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Comet by Perplexity vs Undermind

Side-by-side comparison of features, pricing, and ratings

Comet by Perplexity
Comet by Perplexity

Comet by Perplexity: AI-powered browser for advanced research and web exploration

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Undermind
Undermind

AI co-researcher for deep literature search

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Pricing
Paid
Freemium
Plans
$0/month
$20/month
$0/mo
$16/mo (billed annually)
$15/person/mo (billed annually)
Custom
Popularity
4.5k views
7.2k views
Skill Level
Intermediate
Advanced
API Available
Platforms
Web
Web
Categories
🔬 Research & Education
🔬 Research & Education
Features
AI-powered unified search with web + AI results
Interactive follow-up questions for iterative discovery
Multi-source analysis and content synthesis
Automatic citation of sources for fact-checking
Organize findings into customizable collections
Create custom AI agents for tailored research
Export data in multiple formats (PDF, CSV, etc.)
Context-aware browsing with persistent history
Collaborative workspaces for team research
AI copilot that follows user's train of thought
Built-in note-taking and annotation tools
Visual search results with card-based layout
Real-time cross-referencing across tabs
AI-powered deep literature search
Follow citation trails automatically
Ask follow-up questions to refine search
Generate custom tables from papers
Verify responses with inline citations
Gauge paper relevance quickly
Sort and filter results
Get notified on new relevant papers
Collaborate on shared projects (Team)
Brainstorm research directions
Assess novelty of ideas
Identify gaps in literature
Uncover cross-disciplinary insights
Solve research bottlenecks (methods, datasets)
Full text analysis (Pro)