2026-04-10 SA-2026-04 3Nav. SeverityCartographic Incident 5 min 1,060 w ->
Untitled post Here is a photo of my family. I love them more than anything. Images have power, I hope. Normally we try to be pretty private, but in this case I am sharing a photo in the hopes that it might dissuade the next person from throwing a Molotov cocktail at our hou...
2025-09-09 SA-2025-09 2Nav. SeverityPoorly Marked 1 min 80 w ->
Jakub and Szymon Jakub is our chief scientist. He once described Szymon as “indefatigable”, which is as perfect of a use of that word as I have ever heard....
2025-06-10 SA-2025-06 2Nav. SeverityPoorly Marked 9 min 1,918 w ->
The Gentle Singularity We are past the event horizon; the takeoff has started. Humanity is close to building digital superintelligence, and at least so far it’s much less weird than it seems like it should be. Robots are not yet walking the streets, nor are most of us talking to AI all day....
2025-02-09 SA-2025-02 2Nav. SeverityPoorly Marked 6 min 1,320 w ->
Three Observations Our mission is to ensure that AGI (Artificial General Intelligence) benefits all of humanity. Systems that start to point to AGI* are coming into view, and so we think it’s important to understand the moment we are in....
2025-01-06 SA-2025-01 2Nav. SeverityPoorly Marked 9 min 1,950 w ->
Reflections The second birthday of ChatGPT was only a little over a month ago, and now we have transitioned into the next paradigm of models that can do complex reasoning....
2024-05-13 SA-2024-05 2Nav. SeverityPoorly Marked 2 min 284 w ->
GPT-4o There are two things from our announcement today I wanted to highlight. First, a key part of our mission is to put very capable AI tools in the hands of people for free (or at a great price)....
2022-07-13 SA-2022-07 2Nav. SeverityPoorly Marked 2 min 266 w ->
Helion Needs You Helion has been progressing even faster than I expected and is on pace in 2024 to 1) demonstrate Q > 1 fusion and 2) resolve all questions needed to design a mass-producible fusion generator....
2020-06-19 SA-2020-06 3Nav. SeverityCartographic Incident 2 min 335 w ->
Researchers and Founders I spent many years working with founders and now I work with researchers. Although there are always individual exceptions, on average it’s surprising to me how different the best people in these groups are (including in some qualities that I had assumed were p...
2020-05-28 SA-2020-05 3Nav. SeverityCartographic Incident 4 min 772 w ->
Idea Generation The most common question prospective startup founders ask is how to get ideas for startups. The second most common question is if you have any ideas for their startup. But giving founders an idea almost always doesn’t work....
2020-03-07 SA-2020-03 3Nav. SeverityCartographic Incident 2 min 235 w ->
The Virus Although I still hope things will go differently, the experts I’ve spoken to think we are likely to face a global tragedy—hundreds of thousands of deaths from Covid-19. I hope that society views this as a warning for the future. Covid-19 is bad, but only a warm-up....
2020-01-13 SA-2020-01 2Nav. SeverityPoorly Marked 9 min 1,950 w ->
How To Invest In Startups There is a lot of advice about how to be a good startup founder. But there isn’t very much about how to be a good startup investor....
2019-01-24 SA-2019-01 2Nav. SeverityPoorly Marked 16 min 3,380 w ->
How To Be Successful I’ve observed thousands of founders and thought a lot about what it takes to make a huge amount of money or to create something important. Usually, people start off wanting the former and end up wanting the latter. Here are 13 thoughts about how to achieve such outlier success....
2018-06-25 SA-2018-06 3Nav. SeverityCartographic Incident 1 min 212 w ->
Reinforcement Learning Progress Today, OpenAI released a new result. We used PPO (Proximal Policy Optimization), a general reinforcement learning algorithm invented by OpenAI, to train a team of 5 agents to play Dota and beat semi-pros....
2017-12-16 SA-2017-12 3Nav. SeverityCartographic Incident 3 min 607 w ->
A Clarification I made a point in this post inelegantly in a way that was easy to misunderstand, so I’d like to clarify it. I didn’t mean that we need to tolerate brilliant homophobic jerks in the lab so that we can have scientific progress....
2017-12-07 SA-2017-12 3Nav. SeverityCartographic Incident 4 min 716 w ->
The Merge A popular topic in Silicon Valley is talking about what year humans and machines will merge (or, if not, what year humans will get surpassed by rapidly improving AI or a genetically enhanced species). Most guesses seem to be between 2025 and 2075....
2017-05-19 SA-2017-05 2Nav. SeverityPoorly Marked 1 min 37 w ->
Join the YC Software Team If you want to get funded by YC as a founder in the future, but you don't have a startup that's ready for that yet, joining the YC software team is a great hack to get there.
2017-03-31 SA-2017-03 3Nav. SeverityCartographic Incident 2 min 245 w ->
Tech Workers' Values For good and bad, technology has become a central force in all our lives. As members of the community, we're interested in ways in which tech companies can use their collective power to protect privacy, rule of law, freedom of expression, and other fundamental American rights....
