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Nvidia seen changing AI landscape

TORONTO, Canada — Artificial intelligence (AI) chip juggernaut Nvidia sat on the throne as the world's biggest company, but behind its staggering success are questions on whether new entrants can stake a claim to the AI intelligence bonanza.

Nvidia, which makes the processors that are the only option to train generative AI's large language models, is now big tech's newest member, and its stock market take-off has lifted the whole sector.