It seems every investor today is talking about Nvidia (NASDAQ: NVDA). Over the last five years, shares have risen in value by 3,400%. Over the past 12 months alone, the stock tripled in price.

This sudden rise has everything to do with artificial intelligence (AI). Nvidia's chips are widely accepted as the best on the market for this technology. There's a good chance the AI future will be powered by the company's products.

But it isn't the only AI company attracting huge interest. Billionaire investors are pouring huge sums of cash into other AI businesses. The two companies below look especially promising.

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Source Fool.com