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US accuses China’s Moonshot of stealing from Anthropic’s Fable for latest AI model

By Thomson Reuters Jul 22, 2026 | 9:36 AM

By Doina Chiacu

WASHINGTON, July 22 (Reuters) – China’s Moonshot AI stole from Anthropic’s most sophisticated AI large language model, Fable, to help create its latest K3 release and has acquired advanced Nvidia AI chips, top White House ​tech official Michael Kratsios said on Wednesday.

“We have information that Moonshot AI ‌distilled Anthropic’s Fable for the development of its K3 model,” he said in a post on X. “Large-scale, covert industrial distillation aimed at stealing proprietary U.S. technology and undermining American research is unacceptable.”

He also said Moonshot AI had acquired servers containing powerful Nvidia AI chips called GB300s and had ‌used ​them in Thailand, “likely to train its AI models.” A senior ⁠Trump administration official said in ⁠February that Chinese AI startup DeepSeek’s latest AI model was trained on Nvidia’s most advanced AI chip, in what could represent a violation of U.S. export controls.

Moonshot and the Chinese Embassy in Washington did not immediately respond to a request ​for comment.

The U.S. State Department ordered a global push in April to bring attention to what it says are widespread efforts by Chinese companies, including Moonshot ⁠AI, to steal intellectual property from U.S. artificial ⁠intelligence labs, according to a diplomatic cable seen by Reuters.

Distillation is ​the process of training smaller AI models using output from larger, more expensive ones ​as part of an effort to lower the costs of training a ‌powerful new AI tool.

OpenAI has warned U.S. lawmakers that DeepSeek was targeting the ChatGPT maker and the nation’s leading AI companies to replicate models and use them for its own training, Reuters reported in February. The April cable from the State Department ⁠said, “AI models developed from 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.”

Chinese AI startup Moonshot on Friday ⁠unveiled Kimi K3, a 2.8 trillion-parameter model that it said ​is ‌the world’s largest open-weight AI system and delivers performance approaching ​U.S. giant ⁠Anthropic’s frontier Fable model.

The launch, which comes a month after Anthropic’s Fable and Mythos models were abruptly withdrawn by the U.S. government due to security concerns, underscores how quickly China’s open AI ecosystem is narrowing the gap with the most advanced U.S. systems.

(Reporting by Bhargav Acharya and Chris Sanders, writing by Doina Chiacu; Editing by David Ljunggren, Michelle ​Nichols and Mark Porter)