LLMs vs. Jev, clearly explained!
LLMs are great, and the ceiling is one you can watch scroll past:
an LLM writes the answer one token at a time.
give it a failed deploy and four decisions, and it produces a small JSON object where every token depends on the one before it.
token nine cannot exist until token eight does, so four decisions that had nothing to do with each other just stood in a queue.
then your code parses it, validates the shape, and retries when the shape is wrong.
Jev fixes this without being a smaller or faster model: it removes the order.
one turn on that deploy has to know:
→ whether the incident is urgent
→ which team owns it
→ whether the next command is risky
→ whether the task is actually done
you declare the questions and the answer type upfront, and all four come back together, typed, with a probability on each.
three primitives cover almost every fork in an agent:
1. **Choice** picks one of up to 255 options you define, like engineering, billing or sales.
2. **Score** places the state on an ordered scale you define, like low, medium or high risk.
3. **Noul** returns the probability that a yes-or-no condition is true.
here is the sentence that resolves the whole confusion:
text is a line you have to walk. an answer space is a room you see all of at once.
↳ generation: one order you cannot change, one string at the end, a shape you hope holds
↳ evaluation: no order at all, typed answers, a probability on every option
Prompts → Agents → Loops → Graphs → Jev
the probabilities matter more than the answer.
↳ engineering at 0.91 against billing at 0.09 is a route you can automate
↳ 0.52 against 0.46 is a coin flip wearing a label, and the label alone never told you which one you got
that last one catches careful people. an LLM would have said "engineering" in a confident sentence and given you no way to know the race was that close.
thresholds live in your code, one per action, scaled to what being wrong costs.
it works when the options are known and the call depends on meaning. it is not for writing, code, arithmetic, or anything where question two needs the answer to question one.
and the one that eats whole nights: type safety prevents malformed output, not incorrect judgment.
Jev cannot return an option outside your schema, and it can still pick the wrong valid one with confidence. a schema-valid mistake refunds the wrong customer just as fast.
an LLM writes new language when the answer space is open. Jev evaluates known paths when the answer space is closed.
below i have quoted my full breakdown on Jev. it covers the three primitives, the parallel battery, the thresholds, and where it does not belong.
save this and read it below ↓
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