Top AI Web Browsers Benchmark Including ChatGPT Atlas
We tested 9 AI web browsers, including Perplexity Comet, Arc Max, Microsoft Edge Copilot, and ChatGPT Atlas, across key performance metrics to determine which solutions deliver practical value for different workflows.
AI Web Browser Benchmark Results
As a result of our testing, AI browsers show significant accessibility barriers and performance gaps that limit practical adoption for most users.
- Perplexity Comet can browse websites on its own and complete complex tasks, it is free as of October 2, 2025.
- Microsoft Edge Copilot handles content well if you’re already using Microsoft’s ecosystem.
- Brave Leo works immediately without signup or payment, completing every test we threw at it.
- Arc Max has clever right-click AI features but no traditional chat interface.
- Opera Aria promises a lot but fails frequently during actual use.
- ChatGPT Atlas brings ChatGPT into your browser with agent mode for automated tasks, currently macOS only with other platforms coming soon.
- Strawberry Browser shows potential for automation but remains early-stage alpha software.
- The AI browser market currently prioritizes premium features over accessibility, with most advanced capabilities locked behind paywalls.
1. AI Response Quality Testing
Task: “Summarize AIMultiple’s main page”
Perplexity Comet: Navigated to the site independently, analyzed content, and delivered structured summaries with specific examples.
Microsoft Edge Copilot: Correctly identified key sections AI benchmarks, LLM calculators, enterprise software insights. Solid understanding of business content.
ChatGPT Atlas: Analyzed the page through its sidebar, providing summaries with context from previous browsing history when browser memories are enabled. Could answer follow-up questions about specific sections.
Brave Leo: Accurately covered enterprise software insights, AI benchmarks, calculators, and the site’s transparency focus. Well-structured response.
Arc Max: Cannot perform this test due to lack of standalone chat interface. AI functionality is limited to context-specific right-click actions only, making direct webpage summarization impossible through conversational queries.
Opera Aria: Failed to summarize the current page content. Instead of analyzing the actual webpage, the system provided LLM-based suggestions and generic responses, indicating issues with page context functionality.
Sigma AI: Unable to access external websites directly. The browser explicitly states it cannot visit URLs and requires manual text input to provide summaries, severely limiting web summarization capabilities.
Strawberry Browser: Initial demonstrations suggest strong autonomous research capabilities, though comprehensive evaluation remains restricted.
Task: Long Article Analysis
Analyze article: Agentic AI for Cybersecurity: Real life Use Cases & Examples
Perplexity Comet: Delivered structured analysis covering SecOps and AppSec use cases, cited specific examples (University of Kansas Health System, APi Group), broke down benefits and challenges.
Microsoft Edge Copilot: Organized findings into clear sections—SecOps automation, AppSec uses, implementation challenges.
Brave Leo: Covered autonomous AI operations, SecOps/AppSec applications, automation benefits, challenges. Strong grasp of technical concepts, suggested follow-up questions.
ChatGPT Atlas: Analyzed the article with context awareness, breaking down technical concepts and offering to compare with similar articles from browser memory.
Arc Max: Provided detailed analysis across multiple attempts but was repetitive. Captured key concepts like autonomous decision-making, real-time monitoring, SOC automation, though less concise than competitors.
Opera Aria: Context functionality broken. Defaulted to generic responses instead of analyzing the actual article.
2. Feature Accessibility Analysis
- Perplexity Comet: Previously available only to Perplexity Max subscribers at $200/month, the company removed the waitlist and made Comet accessible to all users at no cost.
- Microsoft Edge Copilot: Available through Edge browser installation, enhanced functionality requires Microsoft 365 integration.
- ChatGPT Atlas: Free for basic features. Agent mode requires a ChatGPT Plus ($20/month) or Pro ($200/month) subscription. Currently, macOS only.
- Brave Leo: Provides comprehensive functionality immediately without subscription requirements.
- Arc Max: Offers unrestricted access but restricts interactions to contextual features.
- Opera Aria: Available without payment.
- Sigma AI: Provides a functional chat interface but lacks essential website accessibility capabilities.
