Justus Byok

A network for entrepreneurs building in stealth. Submit your information here so investors can find you: harmonic.ai/get-discovered

Dexterity is building a safety-first Physical AI platform for enterprise. Our Physical AI powers applications in e-commerce, parcel, retail, and aviation. Uniquely, we developed the first transactable World Model built for long-horizon reasoning in Physical AI, Foresight. We are in production with world leading customers, and have business operations in the US, Japan, and Singapore.

Semiconductor interconnects

The world’s leading prediction market platform, where users trade on the outcomes of real-world events. By putting real money behind opinions, Polymarket cuts through noise, bias, and speculation to surface a single powerful signal: what people actually believe will happen. From elections and geopolitics to business, culture, and breaking news, Polymarket transforms headlines into live markets with constantly updating probabilities. The result is a real-time, crowd-driven forecast of the future — more dynamic and often more accurate than traditional polling or expert analysis. Polymarket provides clarity. Not through commentary, but through markets.

Aalo Atomics designs and builds factory-manufactured nuclear power plants for data centers, industry, and cities. AI infrastructure requires firm, high-density power on timelines the existing grid cannot support. The Aalo Pod delivers it as a complete modular power plant, mass-manufactured in a factory and sited directly at the load. In July 2026, the Aalo Critical Test Reactor achieved first criticality at Idaho National Laboratory as part of the U.S. Department of Energys Reactor Pilot Program. Construction of the pilot Aalo-X full-power 10 MWe power plant is underway. Founded in 2023 and headquartered in Austin, Texas, Aalo pairs nuclear scientists, engineers, and operators with builders from technology, defense, and manufacturing to eventually achieve 3¢/kWh nuclear electricity at scale, growing from 2 people to 200 in three years with $300M+ raised and an operational factory. Energy without limits, for everyone.

Positron delivers vendor freedom and faster inference for both enterprises and research teams, by allowing them to use hardware and software explicitly designed from the ground up for generative and large language models (LLMs). Through lower power usage and drastically lower total cost of ownership (TCO), Positron enables you to run popular open source LLMs to serve multiple users at high token rates and long context lengths. Positron is also designing its own ASIC to expand from inference and fine tuning to also support training and other parallel compute workloads.

The operating system for agentic AI in high-consequence environments. Human intent. Machine execution. Decision advantage in minutes, not months. Our platform, Nebula, orchestrates AI agents, models, tools, and data sources into governed workflows. Full provenance on every action. Human oversight at every step. Deployed in production inside classified environments today. Built for the intelligence community and the Department of Defense. Founded by veterans of the CIA, JSOC, and frontier AI.

Ground combat is defined by unforgiving terrain, harsh conditions, and split-second decisions. At Overland AI, we enhance ground power while protecting lives. Our OverDrive autonomy stack enables ground vehicles to navigate off-road without GPS or direct operator control, while our OverWatch C2 interface provides commanders with precisely coordinated capabilities that are vital for complex missions on the modern battlefield. Overland AI is developing these capabilities and putting them into the hands of tactical operators today. Partnering with the U.S. Army, Marine Corps, SOCOM, DARPA, and DIU, we are delivering advanced solutions that reduce risk and empower soldiers to succeed in contested environments. Join us in shaping the future of ground operations and national security.

Astro Mechanica is a vertically integrated aerospace company developing a scalable technology platform to power critical infrastructure, mission operations, and the future of flight. We apply aerospace engineering and quality standards across our products, delivering high performance, reliability, and efficiency for the most demanding operating environments. Astro Mechanica is backed by leading venture and strategic investors, including Andreessen Horowitz (a16z), Giant Step Capital, United Airlines Ventures, and Voyager Ventures.

Starcloud is building data centers in space to address the AI energy challenge. Starcloud recently launched the first Nvidia H100 chip to space. Falling launch costs enable Starcloud to capitalize on the abundant energy and ability to rapidly scale in space. Starcloud was founded in January 2024 and raised a $170M Series A in early 2026, becoming the fastest unicorn in YC history. In August 2026, they announced a $250M raise at a $2.3bn valuation with investment from Benchmark, NVIDIA, and Cisco. Their backers include Y Combinator (S24), Benchmark, EQT, NFX, In-Q-Tel, NVIDIA, and the World Economic Forums Technology Pioneers. Starcloud Concept Video: Starcloud.com

Peace through Deterrence

Erebor is a nationally chartered bank built for the next century of American innovation.

This is a catchall company for the doers, the thinkers, and the innovators.

Amca designs and manufactures advanced products for the most important aircraft in the world. We own a growing family of legacy aerospace suppliers across the country, including Electro-Mech Components, Cal-Draulics, Aerospace Control Products, Electrocube, and others.

A network for entrepreneurs building in stealth. Submit your information here so investors can find you: harmonic.ai/get-discovered

Dexterity is building a safety-first Physical AI platform for enterprise. Our Physical AI powers applications in e-commerce, parcel, retail, and aviation. Uniquely, we developed the first transactable World Model built for long-horizon reasoning in Physical AI, Foresight. We are in production with world leading customers, and have business operations in the US, Japan, and Singapore.

Semiconductor interconnects

The world’s leading prediction market platform, where users trade on the outcomes of real-world events. By putting real money behind opinions, Polymarket cuts through noise, bias, and speculation to surface a single powerful signal: what people actually believe will happen. From elections and geopolitics to business, culture, and breaking news, Polymarket transforms headlines into live markets with constantly updating probabilities. The result is a real-time, crowd-driven forecast of the future — more dynamic and often more accurate than traditional polling or expert analysis. Polymarket provides clarity. Not through commentary, but through markets.