Private AI architecture designed around your environment.
CuxtonAI builds AI architecture that begins with where data is allowed to be not where it is most convenient to process it. Deployment model, model choice and integration design are determined by your organisation's data sensitivity, regulatory context and technical constraints.
Choose the Infrastructure Boundary Your Organisation Can Approve.
Enterprise AI cannot rely on public black-box endpoints. Explore the 4 deployment postures engineered around your data sensitivity, network boundaries, and statutory regulatory requirements.
TOPOLOGY 01 ACTIVEOn-Premise Bare-Metal
Control Level: Full controlBoundary: Physical Air-Gap
Architectural Flow Schematic
Verified network isolation, data custody boundaries, and external egress barriers.
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Verified boundaryRestricted / blockedLive status signal
Data Egress0% External Egress
Compute LocationClient Bare-Metal
Compliance AlignmentStatutory / Defense Standard
Physical Air-Gap
On-Premise Bare-Metal
AI infrastructure runs entirely inside your physical datacenter on client-owned appliances. Prompts, retrieval documents, and weights never cross your facility's network boundary.
Target Environment:
National Defense, Central Banks, Intelligence, Sovereign Wealth & Critical Infrastructure
Guarantees that no external entity can inspect, intercept, or train upon institutional prompts
Full compatibility with statutory national security air-gapping mandates
Direct hardware optimization against existing on-premise compute and storage fabrics
How the options compare on perimeter defence, hardware velocity, and statutory approvals.
Click any column to spotlight that architecture
A layered architecture that maintains control at every level.
Every layer from data connectivity to autonomous agent execution is engineered with the organisation's governance requirements in mind. AI does not bypass security boundaries, compromise data sovereignty, or override institutional permissions.
Governance BoundaryPolicy & audit enforced at every layer
Institutional Control PlaneWhere access is defined and enforced
01
Identity & BoundaryRBAC & ABAC Enforced
Institutional Systems & Identity Management
Integrates directly with your existing enterprise infrastructure, single sign-on (SSO), directory services, and network boundaries. AI systems respect established access hierarchies rather than overriding them, ensuring no unauthorized privilege elevation.
Components
Active Directory / LDAPSAML 2.0 & OIDCNetwork DMZImmutable Audit Bus
Identity context & ACLs propagate
02
Zero Cache LeakageNative ACL Filtering
Controlled Data & Knowledge Mesh
Connects operational databases, document repositories, and institutional knowledge lakes through secure, permission-aware retrieval pipelines. Data remains encrypted within approved boundaries, and retrieval strictly enforces user-level access rights.
Components
Enterprise Vector IndexesDocument Permissions FilterRow-Level DB SecurityZero-Retention Caching
AI Execution PlaneWhere models run and work gets done
03
Air-gappedHardware-Level Boundary
Private AI Compute Tier
Executes approved open-weight models, customized architectures, or private API endpoints within isolated compute enclaves. Cuxton configures compute location based on your latency, regulatory residency, and data sensitivity requirements.
Task-bounded agents, analytical assistants, and automation pipelines presented through approved internal interfaces, existing tools, or bespoke front-ends. High-consequence actions incorporate mandatory human approval gates.
Components
Human Oversight GatesAgent Orchestration MeshInternal Enterprise PortalsREST & GraphQL APIs
Native IAM & RBAC Inheritance
AI queries dynamically inherit the requesting user's security context. If a user cannot access a file directly, the AI model cannot access it either.
Zero Privilege Escalation
Strict logical barriers prevent model outputs or prompt injections from escalating system permissions beyond pre-approved scopes.
Cryptographic Attribution & Audit
Every prompt, vector retrieval path, model decision, and workflow action is recorded with full auditability for continuous compliance.
We don't have a preferred vendor. The requirement picks the model.
Every workload has constraints before it has a model: where the data is allowed to sit, how quickly the answer has to come back, how exactly the output has to be structured, and what it can cost to run. Those four things decide the architecture.
Data classificationWhere the data is allowed to be processed.
Latency budgetHow fast the answer has to come back.
Output precisionHow strictly the result must match a format.
Cost shapeWhether spend is capital, per-call, or mixed.
Four workloads we see often. Each one is decided by its constraint, not by preference.
01
Open-weight, self-hosted
Weights you hold, running on hardware you control.
Chosen when
Data cannot leave your perimeter, under any circumstance
The deployment has to survive vendor deprecation and API changes
Auditors need to inspect the full inference path
Runs on
Bare-metal GPU or single-tenant VPC
Typically
Llama, Mistral, Qwen, DeepSeek
Trade-off
You take on the capacity planning, the hardware and the upgrade cycle.
02
Commercial API, under contract
Frontier capability, used only where the contract permits it.
Chosen when
The task genuinely needs frontier reasoning or broad world knowledge
A zero-retention agreement is in place and the data classification allows it
Traffic can run over private peering rather than the public internet
Runs on
Private peering Bedrock, Azure PrivateLink
Typically
Claude, GPT, Gemini
Trade-off
You inherit someone else's roadmap, pricing and deprecation schedule.
03
Fine-tuned for the domain
A smaller model taught your vocabulary and output format.
Chosen when
Output has to follow an internal schema or house format every time
The domain has terminology a general model reliably gets wrong
The same task runs at volume and needs to stay inexpensive
Runs on
Single-tenant inference cluster
Typically
LoRA adapters over an open-weight base
Trade-off
Narrow by design it needs retraining when the domain moves.
04
Routed ensemble
Small models take the routine work; larger ones take the exceptions.
Chosen when
Volume is high and most requests are genuinely routine
High-consequence output should be checked by a second model before it ships
Cost should track difficulty rather than a flat frontier rate
Runs on
Mixed routed across the three above
Typically
Classifier, then generator, then reviewer
Trade-off
More moving parts: routing rules and evaluation become their own workload.
Side by side
Criterion
01Open-weight, self-hosted
02Commercial API, under contract
03Fine-tuned for the domain
04Routed ensemble
Where data is processed
Your hardware
Vendor, under contract
Your hardware
Mixed, by rule
Latency
Low, predictable
Network-bound
Lowest
Varies by route
Format precision
General purpose
General purpose
Highest
High, with review
Cost shape
Capital up front
Per call
Capital, then cheap to run
Tracks difficulty
Main trade-off
You run the infrastructure
Vendor dependency
Needs retraining
More to maintain
Most deployments end up using more than one of these. Talk through your constraints and we'll tell you which ones apply including where you don't need us.
Governance principles engineered into every deployment.
AI governance is not an afterthought. It is enforced at the network, model, and application boundary before any system processes institutional information.
Ready to discuss architecture for your environment?
Book a technical discovery conversation. We'll discuss your infrastructure constraints, data sensitivity requirements and the architectural options appropriate to your context.