Open source browser agent uses Jev for click decisions, finds a flight in 7 seconds
Each step turns the DOM state into a typed multiple-choice question that Jev classifies into an action, calling an LLM only for free-text input, at $0.0039 per task.
A tiny open source browser agent using Jev instead of an LLM for every click. Found a flight search in 7 SECONDS. Total cost: $0.0039. Here's why that's not a typo. A normal browser agent asks a chat model "what should I click" on every single step. That's a full generation call, just to pick a button. Mine doesn't. The DOM state at each step becomes the input. Jev gets the available actions as a typed choice question. It picks the action, not by generating text, by classifying against what's actually on the page. The only place a language model still runs is typing free text into a field, an actual search query, a name, an address. That's generation. Everything else is a decision, and decisions don't need a chat model anymore. New action space every step. DOM state space in, typed choice out. Small LLM fallback only where typing is genuinely unbounded. (video below is real time, not sped up) It's open source. Try it yourself, link below. Follow @cyrilXBT if you're building agents and still routing every click through a full LLM call, there's a cheaper way to do most of it. https://x.com/gregpr07/status/2100411066966749359/video/1
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