Analyzing Jev, a new AI model

A new AI model called Jev launched last week and went viral. It's not an LLM. It doesn't generate text or pictures, but could be very useful for a number of use cases. The creators call it “the first System One model”, tout its performance (193x faster, 444x cheaper) and promise it can't hallucinate. So, what is it? How it (probably) works Behind the impressive marketing is a very interesting model. Jev is a close relative of LLMs like GPT, Claude, or DeepSeek, but is actually more similar to the BERT series of models, which are used for classification, not generation. (If you've ever wondered why someone calls out a difference between “AI” and “GenAI”, that's the distinction they mean). TypeSafe (the creators of Jev) haven't actually published any papers on the system, but here's a reasonable guess and simplification, just to give you a sense of how it works. Imagine going back to 2022. GPT-3, the best LLM at the time, can autocomplete text (you give it some text as an input and it…