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Nvidia just showed that the harness, not the AI model, is now the real hero

Nvidia research shows that AI agents can perform well, and not go off the deep end, through fine-tuning, even if the AI model isn't that great at the task.

  • Nvidia's research reveals harness, not AI model, is crucial for long-horizon tasks.
  • Optimized harness and supervisor component boost Claude Opus 5's ARC-AGI-3 score to 100%.
  • Harness includes memory, context, feedback, and scaffolding for AI agents.

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