U.S. House Committees Investigate DoorDash Over Use of Chinese AI Model for Code Review

Jul 31, 2026

Two U.S. House committees have launched an investigation into DoorDash over its internal use of Moonshot AI's Kimi K2.6, a Chinese-developed open-weight model, for software code reviews. Chairmen John Moolenaar and Andrew Garbarino requested that DoorDash CEO Tony Xu provide a full list of Chinese models used and security testing records by August 14, 2026. The probe highlights growing tension between commercial cost-saving strategies and national security concerns regarding U.S. reliance on Chinese technology.

DoorDash congressional investigation

▪The congressional letter requires DoorDash to provide a list of all Chinese AI models used and security testing records by August 14, 2026.
▪The congressional letter requests that DoorDash staff responsible for AI infrastructure, software security, model evaluation, procurement, and compliance appear for in-person briefings by August 21, 2026.
▪The House Select Committee on China and the House Committee on Homeland Security launched an investigation into DoorDash's use of Chinese artificial intelligence models.
▪House Select Committee on China Chairman John Moolenaar and House Committee on Homeland Security Chairman Andrew Garbarino sent a letter on July 31, 2026, to DoorDash co-founder and CEO Tony Xu requesting information on Chinese AI models used by the company.

Chinese Kimi model integration

▪DoorDash co-founder Andy Fang publicly disclosed on X that DoorDash integrated the Kimi K2.6 model, developed by Beijing-based Moonshot AI, into its internal code review process for lower-level tasks.
▪DoorDash's AI research lab stated on X that pairing Moonshot AI's Kimi K2.6 with Anthropic's Fable 5 outperformed previous Anthropic-only configurations, including Sonnet 4.6 and Opus 4.8, at a lower cost.

National security AI concerns

▪The White House Office of Science and Technology Policy stated on July 22, 2026, that Moonshot AI may have operated a covert platform to conduct large-scale distillation against American AI models.
▪House Committee on Homeland Security Chairman Andrew Garbarino stated that a Chinese open-weight model matching leading U.S. models on vulnerability discovery and cybersecurity tasks is highly alarming.

Chinese AI cost advantages

▪U.S. lawmakers acknowledge that competitive capabilities, lower costs, and greater customization drive American technology firms and startups to evaluate and deploy Chinese-developed open-weight models.
▪Moonshot AI released its open-weight model Kimi K3 in July 2026, claiming to have significantly narrowed the performance gap with leading U.S. models.

Tech sector AI procurement

▪U.S. tech leaders, including Coinbase CEO Brian Armstrong and Lindy founder Flo Crivello, have publicly acknowledged using Chinese AI models to reduce operational costs.
▪While some U.S. government agencies have banned Chinese AI models like DeepSeek, there is currently no blanket prohibition on U.S. private companies adopting them.
▪The joint congressional investigation into Chinese AI model adoption began in April 2026 with letters sent to Anysphere, Cursor, and Airbnb.