U.S. lawmakers are conducting an investigation into companies' usage of Chinese artificial intelligence models due to national security concerns.

Through letters, the House Committee on Homeland Security and the House Select Committee on the Chinese Communist Party requested Airbnb and Anysphere on Wednesday for information that may assist them in the probe.

The requested information included documents that can identify the Chinese AI models used by the companies.

The probe came after AI laboratories found that three Chinese AI companies, DeepSeek, Moonshot AI and MiniMax were able to extract information through adversarial distillation where the platforms were able to generate exchanges with American AI systems through about 24,000 fraudulent accounts, the committees said.