SolidGoldMagikarp (plus, prompt generation)

MATS Fellow:

Jessica Cooper (Rumbelow), Matthew Watkins

Authors:

Jessica Cooper, Matthew Watkins

Citations

18 Citations

Abstract:

Anomalous tokens: a mysterious failure mode for GPT (which reliably insulted Matthew)

  • We have found a set of anomalous tokens which result in a previously undocumented failure mode for GPT-2 and GPT-3 models. (The 'instruct' models “are particularly deranged” in this context, as janus has observed.)
  • Many of these tokens reliably break determinism in the OpenAI GPT-3 playground at temperature 0 (which theoretically shouldn't happen).

Recent research

Counterfactual Debugging the World Model Transfer Gap

Authors:

Mingxuan Li

Date:

December 8, 2026

Citations:

CIAware-Bench: Benchmarking Control Intervention Awareness Across Frontier LLMs

Authors:

Joachim Schaeffer, Alexander Panfilov

Date:

October 5, 2026

Citations:

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