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Browser Use Publishes jev-ultrafast Browser Agent With 7.073-Second Google Flights Demo

September 25, 2026 at 07:34 EDT

AI Agents
Software Dev & Coding
Open Source

Browser Use has published jev-ultrafast, an MIT-licensed Python browser agent that uses TypeSafe's Jev decision model to drive a browser through a dynamic, indexed action space. Its headline demo shows a Google Flights search from Zurich to London completing in 7.073 seconds, but the project frames that as a verified flight-search task, not an actual ticket booking.

Sep. 25, 2026 · Browser Use

A faster browser-agent loop

Jev Ultrafast turns each page into numbered controls, asks Jev for the next operation and target, and calls a small language model only when text must be typed.

7.073 s

Verified Google Flights run

25%

Lower median runtime

Jev requests in the recording

19,940

Repository stars on Sep. 25

Protocol calls collapsed

The matched comparison cut median browser protocol calls from 1,092 to 101.

1,092

Original

101

Optimized

How the loop moves

ObserveRead visible controls as numbered rows.

→

ChooseJev selects operation and target.

→

Type if neededA small LLM writes only field text.

→

ActBrowser executes and outcome is checked.

What developers like

Numbered actions, validated targets, and no free-form selectors make the browser loop easier to inspect and constrain.

What still limits it

The MVP excludes frames, canvas, uploads, nested scrolling, and the exact public flight demo now needs a future date.

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