
Arc AI is a web browser developed by The Browser Company that deeply integrates AI into the browsing experience to offer a new way of interacting with the web.
Key features include a distinctive vertical sidebar UI, Spaces for workspaces, and a suite of Arc Max AI capabilities such as in-page questions and intelligent information integration search.
According to current information, the Arc Max AI feature suite is currently free.
Arc AI is available for macOS and Windows desktop, plus an iOS mobile app called Arc Search.
On mobile, you can trigger AI summaries with the 'pinch' gesture. On desktop, use features like Ask on Page to ask questions directly on the page and get summaries.
The Spaces feature lets you create separate workspaces for different activities or projects, each with its own tabs and pinned pages, making it easy to organize your browsing.
Dia is a new browser The Browser Company is developing, seen as Arc's next-generation evolution focused on AI-driven interaction. Arc Browser is currently in a maintenance phase.
Publicly available information shows the browser emphasizes user safety and privacy, with a core principle of keeping user data under the user's control.
Sider AI is an intelligent assistant embedded in your browser's sidebar that brings together multiple leading AI models, including GPT, Claude, and Gemini. With a sidebar-based interface, it seamlessly fits into your workflow, offering chat, content processing, writing assistance, and file analysis to boost your productivity when browsing web pages, handling documents, and creating content.

Dia AI Browser is an AI-native smart browser deeply integrated with artificial intelligence. It enables natural language conversations with web content to help users efficiently summarize information, create content, and multitask.