Self-proclaimed ChatGPT co-inventor launches Jev, claiming 20-200x speed and 40-400x cost gains

multiply_matrix · x · 2026-09-18

An account claiming to be a co-inventor of ChatGPT announced Jev, a new frontier model trained with a novel RL method called RLCD after two years in stealth. Claims:

The launch went viral on X. All figures are self-reported with no benchmarks or third-party verification yet.

Related event: Ex-ChatGPT figure launches Jev, a decision-only model claiming 20-200x speed(15 posts)→

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