Reasoning models struggle to control their chains of thought, and that’s good

OpenAI Blog / 3/5/2026

Ideas & Deep AnalysisModels & Research

Key Points

  • Recent research reveals that state-of-the-art reasoning AI models have difficulty controlling their chains of thought during problem-solving.
  • This limitation prevents these models from autonomously generating unchecked or potentially unsafe outputs.
  • The lack of full controllability in reasoning is seen as beneficial for AI safety, reducing risks of unintended behaviors.
  • The findings suggest that current frontier models' reasoning constraints act as a safety feature rather than a flaw.
  • The research paper provides detailed analysis on why these limitations in chain-of-thought control can be reassuring in AI development.

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