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Defense · 26 May 2026

Designing an air-gapped AI gateway: slash token costs and neutralize compliance risk

Pair open-weight reasoning models with an inline gateway inside your enclave. ~96% token cost reduction, zero egress, full audit trail.

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VA
Vamsi Anusuri
Chief Product Officer, EVEDY

The enterprise AI honeymoon is over. For Fortune 500 CISOs and VPs of Engineering, the initial rush to deploy generative AI has crashed into two competing brick walls: runaway token costs and untenable compliance risk.

Engineering teams are burning through budgets routing highly sensitive internal data to public API endpoints. Security teams, meanwhile, are watching the EU AI Act, APRA CPS 234, and data sovereignty laws tighten by the quarter. Every prompt that crosses the corporate firewall is a potential breach waiting to happen.

The solution is not to block AI adoption. It is to change the architecture. By pairing high-performance open-weight models (DeepSeek R1, Llama 3, Qwen) with an air-gapped AI gateway, enterprises can achieve absolute data sovereignty while slashing token costs by over 90%.

01 · Economics

The API tax is unsustainable

Before security, the math. Complex agentic and reasoning-heavy workloads on proprietary models carry a steep off-premise premium. Current per-million-token pricing (early 2026):

Output cost · USD per 1M tokensscale 0 - $60
OpenAI o1
Public Cloud
Input
$15.00
Output
$60.00
DeepSeek R1 (API)
Public Cloud
Input
$0.55
Output
$2.19
DeepSeek R1 (Self-hosted)
Air-gapped
Input
Compute cost only
Output
Compute cost only
≈ 96% cost reduction · DeepSeek R1 vs OpenAI o1 (output tokens)

DeepSeek R1 benchmarks competitively against o1 for complex reasoning and mathematical logic at roughly 96% lower API cost. But even at $0.55/M tokens, routing Tier-1 financial or healthcare data to an external API still violates strict data boundary regulations. The ultimate strategy is to pull these open-weight models inside your own walls.

02 · Definition

What "air-gapped" actually means

"Isolated" and "air-gapped" are not synonyms. Most enterprise AI deployments that call themselves isolated still use NAT gateways and egress allowlists - segregated, but outbound traffic exists.

What air-gapped forbids
  • No NAT
  • No DNS to external hosts
  • No public CA chain
  • No route by which a packet leaves the enclave
Pre-staged inside the enclave
  • Local model registry (DeepSeek R1, Qwen, Llama)
  • Local vector DB for embeddings & RAG
  • EVEDY control plane intercepting < 300ms
  • Local SIEM sink for audit
03 · Architecture

Active control, zero egress

If you deploy open-source models internally without a governance layer, you still have massive internal risk. A standard engineer asking a local LLM to summarize the CFO's payroll data - the local LLM will happily comply. The gateway is the circuit breaker.

Evedy air-gapped architecturezero egress · <300ms
User Interface
Slack · IDE · Internal app
EVEDY active gateway inline
Entra ID / RBAC
Identity
Policy Engine
EU AI Act · CPS 234
PII Scanner
In / out
[ALLOW] · [BLOCK] · [REDACT]
Local LLM
DeepSeek R1 · offline GPUs
↓ every decision
Immutable audit log
On-prem Splunk · Datadog (local)
Local model registry & vector DB
RAG · embeddings · weights
Pillar 1
Identity-bound execution
Before the prompt ever hits your locally hosted DeepSeek model, EVEDY intercepts it mid-flight, queries your local Entra ID or Active Directory, and hard-blocks instantly if the user lacks the required role (e.g. Executive_HR).
Pillar 2
Dynamic PII redaction
If your local agent hallucinates or attempts to output sensitive customer data - a home address, a card number - EVEDY scans the payload on the return trip and masks it [REDACTED: Policy APRA_CPS234] before it reaches the user's screen.
Pillar 3
Immutable, offline auditing
Every [ALLOW], [BLOCK], and [REDACT] decision is cryptographically logged and routed to your internal SIEM (on-prem Splunk, Datadog). When the regulator asks how AI is making decisions, you have a tamper-evident trail - without sending a single byte of telemetry to an external vendor.
04 · ROI

The economics of shifting left

CapEx
Predictable compute
Transition from volatile token-based OpEx to fixed infrastructure economics.
0 bytes
Egress to vendors
Classified defense or regulated banking data physically never leaves the building.
Runtime
Compliance gating
Engineers ship Copilots aggressively. Guardrails catch violations dynamically - no quarterly review backlog.
"You don't need more AI. You need control over the AI you already have."
Ready to see it in action?
Evedy doesn't ship dashboards - we ship infrastructure.
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