The frontier model
Lumen Sovereign is coming soon. It will be the highest-capability model in the Lumen family: built for complex architectural reasoning, large-scale software transformation, and organizations that need control over where AI runs and how it is governed.
Leading the UK sovereign AI story
Co-designed with major UK institutions
Coalition members will help define the use cases, security requirements, and governance standards Lumen Sovereign must meet.
Training on UK sovereign compute
Lumen Sovereign is being developed using compute awarded through the UK Government’s Sovereign AI program, with training on Isambard-AI.
Frontier capability for sovereign AI
Lumen Sovereign is being developed for complex work in regulated environments, combining frontier-level ambition with UK-controlled training, governance, and deployment.
The next model in the Lumen family
Scout
Utility model for codebase mapping, retrieval, indexing, and high-volume support workflows. Use when you need low-cost intelligence at scale.
Outpost
Production coding model for everyday AI-assisted software engineering across teams. Use when you need strong coding performance, maintainability, and practical cost efficiency.
Sovereign
Frontier sovereign model for architecture, deep reasoning, complex transformation, and controlled deployment environments. Use when performance and control matter above all else.