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Onebrief

Category: AI Agents

A collaborative operating system for military headquarters that digitizes and automates the military decision-making process (MDMP) and joint operational planning. Onebrief was founded in 2019. The company is led by Grant Demaree. Based in Honolulu, USA. Team size: 350+. Total funding raised: ~$353M total (all confirmed rounds). Latest round: Series D ($200M, Jan 2026 led by Battery Ventures & Sapphire Ventures at $2.15B valuation). Key investors include ["Battery Ventures","Sapphire Ventures","General Catalyst","Insight Partners","Spark Capital","Red Cell Partners","Salesforce Ventures","Y Combinator"].

Founded
2019
Headquarters
Honolulu, USA
Team size
350+
Total funding
~$353M total (all confirmed rounds)

Value proposition

Replaces fragmented, manual planning tools like PowerPoint and Excel with a unified, real-time digital environment that accelerates the 'speed of command' and ensures data synchronization across all staff sections.

Products and solutions

["Onebrief Collaborative Planning Platform (Core OS)","Digital Military Decision-Making Process (MDMP) Suite","Joint Operation Planning Process (JOPP) Workflow Tools","Integrated Wargaming & Simulation Module (Battle Road integration)","AI-Assisted Course of Action (COA) Development & Analysis"]

Unique value

It is the first platform to successfully translate complex military doctrine into a real-time collaborative software environment, moving military planning from static slide decks to a dynamic, data-centric 'single source of truth.'

Target customer

U.S. Department of Defense (DoD), Combatant Commands (COCOMs), and international military allies including NATO and Five Eyes nations.

Industries served

["Defense","National Security","Government","Aerospace"]

Technology advantage

Proprietary workflow engine that mirrors military staff structures (S1-S9); enables instant synchronization between maps, synchronization matrices, and orders; utilizes AI to automate the tedious aspects of operational design and logistics calculation.

How they differentiate

Onebrief differentiates by digitizing the Military Decision-Making Process (MDMP) into a real-time collaborative environment, replacing static PowerPoint decks and Excel sheets with a dynamic 'single source of truth' that synchronizes maps, sync matrices, and orders automatically.

Main competitors

["Systematic (SitaWare)","Microsoft (Legacy Defense Stack)","Palantir Technologies","Anduril Industries (Lattice)"]

Key partnerships

["U.S. Army and U.S. Air Force (Operational users)","U.S. Indo-Pacific Command (INDOPACOM)","Battle Road Digital (Acquired for wargaming tech)","Y Combinator (S21 Alumnus)","Strategic Investors: Battery Ventures, Sapphire Ventures, General Catalyst, and Insight Partners","Second Front Systems (Preferred Deployment Partner, May 2026)"]

Notable customers

["U.S. Army","U.S. Air Force","U.S. Indo-Pacific Command (INDOPACOM)","NATO Allied Command Transformation","Five Eyes Partner Nations"]

Major milestones

["Reached Unicorn status with a $2.15B valuation in January 2026","Acquired Battle Road Digital to integrate advanced wargaming and simulation capabilities","Successfully transitioned from Y Combinator (S21) to a Series D defense leader in under 5 years","Established core operational use within major U.S. Combatant Commands","Named a Fast Company Most Innovative Company for 2026","Hired Cory Ondrejka (ex-Google/Meta) as CTO to lead AI and wargaming integration"]

Growth metrics

Estimated $19.1M ARR (2024); Team size expanded to 200+ employees; Achieved Unicorn status with a $2.15B valuation.

Market positioning

Disruptive defense-tech unicorn positioned as the modern 'Operating System' for military headquarters and operational planning.

Geographic focus

United States (specifically INDOPACOM), NATO member nations, and Five Eyes allies.

Patents and IP

No specific public patents disclosed; the company relies on proprietary software architecture and deep doctrinal integration (Trade Secrets).

About Grant Demaree

Grant Demaree is a former U.S. Army officer with extensive experience in military operational planning. He served as an Infantry Officer and deployed to Liberia during the Ebola epidemic (Operation United Assistance) and to Iraq with the Special Operations Joint Task Force - Operation Inherent Resolve (SOJTF-OIR). A graduate of West Point with a degree in Mathematical Sciences, he founded Onebrief to solve the inefficiencies he witnessed in traditional military staff workflows by digitizing the decision-making process.

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