3. Web Content Processing Capabilities
- Perplexity Comet navigates websites autonomously and completes tasks across multiple applications, but requires extensive data access.
- Microsoft Edge Copilot analyzed our cybersecurity article effectively, organizing content into structured sections with specific examples.
- Brave Leo consistently summarized webpages and analyzed technical articles across all tests, providing relevant follow-up questions without any signup.
- ChatGPT Atlas processes page content automatically through its sidebar, maintains context across tabs, and can perform automated tasks in agent mode like booking reservations or filling forms.
- Arc Max offers right-click AI features that work well for quick tasks.
- Sigma AI provides a capable chat, but can’t access external websites.
- Strawberry Browser demonstrates promising automation for multi-site research.
4. Privacy and Access Trade-offs
- Microsoft Edge Copilot integrates with Microsoft services, provides clear data handling policies for cloud processing.
- Brave Leo maintains privacy by storing conversations locally and processing requests without collecting personal data.
- ChatGPT Atlas offers optional browser memories that track visited sites to personalize responses. You control what gets saved and can browse in incognito mode. By default, browsing content isn’t used for training unless you opt in.
- Arc Max implements transparent data sharing with AI partners using zero retention policies for user interactions.
- Opera Aria adheres to GDPR standards but frequently fails to implement privacy features correctly.
- Sigma AI encrypts conversations end-to-end but lacks website access for practical browsing.
- Strawberry Browser emphasizes local storage with user-controlled API access and temporary cloud processing.
Testing Methodology
Products tested
- Perplexity Comet (December/2024)
- Arc Max (January/2025)
- Microsoft Edge Copilot (November/2024)
- Brave Leo (October/2024)
- Opera Aria (September/2024)
- Sigma AI (August/2024)
- Strawberry Browser (January/2025)
- ChatGPT Atlas (October/2025)
Test Categories and Objectives
Our evaluation utilized three distinct testing scenarios designed to assess core AI browser capabilities:
Webpage Summarization: Basic content extraction, complex multi-section document analysis, technical article processing.
- Interactive Features: Chat responsiveness, context-aware assistance, navigation accuracy.
- Real-world Usage: Cross-tab functionality, privacy protection, integration with existing workflows, accessibility without premium requirements.
- Interactive Feature Testing Purpose: Assess user interface functionality
- Chat interface responsiveness
- Context-aware assistance capabilities
- Navigation and task completion accuracy Test focus: AI’s ability to provide practical browsing assistance through intuitive interactions.
Real-world Usage Scenarios Purpose: Test practical application performance
- Cross-tab functionality and context retention
- Privacy protection during AI interactions
- Integration with existing browser workflows
- Accessibility without premium requirements Test focus: AI’s capability to enhance daily browsing activities while maintaining user control and privacy.
The best AI web browsers of 2025
Top AI Browsers Compared
AI Agents Browsing vs Smart Assistance
The AI browsers we tested fall into two camps:
- Smart helpers: These add AI features like chat and summarization, but you still do the browsing (Arc Max, Brave Leo, Microsoft Edge Copilot, ChatGPT Atlas)
- AI agents browsing: These AI agents can browse and work on their own, making decisions without constant guidance (Perplexity Comet, Strawberry Browser)
Whether you need agentic browsing capabilities or smart assistance depends on what you want the AI to do for you.
Feature Comparison Matrix
1. ChatGPT Atlas
ChatGPT Atlas launched October 21, 2025, for macOS, with Windows, iOS, and Android versions coming soon. Free users get basic features; agent mode requires ChatGPT Plus or Pro subscription.
Core Features
- Ask ChatGPT Button: The top-right button on every webpage opens the ChatGPT sidebar. It can summarize, explain, translate, or analyze text, images, and tables on the page, no copying or screenshots required.
- Multimodal Support: Atlas can interpret screenshots, diagrams, and even PDF previews inside the browser.
- Automatic Context Awareness: ChatGPT Atlas understands what’s on your screen, from articles to dashboards, and tailors responses using that context. You can toggle “Context View” to limit or expand what it can see.
- Browser Memories: ChatGPT Atlas remembers relevant details from websites you visit (e.g., topics, preferences, or previous actions) to provide better answers later.
