GPT-6 Astra solved ARC-AGI 3 with a native harness that preserves thinking and compaction
Prompt Engineering · youtube · 2026-09-04
A video from the Prompt Engineering channel explores how GPT-6 Astra solved ARC-AGI 3 thanks to its native harness that preserves thinking and supports compaction, and how to apply those harness-design lessons to your own setups. Sources include the ARC Prize blog and OpenAI's announcement page.
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