Per seat, billed annually. Your company's brain on infrastructure you control — EU-hosted or on-premise.
Pro
For the professional who lives on their knowledge.
Annual billing −20 %. Included AI query and storage quotas shown per plan. Overages billed at transparent per-unit rates at month end — no surprise bills, no silent throttling.
ChatGPT is a chatbot that starts at zero every conversation. Sigmabrain is a brain that knows your firm. It reads your documents, builds a knowledge graph, cites its sources and tells you what it doesn't know. Every conversation makes it smarter — and it runs on infrastructure you control.
Those return documents or chunks. Sigmabrain returns a synthesized answer with citations, walks a typed knowledge graph for relationship questions ("who invested in X?"), and tells you what it doesn't know — the gap analysis is the part that changes how you work.
Your choice. Self-host the engine on your own hardware, or use our managed EU cloud. Enterprise plans support on-prem and a signed DPA. Unlike ChatGPT, your data never trains anyone's model.
No. Sign up and your brain runs — fully managed, no keys, no infrastructure. Enterprise self-hosting runs on your own hardware with your own keys.
You see usage live in the dashboard and we ask before anything changes. No surprise bills, no silent throttling.
Never. Your knowledge is yours alone — never used to train shared models. Self-hosted, nothing leaves your building; on our EU cloud it stays encrypted and isolated per customer. This is the single biggest difference from ChatGPT.