Dia puts an AI assistant at the center of web browsing. The address bar accepts both web addresses and questions, so you can search, ask about the page you are viewing, or have the assistant work across several open tabs, such as comparing products or summarizing a set of articles. It can draft writing in context and pull from what you have open.
The browser keeps familiar elements such as tabs and extensions, but adds features that use browsing history and open pages as context, with options for custom skills that package repeated prompts. It focuses on helping with everyday tasks like research, email drafts, and shopping comparisons.
The Browser Company built Arc and then shifted its focus to Dia, and Atlassian agreed to acquire the company. Dia is free to use with limits and a paid plan for heavier use. Because the assistant sees your browsing, privacy settings deserve a look. Alternatives include Chrome with Gemini, Microsoft Edge with Copilot, Perplexity’s Comet, and Brave with Leo. Dia suits people who want AI built into the browser.