Agent Mode (Plus/Pro Only)
- Autonomous Actions: ChatGPT navigates websites, fills forms, books reservations, and adds items to shopping carts, all with your permission.
- Multi-step Tasks: Complete complex workflows like researching meal plans, creating ingredient lists, and adding groceries to delivery carts.
- Always in Control: ChatGPT asks before important actions. Pause, interrupt, or take over at any time.
- Safety Limits: Agent Mode cannot run code, download files, install extensions, access other apps, read passwords, or use autofill data.
Privacy & Data
- Optional Memories: Browser memories are opt-in. Turn them off anytime.
- Incognito Mode: Browse signed out with no chat or memory saved to your account.
- Training Controls: By default, browsing content isn’t used for training. You can opt in via data controls settings.
- Local vs Cloud: Chat history stored according to your ChatGPT account settings.
Integration
- Cross-Platform: Currently macOS only. Windows, iOS, Android coming soon.
- Native Integration: Built into browser, not an extension.
2. Perplexity Comet – AI Browser
Comet demonstrates true AI agents browsing it navigates sites, analyzes content, and completes tasks independently without waiting for step-by-step instructions.
Comet Assistant (AI Agents)
- Cross-tab Context: Maintains conversation context across different tabs and websites
- Web Actions: Can book restaurants, make purchases, and schedule meetings autonomously
- Screen Awareness: AI can see what you’re looking at without needing screenshots or copy-paste
Search Integration
- Perplexity AI Search: Pre-installed as default search engine
- AI-generated summaries of search results with source citations
- Sidebar Integration: Perplexity search panel accessible on all websites
- Contextual Queries: Can ask questions about current page content
3. Arc Max
AI Assistant Capabilities
- Ask on Page: Use Command-F/Control-F to ask questions about webpage content and get AI answers
- 5-Second Previews: Hover and press Shift over links to generate webpage summaries instantly (macOS only)
Unique Interaction Model
- No Chat Interface: AI functionality limited to context-specific right-click actions
- 5-Second Previews: Hover + Shift over links for instant webpage summaries (macOS only)
- Command-F AI: Use search function to ask questions about webpage content
Browser Automation & Organization
- Tidy Tab Titles: Automatically rename pinned tabs with tidier, shorter titles
- Tidy Downloads: Smart file renaming for downloads based on content and context
- Tidy Tabs: Auto-organize Today Tabs when you have more than six tabs
- Data Sharing Transparency: Max features require sending data to AI partners with clear disclosure
- Zero Data Retention: Browse for Me feature uses OpenAI’s API with zero data retention (ZDR)
- Context-Aware Processing: AI features work within specific webpage contexts
- Selective Activation: Users can activate entire bundle or choose specific Max features
- Native Browser Integration: Built into Arc sidebar and command interface
- Cross-Platform: macOS and Windows support (some features macOS-only)
4. Microsoft Edge Copilot
Copilot Integration
- Native AI Assistant: Built-in Copilot sidebar in Edge browser
- Voice Commands: Voice-activated AI interactions
- Page Analysis: Can analyze current webpage content and provide insights
- Content Generation: Compose emails, documents, and summaries within the browser
Microsoft Ecosystem Integration
- Office 365 Connectivity: Direct integration with Word, Excel, PowerPoint, Outlook
- Microsoft Graph Access: Can access calendar, emails, documents across Microsoft services
- Teams Integration: Meeting scheduling and collaboration features
- OneDrive Integration: Document access and sharing capabilities
Productivity Features
- Shopping Assistant: Price tracking, coupon finding, product comparisons
- Travel Planning: Itinerary creation, booking assistance
- Reading Mode: Enhanced with AI summarization
Search & Browse
- Bing Chat Integration: AI-powered search results with a conversation interface
- Web Compose: Generate content directly in web forms
- Page Summarization: Instant webpage and PDF summarization
- Translation: Real-time webpage translation
5. Brave Leo
AI Assistant Capabilities
- Coding Assistance: Provide code suggestions and programming help
- Voice Input: Voice-to-text queries available on iOS and Android
- Real-time Search Integration: Incorporates live Brave Search results for current information
Privacy-First Design
- No Account Required: Use Leo without signup or login for free version
- Brave-Hosted Models: All models hosted through Brave’s secure infrastructure
- Local Chat History: Conversations stored locally on device, not on servers
