Anthropic says new measures like preserved thinking in Fable 5.1 and Opus 5.5 have reduced data harvesting through distillation attacks by about 90% to 99% (Anthropic) — SkimNews
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- Anthropic says new measures including preserved thinking in Fable 5.1 and Opus 5.5 have reduced data harvesting through distillation attacks by approximately 90% to 99%.
- The company states it has made substantial progress in recent months on reducing the effectiveness of distillation attacks targeting Claude.
Why it matters: If Anthropic's 90% to 99% reduction figure holds up, it sharply narrows a well-known pipeline by which competitors extract training signal from Claude's outputs — directly protecting model IP and shifting the economics of rival model development.
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