Eight capability areas, one engine. ChatGPT, Codex & Claude answer questions; Sigmabrain answers questions about YOUR firm — with sources, gaps, a knowledge graph and a desktop app. Every claim here ships in the product.
typed edges, extracted on every write
Recall@5 on the benchmark corpus
P@5 points over vector-only RAG
native data connectors
autonomous jobs in production
Four steps. No tagging, no data entry — the brain wires itself.
Matters, emails, PDFs, voice notes, WhatsApp — by folder, upload or copilot. OCR pulls text from scans too.
Upload · OCR · copilotOn every write the engine extracts typed edges — people, deadlines, relationships — as a legal knowledge graph.
Entities · graph · embeddingsAsk in plain language. Hybrid retrieval across vector, keyword and graph finds the decisive passages.
Hybrid search · rerankingA synthesized answer with page-level citations — plus an honest note on what the file is still missing.
Citations · gap analysisChatGPT, Codex & Claude start at zero every conversation. Sigmabrain reads YOUR documents and writes the answer — with citations and explicit gaps. No hallucinations, no guessing.
Cross-document synthesis over people, companies, deals and ideas — written out, not pasted together. ChatGPT can't do this because it doesn't know your documents.
Each statement links to its source page. One click to verify before you rely on it. ChatGPT hallucinates sources; Sigmabrain cites real pages.
The answer ends with what the brain does NOT know yet — so silence never masquerades as certainty. No other tool does this.
Ask about a person before a meeting: last contact, open commitments, what changed since. Your firm's memory, not a fresh chat window.
$ what's still open with the founders I met this week?
→ 3 commitments found across 4 meetings:
1. Intro to fund-a partner (promised Tue, not sent)
2. Term sheet feedback for acme-example (due Fri)
3. Follow-up deck from widget-co (they owe YOU)
⚠ Gap: no notes filed for Thursday's 2pm meeting
Up and running in minutes. First answer the same day.