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Home » A Comparison of the Leading Agentic AI Browsers in 2025: Atlas, Copilot Mode, Dia, and Comet

A Comparison of the Leading Agentic AI Browsers in 2025: Atlas, Copilot Mode, Dia, and Comet

In 2025, a new wave of AI-powered browsers is changing how we interact with the web. Four major players are leading this charge: OpenAI’s ChatGPT Atlas, Microsoft Edge with Copilot Mode, The Browser Company’s Dia, and Perplexity’s Comet. Each of these browsers offers unique features and approaches to user autonomy, memory, and privacy, catering to different user needs.

Agentic browsers go beyond just displaying web pages; they allow AI to interact with the browser’s structure, including tabs and history. This means they can read across multiple tabs, remember tasks over time, and perform actions like filling out forms or booking reservations.

ChatGPT Atlas is the most advanced of the group. Built specifically around ChatGPT, it integrates deeply with the browser, allowing users to perform complex tasks. It is currently available for macOS, with plans for Windows and mobile versions. Atlas features a powerful agent mode that can handle multi-step tasks, but it does require user consent for actions, and it has some privacy concerns due to data being sent to OpenAI’s servers.

Microsoft’s Edge with Copilot Mode offers a more measured approach. It provides AI assistance within the existing Edge framework, enabling users to summarize and compare tabs. While it enhances productivity, it remains less autonomous than Atlas, focusing on controlled actions and enterprise-friendly features.

Dia, developed by The Browser Company, is designed with a strong emphasis on privacy. It allows users to interact with their tabs through chat and offers a system for creating reusable task prompts. Dia stores data locally, which gives users more control over their information, but it does not provide the same level of automation as Atlas or Comet.

Comet from Perplexity is another high-autonomy browser. It acts as a personal assistant, capable of executing complex workflows across various tasks. However, it has faced scrutiny due to security risks, including potential vulnerabilities that could expose user data.

As users weigh their options, they should consider their specific needs. Atlas is ideal for those seeking extensive automation, while Edge suits users looking for AI support within a familiar environment. Dia appeals to those prioritizing privacy in their browsing experience, and Comet is best for users who want a highly capable assistant but are willing to manage associated risks.

In summary, the landscape of AI browsers is evolving rapidly, offering a range of functionalities that cater to different user preferences. Each option has its strengths and weaknesses, making it essential for individuals to choose based on their unique workflows and comfort levels with privacy and security.