Mystery Model Jev Launches Claiming 200x Speed and 400x Cost Cuts, Devs Impressed

multiply_matrix · x · 2026-09-19

An account claiming to be a "co-inventor of ChatGPT" (@CompleteSkeptic) has launched Jev, a new frontier model built on a stealth two-year training method called RLCD, positioned as "frontier composable intelligence optimized for decisions." It claims 20-200x faster inference and 40-400x lower cost with free output tokens, calling itself the shortest path to an AI-driven economic revolution.

Well-known developer mitsuhiko boosted the launch, saying he was "really impressed" after playing with it, arguing Jev fits many applications where traditional LLMs weren't viable for speed or cost reasons, and predicting fast followers. The model's provenance is unclear and claims are unverified, but it's generating buzz.

Related event: TypeSafe AI Launches Jev, Claiming 200x Faster and 400x Cheaper Classification(6 posts)→

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