Jev, built by a ChatGPT co-inventor, answers yes/no in 100ms for near-zero cost
PrajwalTomar_ · x · 2026-09-25
The author argues Jev — built over two years by a ChatGPT co-inventor — is the opposite of ChatGPT: it can't write or explain, can't hallucinate, and only returns yes/no decisions with confidence in 100ms, essentially free. He fed it 468 tweets with engagement metrics hidden and it picked his strongest hooks: 2,340 decisions in 60 seconds for 1.3 cents. He links a full course on using Jev as the decision-making brain for boring business calls, citing browser agents and a trading bot making calls every 300ms built on it.
Related event: Ex-OpenAI researcher launches Jev, a non-text "System One" decision model(12 posts)→
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