ChatGPT Atlas vs Comet: Which AI Browser Is Better in 2025?

The competition between ChatGPT Atlas and Comet marks a major step in the evolution of AI-powered browsing. Both browsers aim to redefine how people search, read, and work online by integrating intelligent assistants directly into the browsing experience. Released in October 2025, ChatGPT Atlas from OpenAI and Comet from Perplexity AI take very different approaches to what an “AI-first” browser should look like.

Each tool focuses on automation, summarization, and user context—but with unique strengths depending on whether your priority is deep workflow automation or flexible, research-heavy browsing.

ChatGPT Atlas vs Comet: Feature Breakdown

Launch and platform availability
ChatGPT Atlas is currently available for macOS users with broader platform support planned for Windows, iOS, and Android. It integrates directly with the ChatGPT ecosystem, letting subscribers access features based on their plan. Comet, originally launched as an invite-only product, went free for all users in October 2025, introducing a “Plus” tier for advanced tools. It supports both Windows and Mac platforms out of the box.

Core experience
Atlas places ChatGPT at the center of every task. A persistent sidebar allows users to summarize pages, compare information, and ask real-time questions. Its standout feature, called Agent Mode, can automate multi-step tasks like trip planning or product research—effectively functioning as a digital assistant that acts on your behalf. Users have control over memory and privacy, and data collection is disabled by default.

Comet emphasizes exploration and multitasking. It allows you to highlight text, ask contextual questions, and follow tangents without losing track of your main topic. Its interface is designed to simplify reading and summarizing multiple articles at once, appealing to researchers, students, and journalists who rely on quick information access across tabs.

ChatGPT Atlas vs Comet: Productivity and Performance

Atlas excels in structured workflows. For professionals already using ChatGPT for business or creative tasks, having the assistant built directly into the browser eliminates the need for switching between tabs or tools. Its automation features significantly cut down repetitive tasks and improve efficiency.

Comet, meanwhile, thrives in open-ended research scenarios. Its tab-based AI interactions and branching capabilities make it a strong choice for users who need to explore diverse sources, collect insights, or compare data without losing context. It’s built for curiosity-driven browsing rather than rigid workflows.

ChatGPT Atlas vs Comet: Privacy, Security, and Ecosystem

Atlas benefits from OpenAI’s enterprise-grade security standards. It allows users to disable memory, isolate browsing sessions, and manage what data is remembered. For organizations and professionals concerned about data safety, Atlas provides more predictable privacy controls and a corporate-level infrastructure.

Comet’s flexibility comes with trade-offs. Independent security audits in 2025 highlighted issues with prompt-injection and unintended automation actions, which could lead to privacy vulnerabilities. While Comet remains appealing for personal or academic use, enterprise users may find Atlas the more reliable option.

In terms of cost, Atlas requires a paid ChatGPT subscription for its advanced Agent Mode, while Comet’s free plan gives newcomers a taste of AI browsing without financial commitment. Comet’s Plus plan adds premium features similar to those of Atlas but at a lower entry point.

Overall Verdict: Which AI Browser Wins?

Both browsers push AI integration forward, but they cater to different audiences. Atlas is the stronger choice for users focused on productivity, automation, and privacy. Its deep integration with ChatGPT and emphasis on agent-driven tasks make it ideal for professionals and teams managing complex workflows.

Comet, however, is perfect for exploration and research. It’s lighter, faster to adapt, and free to use—an excellent entry point for students, researchers, and everyday users curious about AI-assisted browsing.

In conclusion, ChatGPT Atlas is better for structured productivity and enterprise reliability, while Comet excels at curiosity-driven discovery and lightweight research. Your best choice depends on whether you want an AI partner to work for you—or with you.

FYI (keeping you in the loop)-

Q1: What is the difference between ChatGPT Atlas and Comet?

Atlas is built by OpenAI and integrates directly with ChatGPT for automated task handling, while Comet is Perplexity AI’s research-oriented browser focused on summarization and contextual exploration.

Q2: Which browser is better for productivity?

ChatGPT Atlas is better for structured work and automation. Comet is better for quick research and browsing multiple sources at once.

Q3: Is ChatGPT Atlas free to use?

Atlas offers basic features for free but requires a ChatGPT Plus or higher subscription for Agent Mode and advanced automation tools.

Q4: How secure are AI browsers like Atlas and Comet?

Atlas emphasizes privacy with user-controlled memory and data isolation. Comet offers flexibility but has faced criticism for potential prompt-injection risks in early audits.

Q5: Which one is available on more platforms?

Comet currently supports both Windows and macOS, while Atlas is macOS-only for now with other versions in development.