Do DeepSeek’s A.I. Advances Mean US Tech Controls Have Failed?

The United States has worked steadily over the past three years to limit China’s access to the cutting edge computer chips that power advanced artificial intelligence systems. Its aim has been to slow China’s progress in developing sophisticated A.I. models.

Now a Chinese firm, DeepSeek, has created that very technology. In recent weeks, DeepSeek released multiple A.I. models and a chatbot whose performance rivals that of the best products made by American firms, all while using far fewer…