Analyzing GPT-6 Astra's performance on ARC-AGI has been one of the highlights of my career: With our standard harness - which lets models carry notes forward and is what we've historically used for apples-to-apples comparisons - Astra more than doubles the previous verified high score, reaching 62.7%. We also tested Astra with a new provider adapter harness, configured to preserve the model's opaque reasoning state between requests and use native compaction as the context window grows. With…

ARC Prize@arcprizeSep 3

GPT-6 Astra by @OpenAI achieves SOTA on ARC-AGI: - Astra scores 63% on ARC-AGI-3, 99% via a new provider adapter harness - It surpasses human performance on 96% of ARC-AGI-3 levels - It builds the most precise symbolic model of novel environments we've seen Our analysis: