Build the software, and the experience it powers.
The build layer is where frontier earns its premium, and where a leaked secret, or a leaked customer, costs the most.
Engineering is the clearest AI return in the business, and the easiest place to leak what you cannot afford to. Three moves:
Frontier coding agents at full speed on cleared repos; core, regulated, and secret-bound code stays on self-hosted models.
Secret hygiene, an inference router, and action logging make the safe path the default path. Developers barely notice.
Product, commerce, and service designed and built on first-party data that never leaves the perimeter, as sovereign as the stack beneath it.
Claude Code and Codex at full velocity on everything classified frontier-safe.
Reviewed, tested, and merged through the same gates as any engineer's work.
Velocity and control are not a trade-off when the line is drawn repo by repo.
The disruption is not theoretical. Named, current evidence, cited, not claimed.
Anthropic reports that 70–90% of its code is now AI-written; Claude Code “reads a codebase, plans a sequence of actions, executes them, evaluates the result, and adjusts.”
Fortune →OpenAI Codex is “a cloud-based software engineering agent that can work on many tasks in parallel,” writing, testing and opening pull requests without a developer at the keyboard.
OpenAI →Cognition's Devin, an “autonomous AI software engineer,” reached a reported $25B valuation and ~$492M ARR run-rate.
TechCrunch →The build layer: software engineering and the customer experiences it runs on. We ship at frontier speed (Claude Code, Codex) while core IP and personal data stay sovereign, then design and build the experiences on top, product, commerce, and service, on the same sovereign data foundation. End-to-end customer experience management, done the European way.
Per-vertical scoring of which AI workloads belong on Claude or Codex, and which belong on self-hosted open-weight models. 84 enterprise workloads benchmarked across cost, latency, sovereignty risk, and strategic value.
A transparent cost model comparing frontier-lab API spend to self-hosted open-weight deployments on European infrastructure. Includes break-even analysis for the most common enterprise workloads.
In one 90-minute working session we map it across the frontier-sovereign axis, cost, risk, and strategic value. Then we tell you what we'd do.