Oklo Inc.

08/07/2026

Oklo CEO Jacob DeWitte joined Maria Bartiromo on Fox Business to discuss why Groves reaching criticality is about much more than one reactor.

Built in less than a year, the Groves Isotope Test Reactor is the fastest-built, privately financed reactor project of its kind.

More importantly, it demonstrates a new model for advanced nuclear: build, learn, scale, and iterate. As Jake shared, rising demand from AI, advanced manufacturing, electrification, and medical isotopes is creating a new era for nuclear, and America is well positioned to lead it.

Groves is more than a milestone. It's a blueprint for deploying advanced reactors faster while helping strengthen U.S. energy leadership and domestic isotope production.

Watch the full interview: https://www.foxbusiness.com/video/6402991188112

08/06/2026

WE HAVE CRITICALITY!

Oklo has completed first criticality at its Groves Isotope Test Reactor.

Built in less than a year under the ’s Reactor Pilot Program, Groves offers a concrete blueprint for future advanced nuclear deployment as the fastest fully privately financed and built reactor project of its kind.

Today, Oklo proves that advanced reactors can be built, started, and operated faster than anyone thought possible and shows the world that America can build nuclear again.

https://oklo.com/newsroom/news-details/2026/Oklos-Groves-Reactor-Achieves-First-Criticality-in-Under-a-Year/default.aspx

08/05/2026

We’re beginning our .
As we approach initial criticality, our engineers and operators will take you inside our Groves Isotope Test Reactor as they conduct the startup tests.

Our team has loaded the initial core, tested the control rods and protection systems, and brought purified water into the core under tight chemistry control. These steps are a deliberate “preflight check” that builds confidence that the reactor and its systems are behaving as expected.

These startup tests do more than demonstrate our developing blueprint for future commercial deployments–they show that American nuclear can move from design to startup on timelines that are measured in months rather than years.

We’re beginning our at our Groves Isotope T...

07/23/2026

GREEN LIGHT FOR STARTUP: U.S. Department of Energy has authorized Oklo’s Groves Isotope Test Reactor to receive nuclear fuel and begin startup activities.

This startup authorization clears the facility and team to load fuel, run startup tests, and proceed toward first criticality under its startup plan.

For Oklo, this is more than a reactor milestone. It is an organizational readiness milestone.

In just over 10 months, Groves completed engineering, construction, commissioning, development of operating programs, personnel training, and DOE readiness across all core requirements. Oklo chose the harder path to build a repeatable deployment model on private land using commercially procured fuel and equipment so future Aurora powerhouses, isotope facilities, and fuel cycle projects can build on proven deployment capabilities instead of starting from scratch.

Lessons from Groves are already informing how we build our other capabilities, demonstrating how advanced nuclear can move faster under DOE’s Reactor Pilot Program while keeping safety front and center.

Read more ->
https://oklo.com/newsroom/news-details/2026/Oklo-Receives-U-S--Department-of-Energy-Startup-Authorization-for-Groves-Reactor-Clearing-Way-for-Fuel-Loading-and-First-Criticality/default.aspx

06/26/2026

We were proud to welcome U.S. Department of Energy (DOE) Secretary Chris Wright to Idaho National Laboratory, where our first commercial Aurora powerhouse is advancing from planning to building.

At INL, we are progressing on multiple fronts. Construction, fuel, licensing, and engineering are advancing in parallel, compressing timelines and demonstrating a pace of ex*****on that few believed was possible just a few years ago.

Together with the strides we're making toward criticality at our Groves Isotope Test Reactor in Texas, this work is bigger than individual milestones. It is Oklo building full civil nuclear facilities, and demonstrating the capabilities required to build, fuel, license, and deploy advanced nuclear in the United States.

We're grateful for Secretary Wright's leadership and the continued partnership of DOE and INL as we work together to turn advanced nuclear from ambition into deployment.

06/17/2026

At Oklo, our isotope work is personal.

Some members of our team have spent decades advancing the technology that shows up in critical moments, from disease diagnosis and cancer care to space exploration.

That dedication shows up in how Oklo is built, and shapes how we think about deployment, bringing power, fuel, and isotopes together into a single platform designed to deliver more from nuclear technology.

Isotopes support everyday life in ways that most people never see. ...

06/10/2026

Two sites. Two reactors. One integrated nuclear platform.

At Idaho National Laboratory, construction is advancing on Oklo’s first commercial Aurora powerhouse, bringing clean, reliable power closer to deployment. Our team and Kiewit Corporation have removed more than 65,000 cubic yards of material to prepare the reactor foundation, roughly enough to fill 20 Olympic swimming pools.

In Texas, our Groves isotope test reactor is approaching criticality, a key step toward unlocking future production of critical materials used in medicine, industry, and space applications. Built in less than a year, Groves is helping Oklo develop the real-world experience, supply chains, workforce capabilities, and operational know-how needed to make advanced nuclear deployment faster, more repeatable, and more scalable.

Together, these projects reflect how Oklo is executing across power, fuel, and isotopes simultaneously.

This is what deployment looks like.

Watch the latest progress.

Two sites. Two reactors. One integrated nuclear platform.In less ...

06/08/2026

Oklo’s vertical integration sets us apart. We build, own, and operate our facilities across our three business lines of power, fuel, and isotopes.

Today, we're deepening that integration with the acquisition of ARMEC, bringing more than two decades of operating experience and a team of approximately 40 engineers, fabricators, machinists, welders, and technical personnel with extensive nuclear experience directly into our reactor and fuel-manufacturing programs.

Advanced nuclear deployment requires manufacturing depth. ARMEC strengthens ours.

Read more ->
https://oklo.com/newsroom/news-details/2026/Oklo-Acquires-ARMEC-to-Expand-Vertically-Integrated-Manufacturing-Capabilities-for-Advanced-Reactor-and-Fuel-Manufacturing-Programs/default.aspx

05/29/2026

Oklo CEO Jacob DeWitte joined Maria Bartiromo on Mornings with Maria to discuss the momentum behind advanced nuclear and the work Oklo is doing to deliver clean, reliable power and critical isotopes.

From advancing negotiations under the Department of Energy’s Surplus Plutonium Utilization Program to partnering with Meta to support growing data center demand in Ohio and approaching criticality with our isotope test reactor in Texas, Oklo is putting the pieces in place to accelerate deployment across its power, fuel, and isotope businesses.

Watch the full interview ->

Oklo CEO Jacob DeWitte joins 'Mornings with Maria' to discuss the rising AI energy demand, a major Meta partnership and President Donald Trump's nuclear agenda are accelerating America's nuclear future.

04/21/2026

on CNBC, Oklo CEO Jacob DeWitte discussed the White House’s push to deploy nuclear systems in space.

The challenge isn’t whether it’s possible. It’s whether we can build the infrastructure fast enough.

At Oklo, we’re building the systems needed to deliver at the speed this moment demands.

Full interview:

Jacob DeWitte, Oklo CEO, joins 'The Exchange' to discuss nuclear energy's impact on markets, plans in space and future growth.