Driven by Purpose. Powered by People.
Sthenos (σθένος): Greek for “strength” the power to endure and prevail.
— Defence DNA
Born Inside a Defense Powerhouse
This heritage provides us with:
Access to real operational environments for testing and validation.
Cross-disciplinary knowledge across sensors, systems, and integration.
A foundation of trust, credibility, and long-term strategic vision.
— Architecture
Built for Security, Reliability, and Performance.
Our infrastructure is designed to meet the highest standards of defense-grade cybersecurity and data sovereignty. All development and deployment environments are on-premise, ensuring full control, confidentiality, and operational continuity.
Top-tier Hardware & Software
Cutting-edge GPU clusters built for AI model training, fine-tuning, and real-time inference — delivering unmatched performance for mission-critical defense applications.
Secure Private & Public Cloud
Security-by-design underpins our entire architecture, combining private cloud confidentiality with the agility of public infrastructure for complete data control.
Future-proof Design 8×NVIDIA H200
Scalable, high-performance setup enabling seamless integration of emerging technologies and rapid AI deployment across evolving defense needs.
Compliant Operations
Every process follows strict defense-grade compliance and cybersecurity standards, ensuring secure, auditable, and resilient development environments.
— Innovation
What sets us
apart.
Sthenos AI stands at the intersection of defense expertise and artificial intelligence innovation.
Defense-Driven Execution
Mission-ready AI that delivers real impact in defense environments.
Defense-Born Expertise
Backed by EFA Group, we accelerate delivery through shared expertise and synergy.
Defense-Ready Talent
We unite top Greek engineering and AI talent to build mission-grade systems.
— Our People
The Team Behind the AI
We bring together defense operators, academic researchers, and high-tech engineers from across Europe. Together, we:
Build AI solutions that meet real operational needs.
Turn research into deployable systems.
Engineer for precision, performance, and security from day one.
The result: defense-grade AI built by people who understand the mission.
