Three Sigma is a document intelligence platform powered by generative AI that transforms static files into dynamic, queryable knowledge. Users can upload PDFs, reports, manuals, or any text-based content, and instantly receive AI-driven summaries, answers, and structured insights.
The platform supports conversational interactions, meaning you can chat with your documents instead of scrolling endlessly. Designed to handle everything from a handful of pages to enterprise-scale uploads, Three Sigma is ideal for research, internal documentation, legal analysis, and more. Its pricing is flexible based on page volume, making it scalable for casual users and large teams alike.
Three Sigma Review Summary Performance Score
A
Content/Output Quality
Contextual & Analytical
Interface
Minimal & Functional
AI Technology
- Generative AI
- NLP Summarization
- Conversational Retrieval
Purpose of Tool
Turn document uploads into interactive, AI-powered summaries
Compatibility
Pricing
Paid plans starting at $14/month (based on page volume)
Who is Best for Using Three Sigma?
? Researchers: Quickly summarize lengthy whitepapers or journals by uploading content and querying key findings with AI-generated clarity.
? Legal professionals: Analyze contracts, case files, and discovery documents using natural language questions to extract critical context fast.
? Corporate teams: Turn manuals, internal reports, and policies into AI-queryable formats for fast onboarding and knowledge management.
? Consultants: Streamline client deliverables and data analysis by converting complex materials into simple, AI-generated overviews.
AI-Powered Document Summarization
Conversational Q&A Over Files
Flexible Page-Based Upload System
Natural Language Query Support
PDF and Text File Compatibility
Scalable Document Processing
Context-Aware Insight Extraction
Easy Onboarding & Clean Interface
Real-Time Content Parsing
Is Three Sigma Free?
Three Sigma is a paid tool with no fully free plan, but it offers a flexible monthly subscription starting at $14/month.
- Standard Plan � $14/month
- Upload up to 750 pages per month
- AI-generated summaries and chat over documents
- Ideal for individual users
- Start with a free trial
- Scalable Plans � Custom pricing
- Adjust page upload slider for more than 750 pages
- Built for businesses and power users
- Supports 100k+ pages per month
Three Sigma Pros and Cons
Extremely fast document processing and summarization
Great value starting at just $14/month
Query documents like a chatbot
Clean and simple interface for beginners
Ideal for academic, legal, and corporate use
No free forever tier available
Requires PDF/text-based input formats
Advanced formatting not retained post-upload
Limited collaborative features
Live support access only via email
