GPT-6 Astra Scores 99.9% on ARC-AGI-3 and Builds 3D Cities in Unity

OpenAI released GPT-6 Astra with ARC-AGI-3 at 99.9% and FrontierMath Tier 4 at 98%. It can assemble explorable 3D city scenes in Unity, while Codex harness speeds up task completion by 1.9x.

2026-09-04 ~ 2026-09-04 · 3 related posts

• GPT-6 Astra benchmarks revealed: 99.9% on ARC-AGI-3, 1.9x faster than GPT-5.6 Sol in Codex — whoiskatrin · 2026-09-04
• GPT-6 Astra builds explorable 3D city scenes in Unity, 1.9x faster than GPT-5.6 Sol — ChrisGPT · 2026-09-04
• Leaked GPT-6 'Astra' reportedly builds Unity 3D cities, 1.9x faster than GPT-5.6 — Dr_Singularity · 2026-09-04