Unverified50% confidenceFactExact time
In the ARK AGI 3 report, OpenAI enabled two harness settings (preserving the model's reasoning process across steps, and summarizing history rather than truncating it), allowing the model to take more actions and pass more levels under the same number of output tokens.
1
Sources
50%
Confidence
Long-term
Relevance
10/28/2026
First Seen
Sources
Harness Engineering: The Secret to Tripling the Same Model's Score
youtubeThe Agentic Enterprise10/28/2026
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