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90.5% to 81.0%: The Open Model That Ships Weaker on Purpose

On October 23, 2026, Moonshot AI released Kimi K3.1 Pro — and then did something no frontier lab has done at launch: it announced, in its own technical blog, that it had deliberately made the model worse at something. Not worse in general. Worse at hacking. Moonshot found that cyber-related materia…

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  1. 2026-10-27 15:57 · DEV Community — Machine Learning
    90.5% to 81.0%: The Open Model That Ships Weaker on Purpose

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  1. Moonshot apologises after Kimi K3.1 Pro roll-out stumbles as promotional scrutiny widens — South China Morning Post Tech
  2. AI news of the week — r/ArtificialInteligence
  3. 😺 Claude crossed a paywall on its own — The Neuron
  4. Kimi continues to challenge the frontier with K3.1 Pro — The Rundown AI
  5. Context Bombs: Making attacking agents pay — r/ArtificialInteligence
  6. Kimi Apologizes for K3.1 Pro Rate Limits, Resets 25% of Members' Monthly Quota and Trims Sub-Agents — Pandaily
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  8. Kimi K3.1 Passes the Rubik's Cube Test — Matthew Berman

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