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Anthropic says it cut Claude reasoning token theft by up to 99% in fight against industrial-scale distillation

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Anthropic says it cut Claude reasoning token theft by up to 99% in fight against industrial-scale distillation

The Decoder · Oct 13, 2026, 11:06 AM UTC

Anthropic says it has cut the extraction of Claude's internal reasoning tokens by 90 to 99 percent. The company links the large-scale distillation attacks to Chinese companies Zhipu and Moonshot, and has already banned tens of thousands of accounts.…