🧰 Preserved thinking

The items that name it 3

• Anthropic says AI distillation attack defenses cut Claude extraction by 90% to 99%
  articleas tools2026-10-13It is written here as Preserved thinking (introduced with Claude Fable 5.1 and Claude Opus 5.5; protects reasoning context).

  introduced with Claude Fable 5.1 and Claude Opus 5.5; protects reasoning context

• Strengthening our defenses against distillation attacks
  articleas classification.key entities2026-10-13
• Strengthening our defenses against distillation attacks
  articleas tools2026-10-12

  Prevents new API accounts (created on or after August 31, 2026) from editing Claude's prior context, making repeated reasoning extraction through proxy networks harder; introduced with Claude Fable 5.1 and Claude Opus 5.5

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