financial results rather than future expectations.
In August, the company reported quarterly revenue of $96.2 billion, including $89 billion from its data center segment, as demand for AI infrastructure continued to accelerate.
Nvidia remains a key beneficiary of spending by cloud providers, enterprises, and governments building large-scale AI systems.
The model also highlighted Nvidia’s growing exposure to AI inference, which is becoming an increasingly important growth driver as artificial intelligence applications move from development into real-world deployment.
The technology firm has further strengthened its position through the successful rollout of its Blackwell platform while preparing the launch of its next-generation Rubin architecture.
ChatGPT noted that Nvidia continues to benefit from strong pricing power, with demand remaining robust despite reported increases in the cost of some next-generation AI systems.
The company also maintains significant competitive advantages through its CUDA software ecosystem, networking infrastructure, and full-stack AI platform.
The case for SpaceX stock
Although Nvidia emerged as ChatGPT’s preferred pick, the model stressed that SpaceX may offer greater long-term upside.
SpaceX has evolved beyond a traditional aerospace company, with businesses spanning Starlink, Starship, launch services, defense contracts, and growing involvement in AI-related infrastructure initiatives.
Among the developments cited by ChatGPT was Starship’s recent orbital mission and deployment of Starlink satellites, a milestone supporting the company’s goal of creating a fully reusable heavy-lift launch system.
If successful, Starship could significantly reduce launch costs and reshape the economics of the space industry.
The model also pointed to Starlink’s rapid expansion. The satellite internet network is estimated to serve around 10 million subscribers and generate more than $15 billion in annual revenue, making it one of SpaceX’s most valuable assets.
At the same time, SpaceX continues to dominate the global launch market through its reusable Falcon rocket fleet and unmatched launch cadence.
Combined with Starlink and Starship, these businesses have led some analysts to envision a valuation that could eventually reach trillions of dollars if the company successfully executes its long-term strategy.
The verdict
Despite recognizing SpaceX’s potential, ChatGPT concluded that Nvidia offers greater certainty heading into Q4 2026.
The model noted that Nvidia’s growth is already reflected in its earnings, revenue, and expanding AI market share. At the same time, much of SpaceX’s future value still depends on Starship’s success, regulatory approvals, and long-term execution.
To this end, ChatGPT suggested a hypothetical allocation of 70% Nvidia and 30% SpaceX for investors seeking exposure to both themes.
Featured image via Shutterstock
