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Kardi AI finds its rhythm with record €5.3m Series A

PublishedNovember 12, 2026

Kardi AI has raised €5.3 million in a Series A funding round, marking the largest investment round to date for a Czech medtech startup.

Team says that four years ago, Kardi Ai was just an idea and a group of people who believed that heart rhythm monitoring could be done differently.

“Today, our company is valued at €23 million, representing nearly 1,300% growth since 2022. It’s a milestone we could only dream of when we started. This investment will help us accelerate our expansion across Europe and Asia, bringing long-term ECG monitoring to new markets. It will also support the development and clinical validation of AI models designed to identify an increased risk of cardiac arrhythmias before they manifest, with the goal of making this technology accessible to more people worldwide,” the company said in its announcement.

We are gradually moving beyond detecting heart rhythm disorders towards technology capable of identifying an increased risk before arrhythmia manifests.

Vlastimil Hrabal, Co-founder and CEO of Kardi Ai

They thank Callisto Health for leading this funding round, and to Seed Starter Čs, Seed Starter Slovenskej sporiteľne, BrightCap Ventures, Purple Ventures, DEPO Ventures and Garage Angels for support. Kardi AI is also greatful to their earlier investors Soulmates Ventures, cleverage.vc and LUMUS Investment Collective for believing in Kardi Ai long before this milestone.

What’s next?

  • Expansion across Europe and Asia.
  • Development of AI models to predict the risk of cardiac arrhythmias.
  • Clinical validation at a global scale and across patient demographics.

How did it begin?

It all started as a casual discussion over a glass of wine, when neighbors Stephen Burke, a native of Vermont, USA, settled in the Czech Republic, and cardiologist Tomáš Skála discussed the difficulty, effort and financial burden of monitoring the condition of people suffering from heart problems.

From this personal need to solve the complexity of monitoring heart diseases and the inflexibility of the current system, the idea arose to create a medical device that fits in the palm of your hand, is comfortable to wear and continously evaluates ECG records using artificial intelligence.

A device that enables long-term ECG monitoring from the comfort of your home will shorten the path to an early diagnosis and save time for doctors.

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