ChatGPT Co-Inventor Launches Jev: Claims 20-200x Faster, 40-400x Cheaper Than LLMs

zmkzmkz · x · 2026-09-22

A self-described ChatGPT co-inventor has launched Jev, a new type of frontier model built for composable, decision-optimized intelligence:

Researcher Alham Fikri Aji resurfaced with a full-circle note: 2 years ago his team introduced Statement Tuning (arXiv:2404.12897), training encoder models to output decision probabilities as a lightweight alternative to generative LLMs for zero-shot classification. He sees Jev as a similar idea productized, congratulates the team, and links the paper plus a crosslingual extension.

Related event: Ex-OpenAI Researcher Unveils Jev, a "System 1" Decision Model 200x Faster Than LLMs(30 posts)→

Original post →

More from Models

Models channel →