Phi Browser 1.0.2: A Native macOS Browser, Reimagined Around AI

Today, we are introducing Phi Browser 1.0.2, a meaningful step forward for Phi as a browser built for a more personal and collaborative relationship between people, the web, and AI.

Phi Browser starts from a simple belief: a browser should be more than a window to the internet. It should feel native to the platform, deeply personal to the user, and capable of helping with the work that already happens in the browser every day.

With this release, we are bringing several of Phi’s core ideas into a more polished and publicly visible form: a native macOS browsing experience built on Chromium, a deeply personalised AI assistant, a local-first memory system, mobile continuity through Phi Link, and background task support powered by Phi Sentinel.

A polished macOS browser, built on Chromium

Before anything else, Phi Browser is a solid browser for macOS.

It is powered by the Chromium engine, giving users the compatibility, performance, and modern web support they expect, while presenting it through a polished interface designed specifically for macOS. Phi supports the everyday browser features people rely on, while also introducing a UI that feels more at home on the platform.

The browser includes a vertical sidebar layout familiar to many modern browser users, while maintaining the performance and compatibility of Chromium underneath. This combination is important to us: Phi is not trying to reinvent browsing by discarding what already works. It is building on a strong foundation and taking the experience further.

The macOS-side foundation of Phi Browser is also open source, and we are making that work publicly available for anyone who wants to take a closer look at how Phi is built. Visit our GitHub repositories here.

Your assistant is not "Phi AI"

Phi does not simply offer a generic AI features bolted onto a browser.

Instead, your assistant is your assistant. You name it, and that identity carries throughout the experience. I call mine Paprika. In another, it may be something entirely different. The point is that the assistant is not treated as a faceless product surface. It is designed to feel personal, consistent, and familiar across the browser.

That identity appears throughout Phi, from chat to interface touchpoints to the moments where the assistant proactively reaches out. We think this matters. If AI is going to become part of your day-to-day environment, it should feel less like a vendor-branded pop-up and more like a companion you have shaped for yourself. Miraculous concept, apparently.

A browser that gets to know you

One of the core ideas in Phi is browser memory.

Rather than treating each interaction as isolated, Phi gradually builds context from how you use the browser over time. This makes it possible for the experience to become more relevant, more personalised, and more aware of what matters to you.

A visible example of this appears in the new tab page, where your assistant greets you with a short line that reflects your recent focus and activity. It is not a random motivational slogan and not a generic "good morning" pasted over a blank search box. The goal is something subtler and more human: a small moment of recognition that feels informed by your actual browsing life.

We want Phi to feel less like software waiting for commands, and more like software that is beginning to understand your context.

Memory as a product feature, not a hidden system

Personalization in Phi is made possible by a unified memory system that sits at the centre of the experience.

This memory system helps connect conversations, patterns, preferences, and activity into a longer-term layer of context. It is what allows Phi to move beyond one-off answers and toward a more continuous relationship with the user.

Just as importantly, this system is designed with a local-first architecture. Memory data is stored locally on the user’s machine, and Phi includes tools for browsing and managing that memory directly.

In Phi, memory is not meant to be an invisible black box. It is something users can inspect, understand, and control. This release also accompanies a richer visualisation of memory inside the product, where users can explore an interactive view of the relationships and entities that make up their browser context.

For those interested in the deeper design and engineering thinking behind this system, we have published a separate article focused specifically on Phi's memory architecture, read it here.

Phi Link brings Phi to your phone

Phi Browser now extends beyond the desktop through Phi Link.

Phi Link is the bridge between Phi Browser and your mobile life, allowing you to continue or initiate conversations with your assistant from your phone using a messaging app. At launch, Phi Link supports Telegram, with more platforms planned later.

This means Phi can stay available even when you are away from your desk, as long as Phi Browser is running on your Mac. You can continue an ongoing conversation, ask your assistant about something in your day, or trigger actions and tasks remotely.

We think this is an important part of making a browser assistant genuinely useful. A browser is where much of a person’s digital life already happens. Phi Link makes that context reachable even when you are no longer sitting in front of the browser itself.

Phi Sentinel powers background intelligence

Another major part of this release is Phi Sentinel, the background helper that makes Phi's more proactive behaviour possible.

Phi Sentinel is a lightweight companion process for macOS that runs separately from the main browser application and supports scheduled, asynchronous, and event-driven AI tasks. In practical terms, it allows Phi to keep working in the background on behalf of the user.

With Sentinel, users can ask their assistant to schedule tasks, monitor webpages for changes, and take action when those changes happen. It also supports the broader shift in Phi from reactive chat toward a more capable assistant that can respond to future events and help move work along over time.

Sentinel matters because it separates these AI-driven workflows from the main browser process and gives Phi a more durable, system-level presence on macOS. It is the infrastructure behind Phi becoming more proactive, more persistent, and more useful.

A more personal future for the browser

Phi Browser 1.0.2 is not just another feature update. It represents a clearer picture of what Phi is becoming.

A polished native browser on macOS. A Chromium foundation. A personalised assistant with identity. A local-first memory system. Mobile continuity through Phi Link. Background task execution through Phi Sentinel.

Taken together, these pieces point to a different kind of browser experience, one where browsing, memory, assistance, and action are beginning to come together in a single product.

Phi Browser is available now. The team will be thrilled if you could give it a try.