What is SentinelGateway?

SentinelGateway is a single compiled Go binary AI gateway that routes requests across OpenAI, Anthropic, Gemini, and Groq. It adds ~13ms of overhead and provides deterministic semantic caching (0 tokens billed on cache hits), zero-trust PII scrubbing, active fallback routing, and multi-tenant key isolation — fully deployable air-gapped inside your VPC.

How does SentinelGateway's semantic caching work?

SentinelGateway uses Redis-backed deterministic semantic caching to identify repeat or near-identical prompts. When a cache hit is detected, the cached response is returned in under 50ms for 0 tokens billed — no LLM call is made. Cache TTLs are tier-scaled based on your subscription plan.

How does SentinelGateway handle PII scrubbing and data privacy?

PII scrubbing runs natively in-memory inside the Go binary — no external Presidio API or third-party service is required. It detects and redacts credit card numbers, Social Security Numbers, email addresses, and other sensitive identifiers before they reach any LLM provider, consistent with NIST SP 800-122 guidelines for protecting PII confidentiality and NIST IR 8053 recommendations on de-identification of personal information.

What AI providers does SentinelGateway support?

SentinelGateway supports OpenAI (all gpt-* models), Anthropic Claude, Google Gemini, and Groq. It uses model-prefix routing with full OpenAI wire-format compatibility, meaning most applications require zero code changes to migrate.

Can SentinelGateway be deployed in an air-gapped or VPC environment?

Yes. SentinelGateway is a single compiled Go binary with no mandatory outbound connections to any third-party control plane. It runs completely local to your VPC with zero external dependencies, making it compatible with strict egress policies, air-gapped environments, and HIPAA, SOC 2, and GDPR compliance frameworks.

⚡ HIGH-PERFORMANCE AI GATEWAY · SUB-25MS PROXY LATENCY

Cut LLM costs by 60%.
Eliminate outages. Zero downtime.

The high-performance API gateway for production AI. Route across OpenAI, Claude, Groq, and Gemini with instant failover, sub-25ms semantic caching, and in-flight PII redaction.

Get Started Free

1-line drop-in for OpenAI SDK · No credit card required

View Pricing

Works with every major LLM provider out of the box

OpenAI Anthropic Google Gemini Groq LangChain LlamaIndex

The AI infrastructure layer your app needs

Active Fallback Routing

If OpenAI rate-limits you or goes down, we instantly route to Anthropic, Gemini, or Groq. Your users never see an error.

Deterministic Semantic Caching — $0.00 Cache Hits

Stop paying for identical questions. Our Semantic Cache serves repeat prompts in under 50ms for exactly zero tokens.

Zero-Trust PII Scrubbing

Block Prompt Injections, redact email addresses, SSNs, and credit card numbers before they reach any LLM — with a single toggle.

Drop in. No refactoring required.

Add SentinelGateway to your existing AI stack with two lines of code. No new SDK, no breaking changes, no downtime.

Two lines. Every model. Instant security.

Replace your OpenAI base_url with our endpoint. Your existing code instantly gains intelligent fallbacks, semantic caching, and zero-trust PII scrubbing — no SDK changes required.

Compatible with all OpenAI SDK versions
Works with LangChain, LlamaIndex, and AutoGen
Enterprise BYOK — zero platform markups

Request Tracing

Your AI Command Center

Monitor your entire AI fleet from a single dashboard. Every prompt, every provider call, every millisecond — logged and searchable in real time.

Raw & Redacted Prompt

See exactly what your users sent and the scrubbed version Sentinel forwarded to the LLM — side by side. Instantly verify that PII never escapes your perimeter.

Per-Provider Latency

Track response time per provider on every single request. Spot degraded endpoints before your users do and let Sentinel automatically reroute traffic.

Live Fleet Dashboard

One view across every agent, user, and model in your fleet. Filter traces by end-user ID, model, cache status, or fallback trigger — no log excavation required.

Every trace is stored in your tenant's audit log. Start tracing for free →

Find a plan that's right for you

Start free and scale as you grow. No credit card required for the Hobby tier.

Hobby

$ 0 /mo

For developers evaluating the platform. No credit card required.

Includes:

10,000 tokens / month
Multi-Provider Routing (OpenAI, Anthropic, Gemini, Groq)
Universal Auto-Failover (Zero Downtime)
Exact-Match Prompt Caching
Interactive Live Playground & Trace Inspector
24-Hour Trace History

Start For Free

Sound too good? Hear what our customers have to say

SentinelGateway always has a head start and introduces cutting-edge AI routing features first. Our fallback coverage has been flawless.

SentinelGateway has made a huge impact on our compliance posture. PII scrubbing runs automatically — we never worry about data leaks reaching our LLMs.

The semantic cache cut our OpenAI spend by 40% in the first week. Identical prompts just fly back instantly — for zero tokens.

SentinelGateway is the tool devs love. The more you make infrastructure invisible, the more they can focus on building great AI products.

SentinelGateway handles every stage of our AI pipeline — routing, caching, security. It's become the de facto infrastructure for everything LLM-related.

With SentinelGateway I can actually ship reliable AI apps without a dedicated MLOps team. Two lines of config and everything just works.

It's not just easier to swap providers — it's also easier to add new team members. Everyone works against the same unified API key.

SentinelGateway's zero-trust security helps keep our team lean. PII blocking and prompt injection detection make us compliant without hiring a security team.

SentinelGateway enables speed and scale. We route millions of tokens a day across three providers and haven't seen a single user-facing error.

Stop juggling API keys. Start building.

Get 10,000 Free Tokens

Cut LLM costs by 60%.Eliminate outages. Zero downtime.