Who founded KugelAudio?

KugelAudio was founded by Viktor Presber, Kajo Kratzenstein in 2025.

Who are KugelAudio's investors?

KugelAudio's investors include Rebel Fund, Y Combinator, Repeat VC.

Where is KugelAudio headquartered?

KugelAudio is headquartered in San Francisco, US.

KugelAudio

YC X26

San Francisco, US · Founded 2025 · 4 employees · Hiring · 3 known investors

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Kugel Audio develops text-to-speech software with natural voices in 26+ languages, built and hosted in the EU with GDPR compliance. The service targets developers building voice-enabled applications and offers sub-50ms latency with streaming integration.

AI & Machine Learning Data & Infrastructure Developer Tools Enterprise Software SaaSGermanyEurope

Founders & leadership· Y Combinator alumni (X26)

KugelAudio was founded in 2025 by Viktor Presber and Kajo Kratzenstein.

Viktor Presber Co-FounderHe previously co-founded full-house.io, which reached $300K ARR and served enterprise clients including Siemens Energy, Hitachi Rail, and Barilla, and co-founded Sagemode, which established partnerships with esports teams.

Kajo Kratzenstein Co-FounderHe previously served as CTO at Sagemode, where he led development of an in-game AI coaching product, and built a production aneurysm detection model at Floy GmbH. He holds a BSc and MA in Computer Science from Hasso Plattner Institute.

Investors · 3

Rebel Fundlisted by Rebel FundSan Francisco · $100K – $5M

How we know: Y Combinator's founder network · rebelfund.vc · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Repeat VCreportedSt Helier

How we know: Y Combinator's founder network · Not right? Tell us

Legal entities · 1

corporate structure

KugelAudio Inc.

In the news

KugelAudio: A multilingual voice AI model you can run in your own cluster.ycombinator.com · May 2026

Frequently asked questions

What does KugelAudio do?: Kugel Audio develops text-to-speech software with natural voices in 26+ languages, built and hosted in the EU with GDPR compliance. The service targets developers building voice-enabled applications and offers sub-50ms latency with streaming integration.
Who founded KugelAudio?: KugelAudio was founded by Viktor Presber, Kajo Kratzenstein in 2025.
Who are KugelAudio's investors?: KugelAudio's investors include Rebel Fund, Y Combinator, Repeat VC.
Where is KugelAudio headquartered?: KugelAudio is headquartered in San Francisco, US.