Introducing Lev

A few weeks ago TypeSafe released Jev, and their demo of Jev playing Doom in real-time got a lot of excitement. Their argument is that chat models are great at conversation while still being awkward at doing real world tasks which often involve deciding things. Jev is a hosted classifier model which takes unstructured state as input and produces typed probabilistic decisions in a single pass. And what the Doom demo illustrates is that the model is able to do this reliably under a few hundred milliseconds. Since the responses are structured data, there is nothing that can be hallucinated, although the model can still misunderstand the question and produce a wrong classification. They call the category System One models, borrowing Kahneman's name for the fast automatic kind of thinking.Naturally, people quickly pointed out that the idea behind Jev has been around for a while, and a whole slew of open source projects have popped up implementing the idea. I got curious to see how much…

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