Washington, DC-area startups raised $5.4 billion in venture funding across 323 deals in 2025, according to PitchBook and NVCA data reported by Technical.ly. That put the region close to its decade-high venture capital peak, even as deal count fell roughly 25% from four years earlier.
The region's AI startups reflect what sits nearby: federal agencies, the military, and the intelligence community. Defense and cyber companies account for a large share of the fastest hiring, but the list also includes freight intelligence, email security, wealth management, IT support, and agricultural commodity forecasting. For the national view, see Landbase's ranking of AI startups adding headcount fastest.
This list ranks venture-backed AI startups headquartered in the Washington, DC metro area, including the District, Arlington, Northern Virginia, and suburban Maryland, by 12-month headcount growth measured in Landbase data, then verifies each company's funding and operating evidence against public sources.
How the companies were selected
The starting pool was AI-native startups with a headquarters address in Washington, DC, Arlington, Alexandria, Northern Virginia, or Montgomery County, Maryland, founded in 2019 or later, with at least 30 employees.
Every company on the list had to meet four criteria:
- Headquartered in the Washington, DC metro, confirmed by company or press descriptions
- AI-native, with AI at the core of the product rather than added to a legacy offering
- Venture-backed, with at least one disclosed institutional round
- Positive 12-month headcount growth in Landbase data, used as the ranking order
Headcount growth is calculated from professional-profile data and can differ from company-reported figures, particularly for companies with contractors, cleared staff who limit their public profiles, or distributed teams. Funding, valuation, and revenue figures below come from company announcements and press coverage rather than headcount data. Funding alone does not establish growth, so it is treated as one of several company buying signals.
1) Quartermaster
CEO: Neil Sobin
Latest round: $140 million Series B ($100 million equity plus $40 million venture debt), September 2026
12-month headcount growth: +600%
Category: Maritime data and surveillance
What Quartermaster builds
Quartermaster, based in Arlington, Virginia, builds SmartMast, a weather-hardened package of cameras and radios mounted on working vessels that relays real-time maritime data.
Latest growth evidence
At the time of its Series B, Quartermaster reported more than 650 vessels equipped with SmartMast across 25 countries and more than 800 units shipped. TechCrunch reported that the Insight-led round was preempted about four months after its Series A.
Recent funding
Insight Partners led the $100 million equity portion, with Overmatch Ventures joining and First Round Capital, Quiet Capital participating. Stifel provided the $40 million debt facility. The round followed a $43 million Series A in May 2026 co-led by First Round and Quiet Capital.
Why it matters
Quartermaster is building a proprietary sensor network rather than selling software alone. Its data is aimed at insurers, fleets, energy operators, and governments that lack visibility into activity at sea.
2) Twenty
CEO: Joe Lin
Latest round: $30 million Series B extension, July 2026
12-month headcount growth: +354%
Category: AI cyber operations
What Twenty builds
Twenty builds offensive cyber tools for the U.S. military and intelligence community, including AI agents and systems that identify vulnerabilities in adversary networks and carry out operations at what the company calls machine speed.
Latest growth evidence
Twenty's valuation reached $1 billion with its June 2026 Series B and rose to $1.2 billion with a Khosla-led extension about a month later. The company has reportedly secured contracts worth up to $12.6 million with U.S. Cyber Command and a research agreement with the Navy.
Recent funding
Accel led the roughly $100 million Series B, with Point72 Ventures, Friends & Family Capital, and Caffeinated Capital participating. Khosla Ventures added $30 million in July. Twenty previously raised a $38 million Series A led by Caffeinated Capital when it emerged from stealth in 2025, for total funding of about $168 million.
Why it matters
Twenty is one of the first venture-backed companies built specifically for offensive cyber operations.
3) Rune Technologies
CEO: David Tuttle
Latest round: $24 million Series A, July 2025
12-month headcount growth: +156%
Category: AI military logistics
What Rune Technologies builds
Rune, headquartered in Arlington, builds TyrOS, an AI-enabled predictive software platform for military logistics in contested environments that anticipates shortages even when communications are disrupted.
Latest growth evidence
In June 2026, Rune received a five-year, $99 million IDIQ contract from the U.S. Army, giving Army and other Department of War organizations a direct path to buy TyrOS through task orders.
Recent funding
Human Capital led the $24 million Series A. It followed a $6.2 million seed round led by Andreessen Horowitz in February 2025.
Why it matters
Rune shows how quickly a defense software startup can move from pilots to a program-scale contract vehicle, a step that often takes years.
