Top Tech Startups in Europe in 2026

Wunderkind is a leading performance marketing engine that delivers tailored experiences at scale. Digital businesses use Wunderkind to remember who users are better than ever before, allowing them to deliver high-performing, one-to-one messages on websites, through emails and texts, and in ads at a scale that’s not otherwise possible. Wunderkind drives $1.2 billion dollars annually in directly attributable revenue for top eCommerce brands like Uniqlo, Sonos and HelloFresh, often ranking as a top-3 revenue channel in their own analytics. Wunderkind is maniacally obsessed with ROI and aims to be the infrastructural interface between individuals and brands in a world where consumers choose what they want, from whom, and when. Learn more at wunderkind.co.

Sardine helps fintech, crypto, and web3 companies "move money confidently" by developing fraud, compliance, and payment infrastructure. With Sardine, builders can focus on growing their business instead of spending time, fighting against fraudsters. We're growing incredibly fast and powering over 100 customers around the world like Brex, MoonPay, Bakkt, Luno, Transak, Chippercash, Candy Digital, Metamask, Brave, and RelayFi.

Hey, we’re Deepgram! We’re an AI speech platform whose mission is to make every voice heard and understood. Our end-to-end deep neural network is revolutionizing the speech-to-text market and taking on the big guys. We’re redefining what companies can do with voice by offering a platform with AI architectural advantage, not legacy tech retrofitted with AI. Deepgram delivers highly accurate, actually usable transcription, right out of the box – or you can train a model for even greater accuracy on the unique words that matter to you. ✅ Live-stream or pre-recorded ✅ On-prem or in the cloud ✅ Scalable and affordable ✅ Dozens of languages and use case models ✅ Features like diarization, summarization, language/topic detection, and more. We’ve raised over $86 million and have been recognized as an Inc. Best Workplace (2021 and 2022), a Forbes Top 50 AI Company to Watch (2021), and a CB Insights Top 100 AI Startup (2021), among others. Come join our revolution to unlock the power of voice technology for everyone. We want to hear what you’ve got to say! An NVIDIA partner and Y Combinator company

Oklo is a California-based company developing clean energy plants to provide emission-free, reliable, and affordable energy using advanced fission. Oklo is a fast-growing startup with a history of reliable funding and milestones for more than 5 years. Oklo’s first product is a microgrid scale powerhouse. The powerhouse can produce clean energy for decades without needing to refuel, and also has the capability to turn nuclear waste into clean energy. Oklo received a Site Use Permit from the U.S Department of Energy, demonstrated fabrication of its fuel, was awarded fuel from the Idaho National Laboratory, and submitted the first accepted advanced fission license application to the regulator. Oklo has been featured in Popular Mechanics, Wired, Architectural Digest, Hyperallergic, POWER Magazine, and has been the subject of a Harvard Business School case, and was featured in the documentary The New Fire, among many other features.

C3.ai is a leading enterprise AI software provider for accelerating digital transformation. The proven C3 AI Suite provides the comprehensive services to build enterprise scale AI applications 40x to 100x faster than alternative approaches. The core of the C3 AI Suite is a revolutionary, extensible, model-driven abstraction layer that dramatically enhances data scientist and application developer productivity. The C3 AI Suite supports any value chain in any industry with pre-built, configurable, high-value AI applications for predictive maintenance, fraud detection, sensor network health, supply network optimization, energy management, anti-money laundering, and customer engagement. c3.ai

About Eight Sleep Eight Sleep is building an end-to-end predictive health platform, starting with the one place humans spend a third of their lives - the bed. Founded in 2014, we began by reimagining sleep as a trainable input to health and performance. Our flagship product, the Pod, turns the bed into an always-on lab, combining advanced temperature regulation, biometric sensing, and AI to optimize recovery, improve performance, and surface early signals for preventative action. Today, Eight Sleep has analyzed 1B+ hours of sleep data, serves customers across 30+ countries, and has recently raised an additional $100M to expand beyond sleep optimization into broader health prediction and intervention. Backed by leading investors including Founders Fund, Y Combinator, Valor Equity Partners, and HSG, we’re building the foundation for how people understand and improve their health every day - passively, continuously, and proactively. Learn more at eightsleep.com

Augury is building a world where people can always rely on the machines that matter. Augury supports its partners by enabling Digital Transformation through superior insights into the health and performance of the machines they use to make products, deliver services and improve lives. To learn more about Augury’s machine health solutions, visit augury.com.

Faire was founded in 2017 on the belief that the future is local. We’re helping independent entrepreneurs chase their dreams by building an online wholesale marketplace that connects local retailers with thousands of emerging and established brands. Our platform empowers independent retailers with the advantages of big-box terms, and helps independent makers build and simplify their wholesale business.

Rocket Money (formerly known as Truebill) is a leading personal finance app with a mission to empower people to live their best financial lives. We offer our 3.4 million members a unique understanding of their finances and a suite of valuable services that save both time and money -- ultimately giving them a leg up on their financial journey. Members can manage their subscriptions, lower their bills, build budgets and automatically set aside money to reach their savings goals. We've saved our members $245 million and counting. In late 2021, we were acquired by Rocket Companies (NYSE: RKT) for $1.275 billion with the goal of creating a centralized destination for consumers to manage their entire financial lives. As paying premium members more than doubled year-over-year in July 2022, we announced our new name, Rocket Money. At Rocket Money, we believe we can do our best work operating as a team. We are committed to using our experience at work to support our own and each other's personal growth journeys. If you are someone who enjoys solving hard problems, likes collaborating and is passionate about our mission; let's talk. We hire from all industries and look for a diverse set of experiences in our talent. To see our open roles go to rocketmoney.com/careers. We're founded by successful veteran entrepreneurs and are backed by YCombinator, Social Capital, and other great investors.

TOGGLE helps all investors make better decisions - crunching a vast universe of data to tell you exactly what you need to know. Think of TOGGLE as Waze for investing: you're in charge and can rely on TOGGLE to alert you when there is a pothole coming up, or traffic jam forming ahead of you. "Toggle is the Bloomberg Terminal for retail investors...just as Schwab, Interactive Brokers, and now newcomers like Robinhood and Betterment have disrupted market access for retail investors, Toggle is aiming to disrupt investment analysis." - Business Insider We are an experienced team of technology and finance professionals who came together to build useful tools we actually wanted to use.