PhiPhi
All release notes

Phi 1.4.0

Version 1.4.0Build 585

Phi Browser v1.4.0 is another serious release, because apparently we are still insisting on making the browser more capable instead of simply adding a glowing textbox and calling it the future like civilisation has completely run out of shame.

This one brings Tab Groups to Phi. You may have seen this sort of thing around the neighbourhood already, from our friends just down the street who also enjoy having more than seven tabs before their second oat milk latte. The idea is simple: collect related tabs together, keep different bits of work separate, and collapse the mess when your browser starts looking like a SF SoMa coworking desk after demo day.

We also added Split View, another one of those features that feels obvious the moment you use it. Put two pages side by side, compare things properly, fill in a form while reading from a data source, or pretend you are operating with the calm precision of someone who has their life together and definitely did not check Slack during dinner. It is especially useful when the web refuses to behave like a single neat page, which is to say, most of the time.

Those also matter for Phi Agent. When your assistant is doing agentic work, it often needs to open multiple pages, compare sources, inspect results, and move between tabs like a tiny overworked intern with too many dashboards and not enough equity. Now those tabs can be grouped together, so the work has a clearer boundary, the browser stays less chaotic, and you can see what belongs to which task without needing a Notion workspace, a whiteboard, and three people saying "let's circle back."

And because this is Phi, these browser power-ups are not just decorative storage for your tab-based life choices. You can now chat with an entire Tab Group, or with the two pages sitting in Split View. Phi can understand the working set, not just the current page: the research cluster, the comparison pair, the reference on one side and the form on the other. Ask about the task, not just the tab.

Memory has also been improved. Display and management are clearer, performance has more oomph, and the whole thing should feel less like rummaging through a drawer full of mystery cables from old MacBooks. Your browser should remember useful things, not develop the personality of a forgetful goldfish trying to pitch a productivity app.

AI conversation management gets a proper upgrade too, with support for conversation categories. Chat streaming, formatting, and artefact display are also better, because watching useful output arrive in ugly little chunks is apparently one of the tiny punishments modern software felt entitled to invent.

Phi Agent gets stronger in this release as well. Skills execution and creation have been improved, and your agentic assistant can now create skills on its own. Mildly unsettling? Naturally. Useful? Very. The goal is fewer repeated instructions, more reusable capability, and less babysitting of the machine that keeps insisting it is here to help.

There are also stability improvements and bug fixes scattered throughout the release. We would list every single one, but nobody wants that, not even the bug fixes. Some things are better left quietly repaired, like flaky Wi-Fi, calendar hygiene, and whatever happened to your inbox.

As always, thank you for the feedback, the testing, the patience, and for sticking around with us while Phi keeps turning into the browser we wanted badly enough to build.