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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

Sune AI logo
Sune AI
✓ verifiedFreemium

Collaborative AI workspace combining docs, sheets and integrations with AI agents, aimed at teams wanting a 'second brain'.

1.7K visits/mo
Keymate.AI logo
Keymate.AI
✓ verifiedFreemium

AI memory workspace that saves your own sources (PDFs, Docs, YouTube, email) and answers questions from them, also inside ChatGPT.

1.5K visits/mo11K saves
Paperguide logo
Paperguide
✓ verifiedPaid

All-in-one research platform for reading, writing and managing papers; high traffic.

286K visits/mo4.1K saves
ChatPDF logo
ChatPDF
✓ verifiedFreemium

Popular tool to chat with PDFs and other documents, giving summaries and cited answers, with a free daily tier and no-signup start.

1.8M visits/mo43K saves
Tavily logo
Tavily
✓ verifiedFreemium

Real-time web search and content-extraction API that grounds AI agents with fresh, structured data for research and RAG.

1.3M visits/mo8.9K saves
Pricing
Starter: $9.95/mo (5,000 credits/mo, unlimited workspaces)

No public pricing

Free: $0/month
Starter: $9/month
Advanced: $16/month

No public pricing

Pay As You Go: $0.008/credit
Core features
  • Real-time collaborative docs, sheets, kanban boards, and calendars
  • Integrations with Notion, Salesforce, Slack, Google, GitHub, and more
  • AI agents that perform background research and content tasks
  • Natural-language automation builder with a visual node editor
  • Cross-document AI analysis to surface latent connections
  • Centralized file storage and workspace sharing
  • Private memory built from your own files and sources
  • Supports PDFs, Google Docs, URLs, YouTube and emails
  • Scoped, grounded question answering
  • Organization by project/campaign with shared team collections
  • Use inside ChatGPT
  • Automation via Make.com
  • AI Search
  • Literature Review
  • AI Writer
  • Reference Manager
  • Chat with PDF
  • Chat with PDFs, Word, PowerPoint and text files
  • Summaries with cited sources
  • Multi-file chats via folders
  • Any-language upload and chat
  • Extra tools: AI writer, detector, flashcards, slides
  • No-signup quick start
  • Real-time web search API
  • Page content extraction and crawling
  • LLM-optimized structured/chunked output
  • Built-in PII and prompt-injection filtering
  • High-throughput, low-latency infrastructure
  • Drop-in integrations with major LLM providers
Use cases
  • Building a shared knowledge base for a team's projects
  • Automating multistep workflows like report generation or email drafting
  • Using AI agents to handle background research or data analysis tasks
  • Replacing scattered documents and spreadsheets with one collaborative hub
  • Querying your own documents with AI
  • Marketing, ops and sales knowledge management
  • Keeping team knowledge searchable and shared
  • Auto-capturing and searching emails
  • Finding relevant research papers and getting research-backed answers.
  • Analyzing papers faster with accurate data extraction.
  • Generating and polishing academic content using AI.
  • Streamlining citation and reference management.
  • Understand research papers
  • Study and homework help
  • Review contracts and reports
  • Translate and summarize documents
  • Grounding AI agents with live web data to reduce hallucination
  • Building research or retrieval-augmented generation (RAG) applications
  • Powering AI-driven search assistants
  • Enterprise-scale agents needing reliable web access
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