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June 23, 2025

The European startups that made it to Y Combinator’s spring batch

Just nine of the 143 companies are European

Silicon Valley’s Y Combinator is one of the few startup accelerators European VCs say is worth its salt. 

That said, just nine of the 143 startups in YC’s first-ever spring batch are European — though that’s proportionally up from 11 of the 223 companies in the summer 2024 intake. A total of 22 companies have one or more European founders, with France being the best represented country from the continent.

Meanwhile, 130 startups report working on AI — including 72 developing AI agents — alongside a handful of companies building robots for manufacturing and defence.

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YC’s Spring 2025 cohort began in March at the accelerator’s San Francisco campus and runs until the end of June. Startups receive mentorship from notable YC partners such as Monzo founder Tom Blomfield and Gmail creator Paul Buchheit. Every company accepted into the programme gets a minimum of $500k in funding.

Here is the list of European startups that have publicly announced their participation in the spring batch, or are listed as Europe-based on YC’s website.

Moby Analytics

HQ: Paris

Moby Analytics provides a platform for financial auditors to build and deploy AI agents to automate workflows. 

Powermatrix

HQ: Cambridge, England

Powermatrix produces efficient power supply systems for emerging technologies like GPUs, data centres and drones. It has built a patented circuit architecture which it claims can reduce energy loss by up to 50%.

Lucis

HQ: Paris

Lucis provides a regular blood testing service to provide patients with personalised health scores and lifestyle guidance.

Bloom

HQ: Zurich

Bloom allows users to quickly build and share mobile apps without needing to know how to code.

Cubic

HQ: London

Cubic is a platform for developers which automates the review of code — including the identification of bugs and suggestion of fixes.

Qfex

HQ: London

Qfex is a regulated global stock exchange for traditional financial markets, available anytime of day.

Clidey

HQ: London 

Clidey is building Docucod, a tool for software developers to automatically generate and maintain documentation about their projects. 

Nao Labs 

HQ: Paris

Nao Labs is a code editor built for data workflows. Users — usually members of data teams or software developers — gain access to an AI agent which has data-specific tools so code can be written and deployed without sacrificing data quality. 

Plexe AI

HQ: London

Plexe is an AI agent which builds and deploys predictive machine learning models from users’ natural language description. 

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While some startups may be listed as US-based during Y Combinator, many founders temporarily relocate for the programme — here's a look at the companies whose founders originally come from across Europe:

France:

  • Nomi
  • Lucis
  • Vybe
  • Nao Labs
  • Flott HQ
  • Kaelio
  • Blaxel
  • Moby Analytics
  • Proby

UK:

  • Crimson
  • Leeroo
  • Clarm
  • Parsewise
  • Clidey
  • Throxy

Switzerland:

  • Bloom
  • Switzerland
  • Clarm
  • Parsewise

Germany:

  • Mesmer
  • The Robot Learning Company
  • Crimson
  • Alzonova

Netherlands:

  • Airweave
  • Bloom

Sweden:

  • Vesence

Spain:

  • Cua

Italy:

  • Cua

Maya Dharampal-Hornby

Maya Dharampal-Hornby is Sifted's editorial assistant and producer of Startup Europe — The Sifted Podcast .