# Testing the Mainstream AI Browsers: A Complete Review
Over the past week, I tested **all major AI browsers** — OpenAI’s **Atlas**, Perplexity’s **Comet**, Browser Company’s **Dia**, and **Edge Copilot**.
Each product shines in different ways but also reveals shortcomings. Together, they propose **very different visions** for the browser of the future.
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## Two Main Camps: Incremental vs. Radical
### **Incremental Evolution**
- **Representative**: Chrome, Edge
- AI **added** into existing browser structures.
- Google, with its massive market share, keeps the familiar UX, using AI as a supplementary tool.
- **Example**: Edge Copilot positions its assistant button in the upper right corner.
- Opens in a sidebar.
- Stronger focus on **voice interaction**.
- Chinese accent inaccuracies and limited usage scenarios observed.
### **Radical Reinvention**
- **Representative**: ChatGPT Atlas
- Entire browsing experience **centered on AI conversations**.
- **In these products, the browser *is* the AI**.
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## AI Browsers Moving Beyond Q&A
Beyond answering “what” and “why,” AI browsers now try to solve **“what to do next”**.
### **Agent Modes** — Atlas and Comet
These modes **execute commands** directly, like opening sites, navigating pages, or performing tasks.
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## Overall Recommendations
| Browser | Strengths | Weaknesses | Best For |
| --- | --- | --- | --- |
| **ChatGPT Atlas** | Strong execution power, operates webpages, automates tasks | Security vulnerabilities | ChatGPT paying customers, real work execution |
| **Perplexity Comet** | Excellent info aggregation | Slow, mechanical, weak Agents | Research, reports |
| **Dia** | Fastest speed, minimalist UI | Summaries lack detail, no real actions | Speed-focused users ($20/mo) |
| **Edge Copilot** | Free, clear logical summaries | Templated outputs, no task execution | Everyday casual users |
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## Productivity Testing: Which AI Browser Delivers?
We conducted real-world tests to compare how they **summarize content, plan trips, and complete tasks**.
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### 1. Summarizing Articles
- **Dia**: **Fastest**, but shallow summaries.
- **Comet**: Thorough, covers most key points.
- **Edge Copilot**: Structured like a professional editor — logical layers, templated style.
- **Atlas**: Feels human-like, adds values/perspectives.
**Summary**:
- Dia → Speed
- Comet → Completeness
- Edge → Stability
- Atlas → Depth
Atlas’s own **GPT model** gives it an edge in depth and fluency.
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### 2. Summarizing Videos
**Requirement**: Subtitles must be available.
- **Dia** & **Atlas**: Quick results + time-axis breakdown.
- Dia wins on speed.
- **Edge Copilot**: Captures stance & tone; expression is clearer.
- **Comet**: Mediocre overviews only.
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### 3. Planning Trips
Test prompt:
> *"I want to spend the weekend in Guangzhou, traveling from Shanghai. Help me plan the route, hotels, and budget."*
- **Atlas**: Most effort saved, integrates multi-platform data, produces detailed plan.
- **Comet** & **Edge Copilot**: Functional itineraries; Comet slightly more practical.
- **Dia**: Convenient via Google Search but sources vague.
**Tip**: AI guides are best as references — check real user posts for reliable travel info.
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## Execution Power: The “Agent” Factor
We tested:
> *"Purchase an iPhone 17 Pro Max on Apple’s official website."*
- **Dia**: Recognizes intent, step-by-step guide; doesn’t place orders.
- **Edge Copilot**: Fast parsing, accurate page descriptions; limited to Q&A.
- **Comet**: Can click, type, navigate, simulate manual purchase — slower/more mechanical.
- **Atlas**: Full simulation + memory, automation scripts, and multi-step execution.
**Cross-platform price comparison**:
- **Atlas** clearly outperforms **Comet** for complex tasks.
- Comet → Info aggregation + single-step tasks.
- Atlas → Full “execution-oriented browser Agent.”
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## Should You Switch? Consider the Vision
**Chrome extensions** are mature — fine for simple AI tasks.
But complex execution power requires deeper integration.
**Future Internet for AI Agents**:
- Browsers may evolve from “visual interfaces for humans” to **execution layers for AI**.
- Tasks given as commands; AI fetches, acts, and integrates results automatically.
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### Technical Note: OpenAI’s OWL Architecture
- **OWL (OpenAI’s Web Layer)** rebuilds browser–engine integration.
- Uses SwiftUI, AppKit, Metal.
- Benefits: Faster startup, higher concurrency, secure agent runtime.
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## Security Risks: Indirect Prompt Injection
Hidden malicious instructions can mislead AI into executing harmful actions.
### Brave Research Findings
Affected products: **Perplexity Comet**, **Fellou**, **ChatGPT Atlas**.
**Potential Impacts**:
- Alter Agent decisions
- Steal sensitive data
- Inject malware
**OpenAI Mitigation**:
- Rapid-response systems
- Red-team testing
- Unlogged mode
- Monitoring mode for sensitive site actions
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## Pricing and Best-Use Cases
| Browser | Model | Price | Notes |
| --- | --- | --- | --- |
| Atlas | Free (Agent for Plus/Pro) | Subscription for Agent Mode | Best for existing ChatGPT subscribers |
| Comet | Freemium | Limited Agent tasks | Best for research & source tracing |
| Dia | Subscription ($20/mo) | Ad-free | Best for minimalists |
| Chrome / Edge | Free | Ads/cloud-backed | Best for casual AI use |
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## Final Recommendations
- **Heavy ChatGPT users** → **Atlas**
- **Research/fact-checking** → **Comet**
- **Casual AI curiosity** → **Chrome/Edge**
- **Minimalist style lovers** → **Dia** ($20/mo; niche risk)
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## Looking Ahead: Full AI Workflow Integration
For creators/researchers, platforms like [AiToEarn官网](https://aitoearn.ai/) enable:
- **AI content generation**
- **Cross-platform publishing** (Douyin, Kwai, WeChat, Bilibili, Rednote, Facebook, Instagram, LinkedIn, Threads, YouTube, Pinterest, X)
- **Analytics & AI model ranking**
Such tools help **monetize AI creativity securely**, aligning with the “AI as browser” future.
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**Test Machine**: M2 MacBook Air
**Performance Notes**: No major differences in speed/stability among browsers.
**Basic Features Supported**: Bookmark imports, vertical tabs — standard across products.