4) GenLogs
CEO: Ryan Joyce
Latest round: $60 million Series B, February 2026
12-month headcount growth: +124%
Category: Freight and truck intelligence
What GenLogs builds
GenLogs analyzes data from a national network of roadside sensors that track truck activity. Its platform is used to recover stolen cargo, match shippers with carriers, vet freight partners, and support law enforcement investigations. The company was founded in 2023 by Ryan Joyce, a former CIA officer, and is described in press coverage as based in Arlington and Washington, DC.
Latest growth evidence
At the time of its Series B, GenLogs said it served about 100 insurers, freight brokers, and government agencies. Technical.ly reported that the company had just made its 80th hire, was targeting about 150 employees by the end of 2026.
Recent funding
Battery Ventures led the $60 million Series B. GenLogs previously raised a seed round of more than $6 million and a $14.6 million Series A led by Venrock and HOF Capital, for total funding of about $81 million.
Why it matters
Cargo theft and freight fraud have made carrier verification a security problem. GenLogs applies intelligence-community methods to a commercial logistics market.
5) Sublime Security
CEO: Josh Kamdjou
Latest round: $150 million Series C, October 2025
12-month headcount growth: +81%
Category: AI email security
What Sublime Security builds
Sublime provides an agentic email security platform. Its Autonomous Security Analyst investigates and triages threats, and its Autonomous Detection Engineer deploys tailored defenses against new attack patterns.
Latest growth evidence
Sublime reported 100% growth in annual recurring revenue in the first half of 2025 and said it had retained all of its enterprise customers since inception.
Recent funding
Georgian led the $150 million Series C. It followed a $60 million round in December 2024 and a $20 million Series A led by Index Ventures. Total funding is more than $240 million.
Why it matters
Email remains the most common entry point for attacks. Sublime is one of the clearest examples of security vendors replacing rule maintenance with AI agents that write and tune detections.
6) Range
CEO: Fahad Hassan
Latest round: $60 million Series C, November 2025
12-month headcount growth: +77%
Category: AI wealth management
What Range builds
Range, headquartered in McLean, Virginia, provides AI-powered wealth management and financial planning for high-earning households. Its AI assistant, Rai, handles complex planning questions.
Latest growth evidence
Range reported 300% year-over-year revenue growth, more than 5,000 customers across all 50 states, $400 million in assets under management, and $9.5 billion in assets under advisement.
Recent funding
Scale Venture Partners led the $60 million Series C, with Gradient Ventures, Cathay Innovation, and new investors including 53 Stations participating. Total funding is more than $100 million.
Why it matters
Range is applying AI to a service traditionally priced on assets under management. Its fixed-fee model competes directly with human advisory practices.
7) Seekr
CEO: Pat Condo
Latest round: $100 million round, initial close June 2025
12-month headcount growth: +65%
Category: Enterprise and sovereign AI platform
What Seekr builds
Seekr, based in Reston, Virginia, provides SeekrFlow, a platform for building, training, validating, and deploying AI models and agents, with an emphasis on explainability.
Latest growth evidence
The U.S. Army selected Seekr AI agents for missile defense cyber resilience in January 2026, and Seekr announced customer selections from Murex and Anderson Merchandisers later in the year. In October 2026, it opened a London office to serve European demand for sovereign AI.
Recent funding
Danu Venture Group and AMD Ventures led the $100 million round, which was reported at a $1.2 billion valuation.
Why it matters
Seekr represents a Washington-area approach to enterprise AI that leads with auditability and government certification before commercial expansion.
8) Fixify
CEO: Matt Peters
Latest round: $25 million Series A, October 2024
12-month headcount growth: +58%
Category: AI-assisted IT help desk
What Fixify builds
Fixify, headquartered in Arlington, provides an IT help desk service that pairs AI with human analysts. Its software categorizes tickets in systems such as Jira and ServiceNow and suggests root causes for analysts to resolve.
Latest growth evidence
Fixify launched in 2023 and had 41 employees and 15 customers at the time of its Series A, according to TechCrunch.
Recent funding
Costanoa Ventures, Decibel Partners, and Paladin Capital Group co-led the $25 million Series A, with Scale Venture Partners participating. Total funding is $32 million.
Why it matters
Fixify is part of a wider shift toward AI-enabled services, in which software handles triage and diagnosis while people deliver the outcome.
9) Andesite
CEO: Brian Carbaugh
Latest round: $23 million second seed tranche, February 2025
12-month headcount growth: +22%
Category: AI security operations
What Andesite builds
Andesite, headquartered in McLean, Virginia, builds what it calls a bionic SOC, a human-AI collaboration platform for security operations teams. The product unifies security data and records the evidence behind machine-assisted decisions.
Latest growth evidence
Andesite said its second tranche was triggered by technology, customer, and revenue milestones reached ahead of schedule, and announced general availability of its platform at the same time.
