By Kevin BucklandTOKYO (Reuters) -U.S. stock futures and Asian shares outside China slumped on Monday as investors weighed the implications of Chinese startup DeepSeek's launch of a free, open-source artificial intelligence model to rival OpenAI's ChatGPT.Meanwhile, the dollar rose after U.S. President Donald Trump threatened Colombia with retaliatory levies and sanctions for turning away military aircraft carrying deported migrants before a last-minute deal was agreed.U.S. Nasdaq Composite futures tumbled 2.3% as of 0634 GMT and S&P 500 futures sank 1.3%.Japan's Nikkei dropped 0.9%, reversing an initial advance. New Zealand's equity benchmark slipped 0.2% and Singapore's Straits Times index eased 0.1%.At the same time, Hong Kong's Hang Seng rallied 1% and mainland blue chips added 0.1%, even after data showed a surprise contraction in manufacturing this month.Pan-European STOXX 50 futures dropped 0.9%.DeepSeek "has raised the spectre of disruption in the tech landscape, with its emergence suggesting that China can continue to make strides in the AI race despite US restrictions," Yeap Jun Rong, a strategist at IG, wrote in a note.It "seems to instil some concerns over U.S. tech dominance", putting "tech companies' lofty valuation back under scrutiny", he said.In currencies, the dollar advanced 0.4% against the Chinese yuan in offshore trading, and gained 0.4% versus the Aussie and the New Zealand dollar, with the antipodean currencies tending to act as more liquid proxies for China's currency due to close trade ties.The Mexican peso slumped about 0.7% and the Canadian dollar eased 0.2%. The Colombian peso had yet to trade against the dollar, but had rallied 3.4% over the previous three sessions.investing.com