GPT-6 'Astra' Does 34 Math Steps in Latent Space, 4x More Than Sol

MaartenBaert · reddit · 2026-09-10

Developer Maarten Baert built LatentMathBench to test latent-space reasoning without chain-of-thought, after rumors that GPT-6 'Astra' uses recurrent depth. Astra completed 34 consecutive simple math operations without CoT — 4x more than Sol (8) and far ahead of Claude Opus 4.6 (12) and 24 other models. The benchmark had seen little progress until Astra's release, suggesting a real architectural jump.

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