ChatGPT co-inventor launches Jev, a decision-making model claiming 200x speed and 400x cost gains
soumitrashukla9 · x · 2026-09-16
A developer identifying as a ChatGPT co-inventor unveiled Jev after two years in stealth, built with a new training method called RLCD.
- Positioning: optimized for decision-making rather than text generation — it generates probabilities for each option in parallel instead of emitting tokens one by one
- Claimed performance: 20-200x faster and 40-400x cheaper than LLMs, with output tokens free
- The author calls it "frontier composable intelligence" and the shortest path to AI-driven economic revolution
The thread includes a simplified example comparing vanilla LLMs vs. Jev on classifying prompt difficulty. Note all figures are self-reported and unverified by third parties.
Related event: TypeSafe exits stealth with decision model Jev and RLCD training method(86 posts)→
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