Three Sigma

Three Sigma is the 4.7-star AI research assistant that slashes document review time by 90%. Upload entire folders, ask natural-language questions, and receive instant, traceable answers with exact page citations. From due-diligence data rooms to regulatory submissions, teams gain audit-ready insights without opening a single PDF. Free tier available; Pro unlocks unlimited uploads and ChatGPT plugin power.

Instant Multi-Document Q&A
Upload an entire M&A data room or quarterly earnings archive and ask, “How did the French revenue forecast change YoY?” The tool returns a concise paragraph plus clickable evidence cards.

Traceable Evidence
Each response carries an expandable sidebar that reveals the exact passage, letting users one-click verify sources and export audit trails for compliance workflows.

ChatGPT Plugin Integration
Subscribers unlock a lightweight plugin that brings Three Sigma’s retrieval muscle directly into ChatGPT, eliminating context-window limits for large corpuses.

Free Solo Mode
No documents handy? Toggle Solo Mode to enjoy a ChatGPT-like experience without leaving the platform—perfect for quick brainstorming.

Upcoming GPT-4 Vision for Charts & Tables
The roadmap includes native image parsing, allowing analysts to query bar charts, waterfall graphs, and financial tables as effortlessly as plain text.