Enterprise-grade large language model infrastructure, hosted entirely within the United Kingdom. Fully secure and compliant.
VISTHAT Systems provides private, isolated LLM infrastructure for enterprises operating under strict compliance, regulatory, or security mandates.
Built on fully single-tenant isolated architecture following ISO 27001 and SOC 2 trust principles. Data encrypted in transit (TLS 1.3) and at rest (AES-256) with zero retention options.
Every model inference, every token, every log entry stays within the United Kingdom. Guaranteed by architecture, not policy alone.
Dedicated infrastructure per client. No shared compute, no noisy neighbours, no cross-contamination risk between organisations.
Optional zero-retention mode ensures no prompt, response, or metadata is written to persistent storage. Your queries leave no trace.
Standard REST API with OpenAI-compatible endpoints. Drop-in replacement for existing integrations with enterprise authentication support.
Deployments run in fully isolated virtual private networks with no public internet egress paths. Access gated by private peering or VPN.
Contractual and architectural guarantees that no data — prompt, response, or metadata — is shared with any third party, ever.
Our security posture is built to withstand enterprise due diligence. Certifications in progress; architecture documentation available to qualified prospects.
Enterprise Prospects: Secure Architecture documentation is available under NDA to qualified organisations during procurement. Request via the inquiry form.
End-to-end encryption across all data paths. No plaintext exposure at rest, in transit, or in processing pipelines.
Integrate VISTHAT Systems into your existing stack via standard REST API. Compatible with OpenAI SDK conventions — minimal migration friction.
# Sovereign LLM endpoint POST https://api.vsisystems.co.uk/v1/chat Authorization: Bearer <your-api-key> Content-Type: application/json { "model": "vsi-enterprise-1", "messages": [ { "role": "user", "content": "..." } ], "zero_retention": true }
Scoped, rotatable API keys issued per integration. Role-based access control available for larger teams.
Point your existing OpenAI SDK at our endpoint. Minimal code changes, full sovereignty guarantees.
Avoid the public internet entirely with dedicated private link or VPN connectivity options.
Enterprise SLAs with dedicated support channels. Bespoke arrangements available for critical deployments.
VISTHAT Systems is available by application. Complete the form and our team will respond within one business day.
All access requests are manually reviewed. We work with organisations that have genuine data sovereignty requirements.
Our team responds to all enquiries within one UK business day. NDA and technical documentation available on request.
Pricing is determined based on deployment requirements, tenancy model, and volume. Discussed during onboarding.
Thank you. Our team will review your submission and respond within one UK business day.