Swedish AI startups raised €454 million between January and October 2025, more than three times the €124 million raised in all of 2024, according to Alice Labs' State of AI Sweden report. The same report finds that Stockholm is home to more than half of Sweden's AI startups.
Much of that capital has gone to a small group of Stockholm companies that are hiring quickly and expanding abroad. This post is part of Landbase's broader ranking of AI startups adding headcount fastest.
This list ranks venture-backed, AI-native startups headquartered in Stockholm by 12-month headcount growth in Landbase data, then checks each company's funding and operating evidence against public sources.
How the companies were selected
The starting pool was software and AI companies headquartered in the Stockholm area, founded in 2019 or later, with at least 30 employees.
Every company on the list had to meet four criteria:
- Headquartered in Stockholm, confirmed in company or press sources, even where the company also operates offices in the United States or United Kingdom
- AI-native, meaning AI is central to the product rather than an added feature
- 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 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) Endra
CEO: Niklas Lindgren
Latest round: $50 million Series A, June 2026
12-month headcount growth: +567%
Category: AI for building engineering (MEP design)
What Endra builds
Endra builds software for mechanical, electrical, and plumbing (MEP) engineering firms. Its platform combines spatial AI, optimization, simulation, and physics-based modeling to generate building system designs.
The company says it aims to automate more than 80% of MEP design work.
Latest growth evidence
Endra reported raising about $74 million within 12 months, and it raised a $50 million Series A in June 2026 to expand outside Sweden. It has since opened offices in London, New York, and San Francisco and planned an electrical design module for release in September 2026.
Recent funding
Andreessen Horowitz led the Series A, with Norrsken VC and Notion Capital participating. It followed a pre-seed of about €3 million led by Norrsken VC in 2025 and a $20 million seed led by Notion Capital in December 2025, which Lindgren described as the largest seed round raised by a Swedish company.
Why it matters
Endra shows Stockholm founders moving AI into engineering work tied to physical construction, where design timelines often hold up construction projects.
2) Legora
CEO: Max Junestrand
Latest round: $550 million Series E, October 2026
12-month headcount growth: +452%
Category: Legal AI
What Legora builds
Legora builds a collaborative AI platform for lawyers that handles research, document review, drafting, and multi-step legal workflows.
Founded in Stockholm in 2023 by Max Junestrand and Sigge Labor, originally under the name Leya, it sells to law firms and in-house legal teams.
Latest growth evidence
When it announced its Series E on October 21, 2026, Legora said it had passed $200 million in annual recurring revenue. It reported more than 2,400 law firm and in-house customers and more than 140,000 legal professionals using the platform across more than 80 markets.
Recent funding
Atreides Management led the $550 million Series E at a reported $8.8 billion post-money valuation. Seven months earlier, Legora raised a $550 million Series D led by Accel at a $5.55 billion valuation, followed by a $50 million extension in April 2026 that included NVIDIA and Atlassian.
Why it matters
Legora is the clearest evidence that a Stockholm vertical AI company can compete globally at enterprise scale against US-based rivals.
3) Lovable
CEO: Anton Osika
Latest round: $400 million, August 2026
12-month headcount growth: +228%
Category: AI app builder
What Lovable builds
Lovable lets users build web applications and websites by describing them in natural language. The platform generates the code, connects back-end services, and deploys the result.
Anton Osika and Fabian Hedin founded the company in 2023.
Latest growth evidence
Lovable reported reaching $500 million in annualized recurring revenue in June 2026. When it raised $400 million at a $13.3 billion valuation in August 2026, the company said its run rate was on track to reach nearly $600 million by the end of that month.
Recent funding
Menlo Ventures and the Scaleup Europe Fund co-led the August 2026 round, with Balderton Capital and Tencent among new investors. It followed a $330 million Series B at a $6.6 billion valuation in December 2025 and a $200 million Series A led by Accel in 2025.
Why it matters
Lovable's valuation doubled in about eight months. Two other companies on this list count it as a customer.
4) Intric
CEO: David Wallén
Latest round: €3.8 million pre-seed, February 2026
12-month headcount growth: +147%
Category: Sovereign AI platform for the public sector
What Intric builds
Intric builds a secure AI platform that lets public agencies and regulated organizations build, share, and deploy AI agents and assistants while keeping data under their own control.
