For investors, DeepSeek's emergence is causing a serious rethink regarding sky-high valuations of U.S. tech firms, especially those invested in AI.

Chinese artificial intelligence startup DeepSeek released an update to its R1 reasoning model in the early hours of Thursday, stepping up competition with U.S. rivals such as OpenAI. Fiona Jones ...

AI-based system can create 10,000 combat scenarios in 48 seconds – a task that takes humans 48 hours, according to lead ...