# GPT-6 Astra Achieves SOTA on ARC-AGI > Source: > Published: 2026-09-03 19:53:01+00:00 ARC Prize on X: "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:" 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: 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: Before launching ARC-AGI-3, we tested approximately 500 members of the general public to establish a human baseline for action efficiency, or simply, how quickly did people solve each environment? This gives us an efficiency metric to compare AI to humans. With the provider Astra creates a dense compact symbolic world model to complete ARC-AGI-3 environments. For example, in environment s5i5, Astra: - Recorded the current level, hub orientation, and mechanism lengths: "L8: hub q2 (8↓). Lengths: 14=1…" - It mapped operations to exact controls: In addition to achieving state-of-the-art scores on ARC-AGI-3, GPT-6 Astra achieved a record 95.0% on ARC-AGI-2 at $1.12/task, and tied Fable 5's high score of 98.5% at $0.28/task. Full results: arcprize.org/results/openai… For ARC-AGI-3 we tested GPT-6 Astra with both our Standard harness (the model decides which notes to carry forward) as well as a new provider adapter harness (which preserves opaque reasoning between requests and uses compaction). Going forward we will test all new models on