- No Data Retention: Responses discarded after generation, not used for training
- Anonymous Usage: Reverse proxy ensures requests cannot be linked to users
- No IP Logging: No server-side records of Leo usage retained
- Multiple LLMs: Mixtral 8x7B, Claude Instant (Anthropic), Llama 2 13B (Meta)
- Bring Your Own Model (BYOM): Connect local models via Ollama or third-party APIs like GPT-4, Grok
- Model Choice Control: Users can switch between available models at any time
- Automatic Mode: System determines best model for current context
- Data Handling Transparency: Clear policies on local vs cloud processing per model type
- Browser Integration: Built into Brave sidebar, address bar, and full-page mode at brave://leo-ai
- Cross-Platform: Available on Windows, macOS, Linux, Android, iOS
- Page Context Awareness: Can analyze current webpage content, PDFs, YouTube videos seamlessly
- Multi-Tab Context: Advanced feature for working across multiple browser tabs
- Right-click Integration: Contextual menu options for quick access to Leo capabilities
- Tab Focus Mode: Requires explicit opt-in for enhanced tab-specific processing
6. Opera Aria
AI Assistant Capabilities
- 150+ Local Models: Largest selection of local LLM variants from 50 model families
- Built-in Model Management: Download and delete local models directly in browser
- Local Storage: 2-10 GB storage per local model variant
- Supported Models: Llama, Phi-2, Gemma, Vicuna, Mixtral and others
- Image Generation: Text-to-image creation using Google’s Imagen technology
- Image Analysis: Upload up to 3 images with OCR and visual understanding
Integration & Access
- Browser Integration: Built into Opera sidebar and address bar
- Cross-Platform: macOS, Windows, Linux, Android, iOS support
- Page Context Awareness: Can analyze current webpage content
- Command Line: Quick access via Ctrl+/ or Cmd+/
7. Sigma AI
AI Assistant Capabilities
- AI Chat: Built-in AI Chat available for free with multiple conversation modes
- Image Generation: AI Image Generator for multimedia content creation
- Compose Feature: Sigma Compose for content creation
- SEO Content: SEO-friendly content creation for blogs and marketing
Model Selection & Flexibility
- Multiple AI Models: GPT-5.1, GPT-O3, Gemini 2.5 Flash, Gemini 2.5 Pro
- Multimedia Generation: Generate pictures, videos, music and other multimedia content
- Model Variety: Access to latest OpenAI and Google AI models
Integration & Access
- Built-in Extensions: Pre-installed SigmaGPT extension ready to use
- Cross-Platform: Windows, macOS, Linux, Android, iOS support
- Dual Search Mode: Choose between traditional search or interactive AI conversations
- Crypto Integration: Built-in secure crypto wallet
8.Dia Browser
AI Assistant Capabilities
- AI-First Architecture: Built from the ground up as an AI-native browsing experience rather than an AI-enhanced traditional browser
- Conversational Interface: Full AI chat interface for natural language web interaction
- Intelligent Navigation: AI understands and navigates web content autonomously based on user intent
- Context-Aware Assistance: Deep understanding of browsing context across sessions and workflows
- Advanced Task Automation: AI performs complex multi-step web tasks without manual intervention
- Content Synthesis: Combines information from multiple sources into unified responses
Integration & Features
- Arc Ecosystem: Part of The Browser Company’s broader AI browsing strategy
- Advanced Context Understanding: Deeper AI integration than Arc Max’s contextual features
- Task-Oriented Design: Optimized for completing complex web-based workflows
- Cross-Session Memory: AI remembers and builds upon previous browsing sessions
- Collaborative AI: AI acts as an active browsing partner rather than a passive assistant
9. Strawberry Browser
AI Assistant Capabilities
- AI Companions: Autonomous AI assistants that work across websites
- Screen Recording Learning: AI learns by observing user actions
- Cross-website automation: Works behind login pages and across multiple sites
- Approval-based actions: Always ask permission before executing tasks
Advanced Features:
- Multi-site research: Gathers information from hundreds of websites simultaneously
- Data organization: Compiles research into spreadsheets automatically
- Content generation: Learns the user’s writing style and voice
- Form automation: Handles data entry and repetitive tasks
Positioning:
- $30/month after free trial (mid-range pricing)
- Alpha/Beta status – still in early development
- Focus on workflow automation and task execution
Security Risks in AI Agents’ Browsers
Security researchers at Brave discovered a significant security flaw in Perplexity Comet’s implementation that allows attackers to manipulate AI actions through malicious web content1 .