Latest growth evidence
Intric reported more than 60 customer organizations across the Nordics and Germany, running more than 5,000 AI agents and assistants. It has since reported a procurement win with the Swedish Government Offices and a city-wide pilot in Neckarsulm, Germany.
Recent funding
byFounders led the €3.8 million pre-seed, described as Intric's first institutional round. Former Volvo chairman Carl-Henric Svanberg also invested.
Why it matters
Intric reflects growing European public-sector demand for AI systems that keep data and infrastructure within national or EU control.
5) Encube
CEO: Hugo Nordell
Latest round: $23 million, October 2025
12-month headcount growth: +75%
Category: AI for hardware engineering
What Encube builds
Encube builds an AI-driven collaboration platform for product and manufacturing engineers. It uses manufacturing data to flag designs that would add cost or complexity in production.
Hugo Nordell, a former Sandvik and Aker executive, and Johnny Bigert, who previously worked at Skype and Klarna, founded the company in late 2021.
Latest growth evidence
Encube came out of stealth in October 2025 with customers including Volvo Group, RUAG's Beyond Gravity, and Cognibotics. Partners reported production cost savings of 20% to 30%.
Recent funding
Kinnevik, Promus Ventures, and Inventure backed the $23 million launch round, reported in euro terms as about €19.7 million.
Why it matters
Encube builds on Sweden's industrial base, selling to manufacturers whose engineering teams have historically been served by CAD and PLM incumbents.
6) Rerun
CEO: Nikolaus West
Latest round: $17 million seed, March 2025
12-month headcount growth: +39%
Category: Data infrastructure for physical AI
What Rerun builds
Rerun builds an open-source framework and commercial data layer for physical AI teams working on robots, drones, and autonomous vehicles. It handles multimodal data such as video streams, 3D scenes, and tensors.
Nikolaus West, Emil Ernerfeldt, and Moritz Schiebold founded the company in 2022.
Latest growth evidence
Rerun said its open-source framework had been adopted by teams at Meta, Google, Hugging Face's LeRobot project, and Unitree in their own open-source work.
Recent funding
Point Nine led the $17 million seed, with Sunflower Capital and existing investors Costanoa Ventures and Seedcamp participating. Total funding was reported at $20.2 million.
Why it matters
Rerun gives Stockholm a position in physical AI tooling, a category where open-source adoption often comes before commercial contracts.
7) Atlar
CEO: Joel Nordström
Latest round: SEK 90 million, April 2024
12-month headcount growth: +28%
Category: AI treasury management
What Atlar builds
Atlar builds a treasury platform for finance teams. It connects bank accounts to a single system, and AI agents review payments, reconcile transactions, and generate cash forecasts.
The company describes itself as an AI-native treasury platform.
Latest growth evidence
In April 2026, Atlar became the first company to use J.P. Morgan Payments' new treasury API, with Lovable as the first joint customer. Atlar names GetYourGuide, Lovable, Trustly, and Mangopay among its customers.
Recent funding
Nordic9 reported in April 2024 that Atlar was raising SEK 90 million (about $8.6 million) from investors including Index Ventures and La Famiglia. Index Ventures had led an earlier seed round in 2022. The company also lists General Catalyst as a backer.
Why it matters
Atlar shows Stockholm's fintech base adapting to AI agents, with finance automation sold to fast-growing software companies.
8) QA.tech
CEO: Daniel Mauno Pettersson
Latest round: €3 million seed, May 2024
12-month headcount growth: +24%
Category: AI software testing
What QA.tech builds
QA.tech builds autonomous AI agents that test web and mobile applications. Teams describe goals in plain language, and the agents run end-to-end, regression, exploratory, and pull-request tests without scripts.
Latest growth evidence
QA.tech had eleven employees when it raised its €3 million seed in 2024. Its website now lists Lovable, AstraZeneca, Upsales, and Synthesia among customers, and an Upsales case study describes replacing 320 hours of manual testing with agents.
Recent funding
British venture firm PROfounders led the seed, with Curiosity and byFounders participating. It followed a €1 million pre-seed.
Why it matters
As AI coding tools speed up how much code teams ship, QA.tech targets the testing work that has to keep pace.
