In my view, models like JEV will bring about enormous
Built self-play into a Pac-Man agent using the Jev API, replacing hand-coded if-statements with a dynamic classifier that picks moves from game state.
The original post, translated
In my view, models like JEV will bring about enormous changes. Current LLM models simulate the operation of System 2. For me, the implementation of JEV is one of the newest concepts to appear in the past few months.
Although it doesn't seem particularly special (just a dynamic classifier), it's surprising that we've had to wait so long for such a model. Actually, a general classifier, an intelligent "if" structure... In my previous articles, I've already explained the operating principles of this kind of model. I have access to the APIs of @typesafeai and @CompleteSkeptic, so I implemented self-learning functionality in my own "pac-man" model.
This example is a bit "playful," because the query pattern is fixed, but in many systems, such as intelligent agent systems, both the pattern and the state change over time (in the "pac-man" model, only the state changes). In more complex systems, the structure of the state and the values of the state attributes both change over time, and the same is true of the classifier's contract conditions (the number of categories and their semantics). And here, we have a System 1 model—it makes decisions.
Of course, this functionality can also be implemented on an LLM, but that would be slower, more expensive, and would require processing requests sequentially (the corresponding answers can be seen in the context). One can use response-based diffusion techniques instead of filling response templates with random data (this would be faster)—just generate test samples. However, what really matters is the concept of System 1 itself. I think its range of applications is very broad: intelligent applications, intelligent agent systems, client programs for coding—thereby reducing costs, increasing operating speed, improving the quality of solutions, and so on.
Show the original post in its source language ▾
Takie modele jak JEV (System-1) zmienią moim zdaniem bardzo dużo. Obecne modele LLM symulują System-2. Dla mnie implementacja jev to jedna z najświeższych koncepcji ostatnich miesięcy.
Niby nic szczególnego (dynamiczny klasyfikator) a dziwi, że tak długo trzeba było czekać na taki model. Uniwersalny klasyfikator, inteligentny "if". W swoich poprzednich wpisach objaśniłem jak to działa. Mam dostęp do API @typesafeai @CompleteSkeptic więc zrobiłem self-play w moim pac-man.
To "zabawkowy" przykład ponieważ schemat zapytań jest stały ale ... w wielu systemach np. agentowych schemat jak i stan zmienia się w czasie (w pac-man tylko stan się zmienia). W bardziej zaawansowanych, złożonych systemach struktura stanu, jak i wartości atrybutów stanu są zmienne w czasie, kontrakt klasyfikatora (liczba klas jak i ich semantyka) również. I tutaj mamy system-1 jev - podejmuje decyzje.
Oczywiście można to zrobić na LLM ale będzie wolniejsze, droższe, sekwencyjne (wzajemnie zależne - w kontekście widać odpowiedzi). Można wykorzystać dyfuzyję z blokiem odpowiedzi wypełnionym nie na szum a na szablon odpowiedzi (będzie szybko) - generować tylko proby. Możliwości są chodzi natomiast o samą koncepcję Systemu-1. Widzę szerokie zastosowanie - inteligentne aplikacje, systemy agentowe, w klientach do kodowania -> obniżenie kosztów, zwiększenie szybkości działania, jakości rozwiązania itd.
The post above is a machine translation from pl; the untranslated text is in the fold-out.
Engagement when collected
Numbers are a snapshot taken from X when the case was added to the library (schema v1, collected 2026-09-19); they will not match today.
Where this case fits
Filed under games & playable demos, coding & developer tools, classification & data extraction. In the pattern Jev is built for, the model answers a bounded question per step — and ordinary code acts on the answer, because the answer is already a value rather than a paragraph. Other posts in the same family are on the games & playable demos page.
Related Jev cases
jav @typesafeai - I am very impressed Awesome.
WebsitesSupport & ops
The gains aren’t free: Jev can't generate text Comparing
Dev toolsClassification
Jev was adopted faster than any other model in AI Gateway
Classification
[Breaking News] ChatGPT Co-Inventor Unveils New AI Model
Classification
Keep browsing: all 1173 Jev cases · more from @KinasRemek · builders · what Jev is
Last updated: 2026-09-22 · sources & corrections · every card links to its author's original post