Chinese state-linked social media accounts amplified narratives celebrating the launch of Chinese startup DeepSeek's AI models last week, days before the news tanked U.S. tech stocks, according to online analysis firm Graphika.

The little-known artificial intelligence firm has emphasized research, even as it emerged as the brainchild of a hedge fund.

A frenzy over an artificial intelligence chatbot made by Chinese tech startup DeepSeek was upending stock markets Monday and fueling debates over the economic and geopolitical competition between the U.