OpenAI's Astra shows harness capabilities moving into the model itself, but top scores still depend on costly inference. Per François Chollet, Astra scores 66% on ARC-AGI-3 under ARC Prize's standard harness; its 98.6% came from OpenAI's custom conversation harness at about $360 a game. ARC's team found the model inventing its own symbolic world modeling, which should worry scaffolding vendors. The NVIDIA trade does not change, because that bill still lands on inference. x.com



