Dia (web browser)
Dia is a proprietary web browser built on Chromium by The Browser Company of New York. It centers around an AI assistant you can use directly in the browser to ask questions about open tabs or generate text from tab content.
The company revealed Dia in late 2024 as the next browser after Arc, with AI at the core of the browsing experience. In 2025, The Browser Company stopped adding new features to Arc and focused on Dia, while still providing updates for Arc. Dia entered beta in June 2025.
Dia is based on Chromium and places the AI assistant in the browser’s URL bar, letting you chat and search in one interface. In August 2025, a paid tier called Dia Pro launched for $20 per month, offering expanded or unlimited access to AI features. In September 2025, Atlassian announced it would acquire The Browser Company for $610 million, and the deal closed in October 2025.
In October 2025, Dia became broadly available to macOS users without an invitation, after a waitlist. The browser keeps a conventional layout but makes the AI assistant a primary way to interact. You can ask questions about open tabs and have the assistant draft content based on tab information. Dia also offers “Skills,” a set of task shortcuts created in advance or by users for workflows like summarizing, outlining, planning, writing, and coding.
Optional personalization lets the assistant use a limited amount of your browsing history as context. By October 2025, Dia was available to the general public on macOS, requiring macOS 14 or later and Apple silicon hardware.
Dia offers a free tier with basic AI features and Dia Pro for $20 per month, which provides expanded or unlimited AI capabilities.
This page was last edited on 2 February 2026, at 18:24 (CET).