GPT-6 Astra represents a step-function change in model capability for interactive reasoning problems. It scores 66% on ARC-AGI-3 using our standard harness, and nearly 100% with a continuous conversation harness and custom compaction, at a cost of roughly $360 per game. In fact,…↗
·@fchollet·Sep 3, 2026·model-release·arc-agi-3·continuous-conversation-harness·dsl-shorthand-notation·gpt-6-astra