The surge in popularity of Chinese artificial intelligence (AI) app DeepSeek has overtook rivals such as ChatGPT to become the top-rated free app on Apple’s App Store. The app has grown in popularity since its launch, challenging the belief that the US is the unassailable leader in AI. DeepSeek’s emergence comes as the US is restricting the sale of the advanced chip technology that powers AI to China. This has resulted in AI models that require far less computing power than before. It also means that they cost a lot less than previously thought possible, which has the potential to upend the industry.

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