Chinese artificial intelligence (AI) startup DeepSeek claims to have developed an AI assistant with performance comparable to leading Western models like OpenAI's ChatGPT and Google's Gemini but at a fraction of the cost.

Asked about sensitive topics, the bot would begin to answer, then stop and delete its own work. It refused to answer questions like: “Who is Xi Jinping?”

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Silicon Valley and Washington leaders said the app shows China can challenge the U.S. The Nasdaq lost 3 percent and chipmaker Nvidia shed $589 billion in market capitalization.

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In some ways, DeepSeek was far less censored than most Chinese platforms, offering answers with keywords that would often be quickly scrubbed on domestic social media. Other times, the program eventually censored itself.