The United States has significantly escalated its campaign against Chinese artificial intelligence developers, issuing a global diplomatic warning about alleged intellectual property theft. According to an exclusive Reuters report on April 24, 2026, the US State Department dispatched a diplomatic cable to posts worldwide, instructing staff to alert foreign counterparts about “concerns over adversaries’ extraction and distillation of U.S. A.I. models.” The cable specifically names prominent Chinese AI startups, including DeepSeek, Moonshot AI, and MiniMax, as key actors in these campaigns. The move represents one of the most aggressive diplomatic actions the US has taken in the AI domain to date.
The State Department’s directive aims to “warn of the risks of utilizing AI models distilled from U.S. proprietary AI models, and lay the groundwork for potential follow-up and outreach by the U.S. government.” This unprecedented move underscores Washington’s growing alarm over the rapid advancement of Chinese AI capabilities, which US officials believe is fueled in part by the unauthorized replication of American technology. The cable notes that a separate demarche request has been sent directly to Beijing to raise the issue with the Chinese government, indicating that the US intends to pursue this matter at the highest diplomatic levels.
The State Department’s action follows a White House memo from Michael Kratsios, director of the Office of Science and Technology Policy, which warned that “the US government has information indicating that foreign entities, principally based in China, are engaged in deliberate, industrial-scale campaigns to distill US frontier AI systems.” Kratsios alleged that Chinese campaigns were “leveraging tens of thousands of proxy accounts to evade detection and using jailbreaking techniques to expose proprietary information.”
(Related: OpenAI, Anthropic, and Google Unite to Combat Chinese AI Model Copying)
The Mechanics of AI Distillation and the US Legal Case
The core of the US accusation centers on the practice of “distillation,” a technique in which smaller, more efficient AI models are trained using the outputs of larger, more expensive frontier models. The State Department cable asserts that these “surreptitious, unauthorized distillation campaigns enable foreign actors to release products that appear to perform comparably on select benchmarks at a fraction of the cost but do not replicate the full performance of the original system.” The cable further alleges that the campaigns “deliberately strip security protocols from the resulting models and undo mechanisms that ensure those AI models are ideologically neutral and truth-seeking.”
The legal and policy response is already taking shape. The House Select Committee on China has advised Congress to direct the Commerce Department and the Department of Justice to “treat model extraction as industrial espionage” and to impose penalties sufficient to deter Beijing’s alleged theft of American innovation. The committee has also recommended that “adversarial distillation” be clearly defined and officially categorized as a controlled technology transfer, which would significantly ease the restriction of fraudulent Chinese access to US models and the prosecution of bad actors.
Earlier accusations from major US AI labs have provided the evidentiary backdrop for these policy moves. In January, Google claimed that commercially motivated actors attempted to clone its Gemini AI chatbot by prompting the model more than 100,000 times. In February, Anthropic accused DeepSeek, Moonshot, and MiniMax of generating over 16 million exchanges with its Claude model through approximately 24,000 fraudulent accounts. OpenAI has also confirmed that most attacks it has observed originated from China.
(Related: House Select Committee: China Buys What It Can and Steals What It Cannot in the AI Race)
Diplomatic Fallout and the Road to the Trump-Xi Summit
The timing of the State Department’s global warning is highly sensitive, coming just weeks before US President Donald Trump is scheduled to visit Chinese President Xi Jinping in Beijing. The accusations threaten to reignite tensions in the long-running tech war between the two superpowers, which had seen a brief period of detente brokered in October 2025. At least one analyst has noted that the ongoing war in Iran means Trump has “lost almost all his bargaining chips” heading into the summit, making the AI dispute an even more fraught element of the bilateral relationship.
The Chinese government has vehemently denied the allegations. The Chinese Embassy in Washington issued a statement to Reuters calling the accusations “groundless” and characterizing them as “deliberate attacks on China’s development and progress in the AI industry.” DeepSeek, which launched its V4 model on the same day as the cable was reported, has previously maintained that its models are trained on naturally occurring data collected through web crawling. As the diplomatic standoff intensifies, the global AI landscape is increasingly fracturing along geopolitical lines, with allies being asked to choose sides in a dispute that has profound implications for the future of technology.
The State Department’s move also raises difficult questions for US allies and partners. Many countries have already deployed or are evaluating Chinese AI models for government and commercial applications. The cable effectively asks these governments to reconsider those decisions and to treat Chinese AI models as potential security risks. For countries that have sought to maintain balanced relationships with both Washington and Beijing, the demand to take sides in the AI dispute represents a significant diplomatic pressure point. The response of key partners, particularly in Europe, Southeast Asia, and the Middle East, will be a critical indicator of how effectively the US can build a coalition around its AI governance concerns.