Comet vs Atlas Browser (2025): In-Depth AI Browser Comparison | Perplexity AI vs OpenAI
AI Summary
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AI is transforming web browsers, shifting the focus from speed battles like Chrome vs. Edge to intelligent browsing. In 2025, two strong contenders have entered the scene — Comet Browser by Perplexity AI and Atlas Browser by OpenAI.
Both come with built-in AI assistants that make browsing smarter and more personalized. Now the big question is — which one will rule the new AI browser era?
🚀 What is Comet Browser?
Comet Browser is an AI-driven web browser developed by Perplexity AI, the same company behind the popular AI search engine. It was launched in July 2025 as a productivity-focused, agentic browser that can summarize, answer, and act on web content directly.
🔧 Key Features of Comet Browser
- 🧠 AI Summarizer — Instantly summarizes lengthy articles or research papers.
- ⚡ Fast & Lightweight — Built on the Chromium engine for high performance.
- 🔍 Perplexity Search Integration — Uses Perplexity’s AI search instead of Google.
- 🎙️ Voice Commands — Enables hands-free browsing for multitaskers.
- 🔒 Privacy Protection — Built-in tracker and ad-blocking capabilities.
🪶 What is Atlas Browser?
ChatGPT Atlas Browser is OpenAI’s official browser, released in October 2025. Unlike traditional browsers, Atlas Browser uses the ChatGPT engine as its central intelligence — it can summarize pages, find context, and even execute small browsing tasks automatically.
🔧 Key Features of Atlas Browser
- 🤖 Built-in ChatGPT Assistant — Always available in the sidebar for live queries.
- 🧩 Agent Mode — Lets AI perform actions like filling forms or reading PDFs.
- 🌍 Cross-App Integration — Connects with OpenAI services like ChatGPT Pro and Whisper.
- 💻 Privacy Layer AI — Sandboxes AI actions to prevent data leakage.
⚔️ Comet vs Atlas: Head-to-Head Comparison
| Feature | Comet Browser (Perplexity AI) | Atlas Browser (OpenAI) |
|---|---|---|
| Main Focus | AI productivity & research | AI-first browsing experience |
| AI Integration | Perplexity Assistant | ChatGPT Agent Mode |
| Ad & Tracker Blocking | Built-in | Sandboxed AI Privacy |
| Default Search Engine | Perplexity AI Search | ChatGPT-powered search |
| Extensions Support | Chromium Extensions | Chromium Extensions |
| VPN or Privacy Tools | Basic protection | Advanced sandboxing |
| UI Design | Modern and intuitive | Clean and adaptive |
| Platform Availability | Windows, Mac, Linux | macOS (others coming) |
| Performance on Low Devices | Moderate | High (optimized Chromium) |
| Business Model | Freemium (Comet Plus) | Integrated with ChatGPT plans |
🔍 Parent Company Insights
🧩 Perplexity AI — The Minds Behind Comet
- Founded in 2022, Perplexity AI specializes in AI search technology.
- Goal: Create an “answer engine” that replaces traditional search with contextual AI responses.
- Comet is a strategic extension of its ecosystem — an AI assistant embedded in the browser.
- Revenue Model: Freemium + premium subscription (Comet Plus).
🔹 OpenAI — The Force Behind Atlas
- Founded in 2015, OpenAI is the creator of ChatGPT, DALL·E, and GPT-5.
- Atlas Browser is part of OpenAI’s strategy to make AI assistants native to daily tools.
- Revenue Model: Subscription through ChatGPT Plus and enterprise integration.
⚠️ Security & Privacy Analysis
- Comet Browser Concerns: Independent security audits found risks of prompt injection and phishing via AI extensions. (Tom’s Hardware)
- Atlas Browser Risks: OpenAI has acknowledged AI agent vulnerabilities and is testing sandboxed isolation to limit malicious scripts. (The Hacker News)
💡 Strengths & Weaknesses
✅ Comet Browser Pros
- Free for all users as of October 2025.
- Real-time AI summaries save reading time.
- Good for students and researchers.
❌ Comet Browser Cons
- Limited mobile support for now.
- Occasional AI security flaws.
✅ Atlas Browser Pros
- Deep integration with ChatGPT ecosystem.
- Excellent design and AI task automation.
- Smart contextual understanding of pages.
❌ Atlas Browser Cons
- Still in beta on most platforms.
- High CPU usage with multiple AI tabs.
🧭 Which Browser Should You Choose?
| User Type / Need | Recommended Browser |
|---|---|
| If you’re a student | Comet Browser |
| If you’re a casual user | Atlas Browser |
| If you use the browser for research or content creation | Comet Browser |
| If you’re a professional or developer | Atlas Browser |
| If privacy and security matter most | Atlas Browser |
| If you prefer voice interaction and a modern interface | Comet Browser |
🧩 Bonus Info & Future Outlook
- Comet Study Mode: A student-friendly mode offering free AI credits for research. (Perplexity for Students)
- Atlas Integration Roadmap: Will connect with ChatGPT voice mode and Whisper for real-time voice commands. (OpenAI Blog)
- The rise of agentic AI browsers shows that the future web is no longer just about searching — it’s about understanding and acting intelligently. (TechCrunch Analysis)
🏁 Conclusion
Both Comet Browser by Perplexity AI and Atlas Browser by OpenAI are reshaping how we interact with the internet.
- If you want a fast, AI-assisted browsing tool for daily work and study — go for Comet.
- If you prefer deep ChatGPT integration and agentic AI capabilities — Atlas is worth waiting for.
Both are powerful, innovative, and pushing the boundaries of what a browser can do in 2025.