Where Precision Meets Purpose.
Five Nines Consulting builds technology products and takes on consulting engagements with the discipline of military operations and the rigor of modern engineering. Veteran-founded. Built for the long haul.
A small team. Real engineering. Built to last.
Five Nines Consulting is a veteran-founded technology company. We build products that solve real problems and take on consulting engagements where our discipline makes a measurable difference. PromptSentry, our AI security guardrail, is the first product to come out of that effort.
We're small on purpose, focused on doing fewer things at a higher standard, with a long-term commitment to bringing more disciplined operators into engineering as the company grows.
Read our full storyPromptSentry, AI Security Guardrail
Protects AI applications from prompt injection, jailbreaks, PII leaks, and explicit content, with a multi-stage detection pipeline that delivers an AI-verified verdict in under 900ms (p50). Benchmarked on 2,700+ adversarial prompts with 98.92% attack defense accuracy.
Built for educational platforms protecting kids, and enterprises protecting their workforce.
Simplifying technology for your business
Beyond PromptSentry, FNC takes on consulting engagements across cloud migration, custom development, IT support, and infrastructure. Honest scoping. Real timelines. No surprises.
- IT Services
- DevOps
- Cloud Services
- Custom Web Development
- Software Development
We don't sell hype. We ship products that work, take engagements we can deliver on, and tell you the truth about timelines and trade-offs. That's the discipline part.