Sentinel Gateway icon
Sentinel Gateway icon

Sentinel Gateway

A high-performance, Go-native AI gateway for secure, air-gapped environments. Sub-15ms overhead with built-in NIST-aligned PII scrubbing and semantic caching. No Python, no bloat.

Sentinel Gateway screenshot 1

Cost / License

  • Freemium (Subscription)
  • Proprietary

Platforms

  • Online
  • Software as a Service (SaaS)
Sentinel Gateway screenshot 1
Sentinel Gateway screenshot 2
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Sentinel Gateway information

  • Developed by

    Unknown

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription ranging between $29 and $149 per month + free version with limited functionality.

  • Alternatives

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  • Supported Languages

    • English

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Development
Sentinel Gateway was added to AlternativeTo by oGrizz on and this page was last updated .
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What is Sentinel Gateway?

Sentinel Gateway was built for engineers who need to scale LLM infrastructure without the "latency tax" of traditional Python or Node.js proxies.

While most gateways introduce 50ms–100ms of overhead, Sentinel is a single, compiled Go binary designed for VPC-native deployment. It handles model routing, semantic caching, and PII scrubbing in-memory, ensuring your prompts never leave your secure environment for third-party processing.

Key Technical Advantages:

Performance: Ultra-low ~13ms overhead at P99.

Security: Native PII redaction (Emails, SSNs, CCs) aligned with NIST SP 800-122 standards.

Efficiency: Semantic caching reduces token costs by up to 80% with near-zero latency hits.

Privacy: 100% air-gapped capable; no external SaaS control plane or telemetry required.

Reliability: Automatic provider failover (OpenAI, Anthropic, Gemini, Groq) with zero configuration drift.

Why Go-Native? We moved away from the library-heavy approach to eliminate dependency bloat and Python’s Global Interpreter Lock (GIL) issues. Sentinel is a "drop-in" infrastructure layer that works by simply changing your OpenAI base URL.