Governed AI for regulated industries, built on trust and governed by design.
Grace Blackwell builds governed AI software for regulated industries. TOPAS for Word brings governed AI into Microsoft Word, and HEX 165 is the governance platform behind it.
HEX 165 governs AI requests through four engines: Governance, Compliance, TOPAS and STPM (in progress). It runs in a customer's own UK cloud subscription or in a dedicated Grace Blackwell environment in a UK data centre. The Sovereign Edge IDN, an air-gapped hosting environment for the most sensitive estates, is in progress.
HEX 165 is patent-pending, reflecting our belief that agentic AI requires a new-frontier architecture: one that governs not only agents and models but also tokens, context, runtime behaviour, inference cost, and audit evidence at the point of execution.
Our goal is to enable UK / EU government and regulated enterprises to deploy sovereign, defensible AI for frontline services. We govern agents, tokens, inference costs, runtime behaviour, and audit evidence, supporting organisations in protecting data control, fundamental rights, and critical systems.
The name comes from lonsdaleite, a rare hexagonal form of diamond associated with extreme-pressure impact events. It shares the same carbon foundation as ordinary diamond, but its hexagonal lattice gives it exceptional theoretical hardness.
HEX reflects the hexagonal architecture at the heart of our system. 165 refers to the Vickers hardness benchmark associated with lonsdaleite: a symbol of resilience under pressure.
That is what HEX 165 is built to deliver: control, assurance and defensibility when regulatory, operational and sovereignty pressure is at its highest.
The principles behind everything we build.
Regulated industries run on trust. Every feature we ship, every audit log we generate, is designed to earn and keep it.
AI systems handle the heavy lifting. Humans make the decisions. Nothing submits to a regulator without the required sign-offs.
Every data pull, transformation, and validation is logged. When a regulator asks, the evidence chain is there.
SC and NPPV3 cleared personnel. The highest UK Government and law enforcement vetting for your most sensitive data.