Attack mechanism:
- Attackers embed hidden instructions in web content (invisible text, HTML comments, social media posts)
- Users request innocent AI assistance like “summarize this page”
- AI processes malicious instructions without distinguishing them from legitimate content
- AI executes unauthorized actions with full user privileges
High Risk – Advanced Agentic Browsers:
- Perplexity Comet: Documented vulnerabilities with partial mitigation
- Strawberry Browser: Early development with extensive autonomous capabilities
Medium Risk – Limited Agentic Features:
- Microsoft Edge Copilot, Arc Max: Reduced attack surface due to limited automation
Lower Risk – Assistant-Only Browsers:
- Brave Leo, Opera Aria, Sigma AI: Focus on content analysis rather than autonomous actions
Security Vulnerabilities in AI Browsers
Recent research by Brave revealed critical vulnerabilities affecting multiple AI browsers, particularly those with autonomous capabilities. These attacks exploit how Brave’s AI browsers process visual content and navigate the web, enabling malicious actors to manipulate browser behavior via hidden commands.
Perplexity Comet Screenshot Attacks
Comet’s screenshot feature contains a vulnerability that allows attackers to embed nearly invisible instructions within web images using faint text colors that humans cannot easily detect. Brave The attack process works as follows:
Attack Mechanism:
- Attackers place hidden commands in web content using subtle color combinations (light blue text on yellow backgrounds)
- Users capture screenshots of these pages without noticing the hidden text
- The browser’s OCR system extracts this imperceptible text and processes it as legitimate commands rather than untrusted content Brave
- These injected commands can then access browser tools and user accounts
Shared Features Across AI Browsers
Core AI Capabilities
- Content Generation: All browsers offer text creation, writing assistance, and document generation
- Webpage Summarization: Universal ability to summarize articles, pages, and web content
- Translation Services: Multi-language translation capabilities across all platforms
- Question Answering: Conversational AI for general queries and information requests
- Content Analysis: Ability to analyze and extract insights from webpage content
Common Privacy Features
- Data Handling Policies: All browsers have stated privacy policies
- Optional Premium Tiers: Enhanced features available with subscriptions/accounts
Standard Integration
- Cross-Platform Support: Most browsers support Windows, macOS, Linux, Android, iOS
- Browser-Native Integration: AI features built directly into the browser interface
FAQ
External Links
- Android Authority. (2025). “Comet browser is quietly revolutionizing how I watch YouTube.”
- Arc Browser. (2025). “Arc Max – Browse the web with AI.”
- Perplexity AI. (2025). “Introducing Comet: Browse at the speed of thought.“
Reference Links
Cem's work has been cited by leading global publications including Business Insider, Forbes, Washington Post, global firms like Deloitte, HPE and NGOs like World Economic Forum and supranational organizations like European Commission. You can see more reputable companies and resources that referenced AIMultiple.
Throughout his career, Cem served as a tech consultant, tech buyer and tech entrepreneur. He advised enterprises on their technology decisions at McKinsey & Company and Altman Solon for more than a decade. He also published a McKinsey report on digitalization.
He led technology strategy and procurement of a telco while reporting to the CEO. He has also led commercial growth of deep tech company Hypatos that reached a 7 digit annual recurring revenue and a 9 digit valuation from 0 within 2 years. Cem's work in Hypatos was covered by leading technology publications like TechCrunch and Business Insider.
Cem regularly speaks at international technology conferences. He graduated from Bogazici University as a computer engineer and holds an MBA from Columbia Business School.
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