Ark Invest CEO Cathie Wood said the AI space is already being ruled by a group of “big four” players.

The 69-year-old investor said OpenAI, Anthropic, Elon Musk’s xAI, and Google’s Gemini are competing for dominance—and the competition is fierce. She noted, ultimately, the four current competitors could be narrowed down to two.

“The number of companies competing, truly competing, in the Large Language Model space has shrunk,” she told Bloomberg .

The recent “acquihires” conducted by OpenAI and Meta , which is not in Wood’s big four, are also examples of the AI space getting smaller, and of “other companies not making it,” she said.

ChatGPT maker OpenAI has been one of the most prolific buyers in the startup space this year. In 2025 alone, the company shelled out $6.4 billion to

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