Marc Andreessen's IQ: 152
Marc Andreessen
Estimated IQ
152
Known For
Co-invented the web browser, co-founder of a16z venture capital
About Marc Andreessen
Marc Andreessen is the co-creator of Mosaic — the first widely used graphical web browser — which he built in 1993 as an undergraduate at the University of Illinois, and which transformed the internet from an academic tool into a global consumer medium. He subsequently co-founded Netscape, whose Navigator browser dominated the early web era and whose 1995 IPO launched the first internet boom. After Netscape was acquired by AOL, he co-founded Loudcloud (later Opsware), which pioneered cloud computing before the term existed. He is now co-founder and general partner at Andreessen Horowitz (a16z), one of Silicon Valley's most influential venture capital firms. His estimated IQ of 152 reflects his capacity for technological vision, his early recognition of paradigm shifts in computing, and his sustained ability to identify transformative technologies before they achieve mainstream recognition.
What an IQ of 152 Means
Andreessen's estimated IQ of 152 reflects high giftedness in technical and strategic domains, with a particular strength in pattern recognition across technology cycles. His essay 'Software Is Eating the World' (2011) articulated a thesis — that every industry would eventually be transformed by software companies — that has proven remarkably prescient and has become a touchstone of technology investment strategy. His subsequent intellectual output through his blog and podcast has been distinctive for its willingness to stake clear, controversial positions on technology, economics, and politics. His 2023 'Techno-Optimist Manifesto' provoked intense debate for its full-throated embrace of technological acceleration as humanity's primary moral imperative — reflecting an unusually systematized ideological framework for a venture capitalist.
How Marc Andreessen Compares
To understand where this falls on the IQ scale, see our complete IQ score ranges guide, or learn what IQ actually measures.
Famous IQ Comparison
| Person | Estimated IQ | Known For |
|---|---|---|
| Marc Andreessen | 152 | Co-invented the web browser, co-founder of a16z venture capital |
| Albert Einstein | 160 | Theory of Relativity, Nobel Prize in Physics |
| Stephen Hawking | 160 | Black hole radiation, A Brief History of Time |
| Elon Musk | 150–155 | Tesla, SpaceX, CEO and entrepreneur |
| Nikola Tesla | 160–200 | AC electricity, Tesla coil, inventor |
| Bill Gates | 150–160 | Microsoft co-founder, philanthropist |
| Jeff Bezos | 145–155 | Amazon founder, Blue Origin, richest person |
See the complete famous IQ list or check what an IQ of 152 means.
Frequently Asked Questions
What is Marc Andreessen's IQ?
Marc Andreessen's IQ is estimated at approximately 152, placing him in the top 0.02% of the population. He has not taken a publicly disclosed standardized IQ test. This estimate reflects the technical achievement of building the first graphical web browser as an undergraduate, his serial entrepreneurship across multiple technology cycles, the pattern-recognition demonstrated in his venture capital investments (early backer of Facebook, Twitter, Airbnb, and dozens of other transformative companies), and the sustained quality of his public intellectual output on technology and economics.
What was the significance of the Mosaic browser?
Mosaic, released in 1993, was the first browser to display images inline with text — a seemingly simple feature that transformed the web from a text-based academic tool into a visually rich medium accessible to non-technical users. Before Mosaic, the internet was primarily used by academics and computer scientists through text interfaces; after Mosaic, the web became a mass medium. Andreessen built the original Mosaic at the National Center for Supercomputing Applications (NCSA) at the University of Illinois as an undergraduate research project, with a small team. The browser's release is widely considered the catalytic event of the first internet era.
What is Andreessen Horowitz and how has it changed venture capital?
Andreessen Horowitz (a16z), founded in 2009, is distinctive among venture capital firms for its scale of support services: rather than providing just capital and board advice, it offers portfolio companies access to an extensive network of recruiters, marketing specialists, government relations experts, and technical talent — essentially functioning as a professional services organization attached to a venture fund. This model, combined with its founders' celebrity status in Silicon Valley, allowed a16z to attract deals and talent that older firms could not match. It has also been unusually public in its views — publishing essays, research, and podcasts that articulate a consistent technology-optimist worldview — influencing both startup culture and public policy debates about technology.
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MyIQScores Editorial Team
Researchers in cognitive psychology, psychometrics & educational science
Last updated
May 10, 2026
All content on MyIQScores is reviewed for scientific accuracy against peer-reviewed research in cognitive psychology and psychometrics. Our editorial team cross-references each article with published literature before publication and updates pages whenever new research warrants a revision.