jev-ultrafast vs page-agent
Browser Use's speed experiment: Jev picks the operation and the target element from an indexed action space in one request, and a small LLM writes text only when typing is needed. — versus — Alibaba's in-page GUI agent: one script tag gives any webpage its own AI agent — users drive the interface in natural language. TypeScript, tiny bundle, Chrome extension available.
Two answers to 'drive this page for the user': page-agent injects an in-page GUI agent via one script tag for site owners, jev-ultrafast drives Chrome externally over CDP for the operator.
| jev-ultrafast | page-agent | |
|---|---|---|
| Stars | 8.3k | 29k |
| Forks | 518 | 2.6k |
| Language | Python | TypeScript |
| License | MIT | MIT |
| Last activity | yesterday | today |
| Topics | web, agents | agents, web |
| Curated connections | 4 | 3 |
jev-ultrafast — the curator's take
Read this one for the architecture even if you never run it: the page becomes a numbered element table, Jev answers operation and target as speculative parallel heads in a single round trip, and a small LLM is called only for TYPE_TEXT. That is why Zurich-to-London on Google Flights lands in ~7s with no screenshots in the loop. The safety properties are the interesting part - model output never becomes selectors, coordinates, shell or JS; every target resolves to an observed DOM node and is rechecked for occlusion before input. Use it when latency is the product. Don't reach for it as a general agent: the action space is eight fixed operations, it needs a hosted TypeSafe key plus a text-model key, and browser-use proper is what you want for long, tool-rich, recoverable workflows.
page-agent — the curator's take
The inverted take on browser agents: instead of YOUR agent driving SOMEONE's site, the site ships its own — one script tag and visitors can say 'file an expense report for Tuesday's taxi' at your UI. For products with deep, form-heavy interfaces this is the cheapest 'AI feature' with real utility, and 26k stars say the demand is real. NOT for automating third-party sites (that's browser-use's job — this requires the site owner to opt in), and handing an LLM the ability to click your own UI means auditing what it can reach: same-origin power cuts both ways.