Marc Andreessen

Also known as: Marc Andreessen (AI Investor)

Co-created Mosaic web browser (1993); founded Netscape (sold to AOL for $4.2B); co-founded Andreessen Horowitz managing $90B+ in venture capital; techno-optimist AI advocate opposing safety regulation

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Current Role

Co-founder and General Partner

Born

1971

Age ~55

Education

B.S. in Computer Science, University of Illinois at Urbana-Champaign

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Quick Assessment

Dimension	Assessment
Primary Role	Venture capitalist, co-founder of Andreessen Horowitz (a16z)
Historical Impact	Co-created Mosaic browser (1993), founded Netscape, pioneered commercial internet
Current Influence	Managing $90B+ in venture capital, major AI/crypto investor
AI Safety Position	Techno-optimist dismissive of existential risk, opposes alignment-focused slowdowns
Key Works	"Why AI Will Save the World" (2023), "Techno-Optimist Manifesto" (2023)
Net Worth	$1.9 billion (January 2025)

Key Links

Source	Link
Official Website	a16z.com
Wikipedia	en.wikipedia.org

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Facts

People

Role / TitleCo-founder and General Partner

Biographical

Notable ForCo-created Mosaic web browser (1993); founded Netscape (sold to AOL for $4.2B); co-founded Andreessen Horowitz managing $90B+ in venture capital; techno-optimist AI advocate opposing safety regulation

Birth Year1971

EducationB.S. in Computer Science, University of Illinois at Urbana-Champaign

Other

Political PositioningPublicly supported Republican candidates and endorsed Trump circa 2023-2024. This positioning, combined with the Techno-Optimist Manifesto, increased tensions between a16z and EA/AI safety communities.

Notable PublicationThe Techno-Optimist Manifesto

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