Paul Graham's IQ: 155
Paul Graham
Estimated IQ
155
Known For
Co-founder of Y Combinator, Lisp hacker, essayist
About Paul Graham
Paul Graham co-founded Y Combinator in 2005, creating the most influential startup accelerator in history and funding the early stages of Airbnb, Dropbox, Stripe, Reddit, Twitch, and hundreds of other major companies. Before YC, Graham was a Lisp programmer and painter who sold his startup Viaweb to Yahoo in 1998. He is equally celebrated as an essayist: his essays on startups, technology, and intellectual life — collected at paulgraham.com — are among the most widely read long-form pieces in the technology world, known for crystallizing ideas with unusual precision and originality. His essays on keeping your identity small, the difference between cities and suburbs, and what makes a good hacker are widely cited across disciplines.
What an IQ of 155 Means
An IQ of 155 for Graham reflects his exceptional analytical and verbal intelligence — his essays demonstrate the ability to identify non-obvious patterns, name them precisely, and construct arguments with unusual logical rigor for non-academic writing. His simultaneous mastery of Lisp programming (highly abstract symbolic reasoning), painting (visual-spatial), entrepreneurship (strategic-social), and essay writing (verbal-analytical) suggests a high general intelligence underlying all these specific skills.
How Paul Graham 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 |
|---|---|---|
| Paul Graham | 155 | Co-founder of Y Combinator, Lisp hacker, essayist |
| Patrick Collison | 152 | Co-founder and CEO of Stripe, polymath entrepreneur |
| Naval Ravikant | 150 | Co-founder of AngelList, philosopher-investor, wealth and happiness thinker |
| Demis Hassabis | 168 | Co-founder of DeepMind, AlphaFold, chess prodigy, neuroscientist |
| Chamath Palihapitiya | 145 | Early Facebook executive, venture capitalist, SPAC pioneer |
| Ilya Sutskever | 155 | Co-founder of OpenAI, deep learning pioneer, AlexNet |
| Sam Bankman-Fried | 155 | Founded FTX, effective altruism proponent, convicted of fraud |
See the complete famous IQ list or check what an IQ of 155 means.
Where This Estimate Comes From
- Estimates inferred from his documented academic record, including a PhD in computer science from Harvard
- His technical writing and the sale of Viaweb to Yahoo are frequently cited in support of estimates
- No publicly verified test result
Estimate disclaimer: Paul Graham's IQ figure is a speculative estimate compiled from public sources, not a verified test result. See how we compile these estimates.
Frequently Asked Questions
What is Paul Graham's IQ?
Paul Graham's IQ is estimated at around 155, reflecting his exceptional analytical and verbal intelligence. He built Y Combinator into the world's most influential startup accelerator, funding companies worth trillions in aggregate, while simultaneously writing essays that are among the most intellectually precise and widely read in the technology world.
What companies did Y Combinator fund?
Y Combinator's portfolio includes some of the most valuable companies in the world, including Airbnb, Stripe, Dropbox, Reddit, Twitch, Instacart, DoorDash, Coinbase, Gusto, and hundreds of others. The combined valuation of YC alumni companies exceeded $600 billion by 2023. Graham's early insight — that software startups could be funded in batches with small amounts of capital and mentorship rather than large individual investments — created a new model for venture investing that has been widely imitated.
What makes Paul Graham's essays distinctive?
Graham's essays are distinctive for their logical precision, willingness to follow arguments wherever they lead regardless of social comfort, and ability to name patterns that readers recognize but have not articulated. His essay 'Keep Your Identity Small' argues that forming strong identities around beliefs (political, religious, professional) makes you unable to think clearly about those subjects. 'What You Can't Say' explores how each era has taboo ideas that turn out to be correct. His essays model a style of thinking — following evidence and logic over social consensus — that many readers describe as permanently changing how they approach intellectual problems.
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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.