8 Jev Use Cases That Feel Like Cheating
A tour of TypeSafe AI's new decision-making model, Jev, and the eight things people already built with it in its first week: email sorting, ad blocking, instant video clipping, and more.
September 24thChatGPT co-inventor Diogo Almeida ships a model that's 200x faster and effectively free, but Matthew Berman's own chess test shows it losing on skill, only surviving the clock.
Jev trades general reasoning for raw speed and cost, so it wins at narrow, high-volume decisions but loses outright when an actual game of skill like chess requires it to think rather than just answer fast.
Diogo Almeida, a ChatGPT co-inventor, spent two years building Jev at TypeSafe AI: a 'decision model' trained with a new method called RLCD instead of RLHF, up to 200x faster and 400x cheaper than chat models, with free output tokens. It isn't a chatbot. It takes a state or a prompt and returns one of a fixed set of decisions, thousands of times per second, and TypeSafe claims zero hallucinations. Demos show it running a Doom agent, winning wiki-race speed tests, sorting 150,000 Skittles, and controlling a simulated Tesla and a AI Town crowd in real time. But when tested head to head at chess, Jev only beat Fable 5.1 by running the opponent out of time, and was cleanly checkmated by GPT-6 Astra in 18 moves, undercutting the idea that it can substitute for real reasoning.
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Berman introduces Jev, a new model that is 'hundreds of times faster' than traditional LLMs, with free unlimited output tokens.

Diogo Almeida's viral tweet explains he co-invented ChatGPT, then spent two years building Jev on a new training method, RLCD, instead of RLHF.

Jev plays Doom in real time and wins a wiki-race speed test against GPT-5.6 Terra, Claude Haiku 4.5, and Claude Sonnet 5 by several seconds.

A support-ticket routing example shows Jev picking from fixed categories, urgency, and priority options in milliseconds instead of generating open-ended text.

Berman frames RLHF's human-feedback bias as the cause of hallucination and cites an on-screen benchmark showing Jev-1.0 at 0.0% tool-call error rate versus double-digit rates for GPT-5.6 variants.

Mid-roll ad pitching Zapier as the pipe that feeds emails and support requests into a fast, cheap model like Jev inside automated workflows.

A simulated town built in Astra/Codex has Jev-powered characters react to a broadcast prompt (a bakery fire sale, then a poisonous-snake warning) almost instantly.

A chopstick-sorting demo has Jev decide, one piece at a time, which of five color buckets each of 150,000 Skittles belongs in, even at maximum speed.

Berman states plainly that Jev is not for chat, code, or interactive sessions, then introduces a third-party chess experiment as the real stress test of its limits.

Jev V13 beats Claude Fable 5.1 only because Fable ran out of time after 29 moves of being outplayed; Jev V13 is then cleanly checkmated by GPT-6 Astra in 18 moves.

Riley Brown uses Jev as a model router, Kitsy ships an ad/slot blocker called Unclutter, Justin Schroeder rebuilds Tesla FSD decision-making in under an hour, and a teammate has Jev play Melee in real time.
A model can be radically faster and cheaper than every chat LLM on the market and still lose outright the moment a task requires actual reasoning instead of narrow decisions.
“That is not sped up. That is actually real time.”
“Their motto is we're building prod, not God, a direct shot at Anthropic.”
“Astra didn't bother winning on material, it mated Jev in 18 moves.”
See every word as it's spoken — crank it to 2× and still catch all of it. The same dual-channel trick behind Amazon's Kindle + Audible.
A ChatGPT co-inventor just shipped a model that plays Doom, sorts Skittles, and drives a simulated Tesla in real time, for free. Then it got checkmated in 18 moves.
TypeSafe AI's alternative to RLHF, which the creator argues trains a model for calibrated decision output rather than human-pleasing chat, cutting hallucination for narrow-scope tasks.
“Go check it out. Huge fan. Click the link down below to let them know I sent you.”
Standard mid-roll sponsor read for Zapier, positioned as the pipe that connects real workflows to a fast/cheap model like Jev, framed as complementary rather than competing content.
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A tour of TypeSafe AI's new decision-making model, Jev, and the eight things people already built with it in its first week: email sorting, ad blocking, instant video clipping, and more.
September 24thA 'dot' release plays out like a full generational leap: two five-to-seven-day unsupervised coding runs, a sponsor benchmark, and a live pricing and capability standoff against a rawer, higher-ceiling rival model.
July 9thA hands-on run through 3D builds, image counting, clip-finding and a local Excel clone, ending on speed and price charts.
October 28thThe mystery model that took over OpenRouter turns out to be a Chinese open-weights release that nearly matches frontier intelligence for a few cents a task.
August 29thA 16-minute walkthrough of 7 copy-paste AI coding agent loops — each one runs autonomously until a defined goal is met.
June 19thA 27-minute systems playbook for turning AI coding tools into a self-managing development flywheel.
June 18th