How we built the fastest, cheapest browser agent with Jev
IronBee AI
IronBee Express demoed a browser agent built around Jev that completed a checkout in 6.7 seconds using 9 actions and $0.00054 decision cost, with no LLM in the loop for the steps. The recorded run happened on a real iPhone 15 Pro checkout and finished in 6.7 seconds (9 actions). The system shifts from LLM-based step generation to Jev’s typed-choice decisions plus tighter latency/cost controls and smarter option text, with LLM help only when Jev can’t proceed.
Why it matters
IronBee Express uses Jev as a fast classifier for bounded browser decisions, calling an LLM only for writing, recovery, or failure explanations. The team reports low run costs and strong replay performance using narrow verification questions.