Nvidia shares climbed Wednesday after it beat quarterly earnings expectations on fierce demand for its sophisticated chips that power artificial intelligence.

The solid results come amid increasing talk among Wall Street analysts of an AI bubble, with all eyes on how Nvidia, the industry's bellwether company, will weather the doubts.

"There's been a lot of talk about an AI bubble," Nvidia chief executive Jensen Huang said on an earnings call.

"From our vantage point, we see something very different."

Jensen reasoned that companies around the world are shifting from classical computing machines and software relying on CPUs to AI-infused systems needing graphics processing units (GPUs) that are Nvidia's specialty.

Add to that software programs rapidly adapting to the AI age and a trend

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