9) Aloi
CEO: Johan Häger
Latest round: €6.1 million (about $7 million), August 2026
12-month headcount growth: +23%
Category: Legal AI
What Aloi builds
Aloi builds software that helps law firms reuse knowledge from past matters, including how earlier risks were assessed, negotiated, and mitigated. It plugs into the AI tools law firms already use.
Häger was previously a partner at the Nordic law firm Roschier.
Latest growth evidence
Aloi reported clients including Roschier, Avance, and Wiersholm and is active in the Nordics, Germany, the Netherlands, and the UK. The company said the United States is its next priority market and that it plans a larger Series A later in 2026.
Recent funding
The August 2026 round came from an undisclosed European venture fund and existing investors. It followed a round of about €3 million in 2025. Klarna co-founder Victor Jacobsson is among its named angel investors.
Why it matters
Aloi is the second legal AI company on this list, which suggests Legora's growth is drawing talent and capital into the category in Stockholm.
10) Validio
CEO: Patrik Liu Tran
Latest round: $30 million Series A, March 2026
12-month headcount growth: +20%
Category: Agentic data management
What Validio builds
Validio builds an agentic data management platform that automates data observability, quality monitoring, lineage, and cataloging for enterprise data teams.
Patrik Liu Tran founded the company in 2019, which makes it the oldest company on this list.
Latest growth evidence
Validio reported that its annual recurring revenue grew 800% over the 12 months before its March 2026 Series A. Named customers include Nordea, Canva, and Truecaller.
Recent funding
Plural led the $30 million Series A, with existing investors Lakestar and J12 participating. Total funding was reported at $47 million.
Why it matters
Validio sells to enterprises whose AI deployments depend on reliable data, a need that tends to grow as AI moves into production.
What the Stockholm AI startup market shows
Several patterns repeat.
First, Stockholm's AI startups are mostly vertical and B2B. Legora and Aloi serve lawyers, Endra serves building engineers, Encube serves manufacturers, Atlar serves finance teams, and Intric serves public agencies. Lovable is the main horizontal product, and QA.tech and Validio sell to software and data teams.
Second, capital is concentrated. Legora and Lovable each raised rounds of $400 million or more in 2026, while most other companies on the list have raised less than $50 million in total. Endra is the main exception, with about $74 million raised in 12 months.
Third, the ecosystem is feeding itself. Lovable is a customer of both Atlar and QA.tech, Aloi's founder came from a Nordic law firm that is now its customer, and Klarna and Skype alumni appear among founders and angels. Local investors such as Norrsken VC, byFounders, and Kinnevik invest alongside US funds.
For GTM teams, these companies are hiring quickly and expanding into the US and UK. That combination is more useful when paired with hiring, leadership, technology, and data enrichment signals than when funding is viewed on its own. Teams comparing cities can review Landbase's ranking of AI startups hiring fastest by city and the list of Berlin AI startups hiring fastest. Category views are available in the rankings of legal AI startups hiring fastest and AI construction startups hiring fastest.
How Landbase supports Stockholm AI startup account research
The ranking in this article was built with Landbase. A natural-language search identified software and AI companies headquartered in Stockholm, 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 Stockholm workflow could, for example, identify AI startups headquartered in Sweden that raised a seed or Series A round in the past year, grew headcount by more than 50%, and recently opened a US office or hired a US sales leader.
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 Stockholm are growing fastest?
Based on 12-month headcount growth in Landbase data, the fastest-growing venture-backed AI startups headquartered in Stockholm include Endra, Legora, Lovable, Intric, and Encube, followed by Rerun, Atlar, QA.tech, Aloi, and Validio.
Which Stockholm AI startup grew headcount fastest?
Endra recorded the highest 12-month headcount growth among the companies that met this list's criteria, at more than 550%. Legora followed at more than 450%, and Lovable at more than 200%.
Why is Stockholm attracting AI startups and hiring?
Stockholm combines experienced software operators, including alumni of Klarna and Skype who appear among the founders on this list, with active local investors. Legora and Lovable have also drawn international capital to the city, and Swedish AI startup funding more than tripled in 2025.
Does headcount growth mean a Stockholm AI startup is growing quickly?
Not on its own. Headcount data can differ from company figures, and fast hiring does not guarantee revenue growth. This list therefore pairs headcount growth with disclosed funding, revenue, customer, and valuation evidence wherever it is available.
How can GTM teams find fast-growing AI startups in Stockholm?
Teams can start with a geography and category definition, 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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