Anthropic about largest AI model extraction campaign

Anthropic says it has uncovered what may be the largest AI model extraction campaign ever detected.

In a confidential letter to U.S. lawmakers and White House officials, the company alleges that operators linked to Alibaba and its Qwen AI division created nearly 25,000 fake accounts and generated more than 28.8 million interactions with Claude between April 22 and June 5, 2026.

According to Anthropic, the goal was “distillation” using Claude’s responses to help train a competing AI system. The company claims the operation specifically targeted Claude’s most advanced capabilities, including coding, complex reasoning, autonomous agents, and long-range planning.

Anthropic argues that large-scale extraction efforts like this could allow rivals to accelerate AI development without bearing the full cost of training frontier models from scratch. The company is now urging Washington to strengthen protections for AI intellectual property, allow AI firms to share extraction data, and tighten enforcement around unauthorized model copying.



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