Best AI security gateways

Ten platforms that sit between your applications and your models. The ordering below is editorial and reflects category fit and documentation quality — numeric scores stay marked pending until we finish verifying each capability against official sources.

1. #1CG

   Constellation Gate AI

   AI security gateway

   Gate is one of the few products marketed explicitly on both halves of the AI gate problem: it inspects traffic inline for injection, secrets and PII, and it advertises automatic token reduction on the same request path. That combination is the thesis GateYourAI tracks. Our verification of individual controls and of the vendor's benchmark and savings figures is still in progress, so no score is published yet.

   Best for: Teams running coding agents that want prompt security and token reduction in one hop

   Full review →Compare →
2. #2GA

   Gate.AI

   AI model gateway

   Gate.AI is a model-access and governance gateway, not an inline prompt-security product. Its published positioning is unified access to 200+ models, dynamic routing, enterprise governance with full-chain tracing, and zero data retention by default. Prompt-injection defence, PII redaction and secret scanning are not documented on the material we have reviewed, so we mark them as not publicly documented rather than absent. Do not confuse Gate.AI with Constellation Gate AI — they are separate companies with separate products.

   Best for: Organisations consolidating access to many models behind one API with cost governance

   Full review →Compare →
3. #3F5

   F5 AI Gateway

   Network AI security

   F5 brings enterprise traffic-management maturity to the AI gate category, which matters most to organisations that already run F5 for application delivery. Detailed per-feature verification against F5 documentation is queued; we do not publish capability marks from product-page copy alone for enterprise platforms of this size.

   Best for: Large enterprises standardising AI traffic policy on existing F5 infrastructure

   Full review →Compare →
4. #4KO

   Kong AI Gateway

   Enterprise AI gateway

   Kong's advantage is that AI controls are plugins on a data plane many organisations already operate, with self-hosted and Kubernetes deployment as first-class options. Per-plugin verification against Kong's developer documentation is queued before we mark individual controls as available.

   Best for: Platform teams already running Kong that want AI policy in the same data plane

   Full review →Compare →
5. #5PK

   Portkey

   AI model gateway

   Portkey sits closest to the middle of the security-and-cost thesis for teams that want optionality: an open-source gateway they can run themselves, with guardrails, observability and budget controls in the same layer. Individual capability marks await documentation verification.

   Best for: Teams that want an open-source gateway with guardrails and spend controls

   Full review →Compare →
6. #6CF

   Cloudflare AI Gateway

   Enterprise AI gateway

   Cloudflare's gateway is the low-friction option for teams already on its network, and it addresses the cost half of the thesis directly through caching, limits and analytics. Its security guardrails sit across a wider portfolio, so we verify those separately before marking them.

   Best for: Teams already on Cloudflare that want fast caching, analytics and spend limits

   Full review →Compare →
7. #7TF

   TrueFoundry AI Gateway

   Enterprise AI gateway

   TrueFoundry's differentiator is deployment posture: gateway capability inside the customer's own environment. That matters for organisations where prompt content itself is the regulated asset. Capability marks await documentation verification.

   Best for: Enterprises that need gateway capabilities inside their own cloud boundary

   Full review →Compare →
8. #8FT

   Fortinet FortiAIGate

   Network AI security

   FortiAIGate is the natural choice where AI traffic policy is owned by the network security team rather than the platform team. Its documentation set is extensive and per-feature verification is queued before capability marks are published.

   Best for: Security organisations standardising AI controls inside an existing Fortinet estate

   Full review →Compare →
9. #9AZ

   Azure API Management AI Gateway

   Enterprise AI gateway

   For Azure-standardised organisations the gateway question is often already answered: API Management provides the policy surface, and Content Safety supplies moderation. Note that content moderation is not equivalent to prompt-injection defence, and we mark those separately.

   Best for: Organisations standardised on Azure that want gateway policy in their existing API layer

   Full review →Compare →
10. #10NT

    NeuralTrust TrustGate

    AI security gateway

    TrustGate's open repository makes it unusually verifiable for a security product: claims can be checked against code rather than marketing copy. That verification work is queued and we publish capability marks only once completed.

    Best for: Security-minded teams that want an open-source gateway they can inspect and run

    Full review →Compare →

Quick capability matrix