browser-use shipped jev-ultrafast one day after Jev launched, cutting browser protocol calls from 1,092 to 101.

browser-use/jev-ultrafast was created September 16 and has 782 stars. It replaces per-step action generation with two decisions per cycle (which operation, which element) served by a single speculative fan-out request over TypeSafe's Jev, and only invokes a text model when typing is actually required. The README reports a Zürich-to-London Google Flights search in 7.1 seconds end to end and a 25% wall-clock reduction over six runs. The call-count collapse from 1,092 to 101 is the mechanism, not model speed, and that's the number to design against.