In contrast with OpenAI, which follows a closed model, DeepSeek’s AI model discloses its full chain of reasoning in an open source model. Altman called DeepSeek’s R1 model “impressive” during a short thread on X.com early last week.

OpenAI Chief Executive Sam Altman said he believes his company should consider giving away its AI models, a potentially seismic strategy shift in the same week China’s DeepSeek has upended the artificial-intelligence industry.