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Opus 5.5 reportedly caught OpenAI off guard, compressing GPT-6.1 Astra’s timeline and indirectly bringing “Bel,” the model that solved Navier–Stokes, closer to release

Coverage of "Opus 5.5 reportedly caught OpenAI off guard, compressing GPT-6.1 Astra’s timeline and indirectly bringing “Bel,” the model that solved Navier–Stokes, closer to release" from 1 source, with a live timeline of who reported what and when.

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  1. 2026-09-24 01:38 · r/singularity
    Opus 5.5 reportedly caught OpenAI off guard, compressing GPT-6.1 Astra’s timeline and indirectly bringing “Bel,” the model that solved Navier–Stokes, closer to release

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