Antti Karjalainen, Founder of Sema4.ai

About Antti Karjalainen

Antti Karjalainen is the founder of Sema4.ai. Sema4.ai operates in AI Infrastructure and is based in Atlanta, GA. Sema4.ai has raised $56M, latest Series A $25M (2025). Backers on record include Kevin Harvey, Vaneeta Varma, Benchmark, Mayfield Fund.

Antti Karjalainen at a glance

Company

Sema4.ai

Industry

AI Infrastructure

Location

Atlanta, GA

Total raised

$56M

Investors on record

Kevin Harvey, Vaneeta Varma, Benchmark, Mayfield Fund

Frequently asked about Antti Karjalainen

Who is Antti Karjalainen?

Antti Karjalainen is the founder of Sema4.ai. Full profile, funding history and background on StartupFundraising.com.

What company did Antti Karjalainen found?

Antti Karjalainen founded Sema4.ai, a AI Infrastructure company based in Atlanta, GA.

How do I contact Antti Karjalainen?

Verified contact routes including LinkedIn, background and funding history for Antti Karjalainen are available on the StartupFundraising.com founder profile.

This founder profile draws on disclosed rounds, filings and investor records in the StartupFundraising database and is updated as new funding is recorded. Founders raising now use profiles like this one to study comparable AI Infrastructure journeys in Atlanta — who backed them, at what stage, and how much they raised.

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