Anthropic has accused Chinese technology giant Alibaba of carrying out what it describes as the largest known attempt to extract the capabilities of its Claude AI model, escalating concerns over how leading AI systems are being copied and replicated. In a letter sent to US lawmakers, the company alleged that operators linked to Alibaba conducted nearly 29 million interactions with Claude using thousands of fraudulent accounts in an effort to harvest the model's knowledge and behaviour.The dispute boils down to what Anthropic calls a targeted attempt to steal key features from its Claude AI model.

Anthropic told US senators that Alibaba's Qwen lab used 25,000 fake accounts to run nearly 29 million exchanges with Claude between April and June.

Anthropic reveals Alibaba-linked Moonshot AI and two other Chinese labs created 24,000 fake accounts and 16 million interactions to extract Claude's AI