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US President Donald Trump has called Chinese AI start-up DeepSeek’s strong showing a “wake-up call” and a “positive” development for America’s tech sector. Trump’s January 27, 2025, remarks came after the DeepSeek chatbot app dethroned OpenAI’s ChatGPT to claim the top spot on Apple’s US App Store, potentially changing the artificial intelligence (AI) landscape because of the firm’s open-sourced approach. The announcement sparked a sell-off in US tech stocks, with investors reportedly fearing the new AI model could threaten the dominance of current industry leaders. Trump also warned he would slap tariffs on foreign-made semiconductors, including those made by Taiwan’s TSMC, if they do not start producing them in the US.