OpenAI's GPT-6 Astra on ARC-AGI-3
Summary
GPT-6 Astra achieves state-of-the-art scores on ARC-AGI-3 with both the Standard and Provider Adapter harnesses, demonstrating higher action efficiency and the ability to turn unfamiliar environments into compact symbolic models. The article discusses Astra's performance, the development of a custom algebraic notation, and the use of external tools in the PRO-LONG harness, highlighting implications for frontier AI benchmarking and AGI progress.