Anthropic, the artificial intelligence company co-founded by former OpenAI researchers, has accused Chinese tech giant Alibaba of orchestrating the largest cloning campaign ever measured against its Claude model. According to a letter sent to the US Senate, operators linked to Alibaba and its Qwen AI lab allegedly generated over 28.8 million interactions with Claude through nearly 25,000 fraudulent accounts, violating terms of service and US-imposed access restrictions.
Anthropic's allegations and the Senate letter
In a June 10, 2026 letter addressed to Senators Tim Scott and Elizabeth Warren, Anthropic presented what it calls "new confidential evidence of the largest campaign to illicitly extract Claude's capabilities we have ever measured." The campaign, conducted between April 22 and June 5, targeted some of Claude's most valuable features, such as agentic reasoning, software engineering, and long-horizon tasks. Anthropic claims Alibaba acted in defiance of restrictions imposed by the Trump administration to prevent critical technologies from reaching China.
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This incident fits into the broader technological tensions between the US and China, where Beijing seeks to close the gap in advanced language models following the release of Mythos, another Anthropic model, and subsequent export limitations. The accusation comes as Europe accelerates its AI sovereignty push, as detailed in our coverage of European moves to reduce dependence on non-EU players.
The scale of the attack and geopolitical context
With 28.8 million exchanges and 25,000 accounts, the attack represents a quantitative leap over previous attempts to clone AI models. Anthropic explained that the operation circumvented geographical and technical barriers designed to protect advanced models, raising questions about the security of AI infrastructures. Alibaba's use of multiple accounts suggests industrial coordination rather than individual hackers. This case follows the staged release of GPT-5.6 by OpenAI at the White House's request over safety concerns, as reported in a related article.
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The implications are profound: if successful, Alibaba could accelerate development of rival models, undermining America's competitive edge. Anthropic calls for severe sanctions and stronger regulations against intellectual property theft in AI. Sources close to the company indicate the letter may lead to congressional hearings and new trade restrictions.
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Alibaba's response and future outlook
Alibaba has not yet issued an official statement, but internal sources cited by Chinese media deny the allegations, calling them "unfounded." However, the volume of evidence presented by Anthropic, including access logs and anomalous usage patterns, makes it difficult to ignore the severity of the incident. Experts warn that without an international legal framework for protecting AI models, similar episodes could become routine. For insights into data protection techniques, refer to the analysis on ELK Stack for centralized logging.