Recent funding
General Catalyst and Red Cell Partners provided the $23 million tranche, following a $15.25 million initial round they co-led. Total funding is $38.25 million.
Why it matters
Andesite and Sublime both target analyst workload, but Andesite focuses on the full security operations center and on buyers that require auditable AI decisions.
10) Helios AI
CEO: Francisco Martin-Rayo
Latest round: $4.7 million seed, September 2025
12-month headcount growth: +14%
Category: AI commodity and supply chain forecasting
What Helios AI builds
Helios AI, based in Tysons, Virginia, predicts soft commodity prices and supply chain disruptions by analyzing climate, economic, and political risk.
Latest growth evidence
Helios said its coverage spans more than 75 agricultural commodities, more than 2,500 price series, and almost 90 countries. Alongside its seed round, the company launched Helios Horizon starting at $299 per month.
Recent funding
Collide Capital led the $4.7 million seed. Helios previously raised $1.85 million in pre-seed funding led by Supply Change Capital.
Why it matters
Helios is the smallest company on the list by funding, and it shows that the region's AI activity extends beyond defense into food and agriculture markets.
What the Washington DC AI startup market shows
Several patterns stand out.
First, national security is the region's defining customer. Twenty, Rune, Andesite, and Seekr sell directly to the military or intelligence community, and Quartermaster and GenLogs apply surveillance and intelligence methods to commercial markets. Several founders and executives came from the CIA or the military.
Second, security is a second cluster. Twenty works on offensive cyber operations, Sublime on email defense, and Andesite on security operations centers.
Third, funding is concentrated. Quartermaster, Twenty, and Sublime each raised $130 million or more in their latest rounds, while Helios and Fixify raised far smaller rounds.
For GTM teams, these companies are hiring quickly, adding government and enterprise customers, and building new functions. That combination is more useful when paired with hiring, leadership, technology, and data enrichment signals than when funding is viewed on its own. Teams researching specific categories can compare this list with Landbase's ranking of AI security startups hiring fastest and its list of AI logistics startups hiring fastest, and with the companion list of Boston AI startups hiring fastest. The full city-by-city comparison is in Landbase's ranking of AI startups hiring fastest by city.
How Landbase supports Washington DC AI startup account research
The ranking in this article was built with Landbase. A natural-language search identified AI startups headquartered in Washington, DC, Virginia, and Maryland, an enrichment step added founding year, headquarters city, and 12-month headcount change, and the results were filtered and sorted into a structured dataset.
Landbase's web and CLI interfaces access the same account, datasets, and saved work.
For more complex requirements, the Advanced Dataset Creator supports filters, calculations, and custom output fields.
Landbase's data infrastructure includes more than 800 million contacts and more than 40 million companies across more than 1,500 fields, with enrichment from more than 20 providers.
A Washington-area workflow could, for example, identify AI startups headquartered in DC, Northern Virginia, or Montgomery County that sell to defense or federal buyers, raised a Series A or later in the past 18 months, grew headcount by more than 50%, and recently hired a head of commercial sales.
The Landbase CLI setup supports these workflows from a standard terminal and from AI coding environments including Claude Code and Codex.
Frequently Asked Questions
Which AI startups in Washington, DC are growing fastest?
In Landbase's 12-month headcount data, the fastest-growing venture-backed AI startups headquartered in the Washington, DC metro that met this list's criteria were Quartermaster, Twenty, Rune Technologies, GenLogs, Sublime Security, Range, Seekr, Fixify, Andesite, and Helios AI.
Which Washington DC AI startup grew headcount fastest?
Quartermaster recorded the highest 12-month headcount growth among companies that met this list's criteria, at about 600%. The Arlington company raised a $140 million Series B, including $40 million in venture debt, in September 2026, four months after its Series A.
Why is the Washington DC area attracting AI startups?
The region is close to its largest buyers, including the Department of War, the intelligence community, and federal civilian agencies. It also has a large pool of cleared engineers and former government operators, and defense, cyber, and secure data companies draw a large share of local venture funding.
Does headcount growth mean a Washington DC AI startup is growing quickly?
Not on its own. Headcount data is based on professional profiles and can differ from company-reported figures, particularly for defense and intelligence companies whose staff may keep low public profiles. This list therefore pairs headcount growth with disclosed funding, revenue, customer, and contract evidence wherever it is available.
How can GTM teams find fast-growing Washington DC AI startups?
Teams can start with a geography and category definition, such as AI-native startups headquartered in DC, Northern Virginia, or suburban Maryland, and then filter by headcount growth, funding stage, recent rounds, target buyer, and hiring activity. Landbase can combine these criteria into reusable datasets and return company and contact information through web and CLI workflows.
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