2017-02-21 SA-2017-02 2Nav. SeverityPoorly Marked 10 min 2,148 w ->
What I Heard From Trump Supporters After the election, I decided to talk to 100 Trump voters from around the country. I went to the middle of the country, the middle of the state, and talked to many online. This was a surprisingly interesting and helpful experience—I highly recommend it....
2016-03-11 SA-2016-03 2Nav. SeverityPoorly Marked 2 min 344 w ->
Hard Tech is Back First of all, congrats to Kyle, Dan, and the rest of the Cruise team. You all have made amazing progress and we look forward to seeing more in the future....
2015-11-02 SA-2015-11 2Nav. SeverityPoorly Marked 5 min 933 w ->
The Tech Bust of 2015 Maybe instead of a tech bubble, we’re in a tech bust. No one seems to fervently believe tech valuations are cheap, so it’d be somewhat surprising if we were in a bubble. In many parts of the market, valuations seem too cheap....
2015-09-28 SA-2015-09 2Nav. SeverityPoorly Marked 4 min 710 w ->
Airbnb and San Francisco Airbnb has recently been attacked by San Francisco politicians for driving up the price of housing in the city. San Francisco has tried, and will continue to try, to ban Airbnb in various ways. Last week, this excellent post was published on Prop F—“the Airbnb law”....
2015-06-29 SA-2015-06 3Nav. SeverityCartographic Incident 3 min 523 w ->
Energy I think a lot about how important cheap, safe, and abundant energy is to our future. A lot of problems—economic, environmental, war, poverty, food and water availability, bad side effects of globalization, etc.—are deeply related to the energy problem....
2015-04-28 SA-2015-04 2Nav. SeverityPoorly Marked 6 min 1,284 w ->
The days are long but the decades are short I turned 30 last week and a friend asked me if I'd figured out any life advice in the past decade worth passing on. I'm somewhat hesitant to publish this because I think these lists usually seem hollow, but here is a cleaned up version of my answer: 1) Never p...
2015-03-03 SA-2015-03 3Nav. SeverityCartographic Incident 1 min 201 w ->
Technology predictions Some of these are probably apocryphal, but making predictions about the limits of technology is really hard: Space travel is utter bilge. - Popular Mechanics, 1949 X-rays are a hoax. - Lord Kelvin, ca....
2015-03-02 SA-2015-03 2Nav. SeverityPoorly Marked 6 min 1,329 w ->
Machine intelligence, part 2 This is part two of a a two-part post—the first part is here. THE NEED FOR REGULATION Although there has been a lot of discussion about the dangers of machine intelligence recently, there hasn’t been much discussion about what we should try to do to mitigate the threat....
2015-02-25 SA-2015-02 2Nav. SeverityPoorly Marked 5 min 1,095 w ->
Machine intelligence, part 1 This is going to be a two-part post—one on why machine intelligence is something we should be afraid of, and one on what we should do about it....
2014-11-12 SA-2014-11 3Nav. SeverityCartographic Incident 2 min 256 w ->
A Question I have a question for all the people that use their iPhone or Android to complain on Twitter, Facebook, or reddit about the lack of innovation… Or message their friends on WhatsApp or Snapchat about how Silicon Valley only builds toys for rich people in betwee...
2014-09-30 SA-2014-09 3Nav. SeverityCartographic Incident 2 min 367 w ->
reddit I’m very excited to share that I’m investing in reddit (personally, not via Y Combinator). I have been a daily reddit user for 9 years—longer than pretty much any other service I still use besides Facebook, Google, and Amazon—and reddit's founders (Steve Huffm...
2014-06-29 SA-2014-06 2Nav. SeverityPoorly Marked 59 min 13,124 w ->
You and Your Research, by Richard Hamming Richard Hamming gave this talk in March of 1986. [1] It's one of the best talks I've ever read and has long impacted how I think about spending my time. I mentioned it to a number of people this weekend who, to my surprise, had never heard of it....
2014-04-16 SA-2014-04 2Nav. SeverityPoorly Marked 2 min 261 w ->
The Worst Part of YC We are going to send out YC summer 2014 interview decisions (both yes and no) before 10 pm PDT tonight. The worst part of our job at YC is rejecting companies. It leaves me feeling down for many days after our application process....
2014-03-21 SA-2014-03 2Nav. SeverityPoorly Marked 4 min 876 w ->
What I've Learned From Female Founders So Far On the whole, I got a great response to my request for feedback about how YC could encourage female founders. It's clear there are two separate problems: 1) Some women already starting startups aren't interested in doing Y Combinator....
2014-02-20 SA-2014-02 2Nav. SeverityPoorly Marked 1 min 165 w ->
Fundraising Mistakes Founders Make There’s a lot written about what you should do when you raise money, but there hasn’t been as much written about the common mistakes founders make....
2013-07-17 SA-2013-07 2Nav. SeverityPoorly Marked 3 min 614 w ->
How things get done I’ve heard a lot of different theories about how things get done. I’m interested in this topic, so I pay attention and see how the theories hold up. Here’s the best one: a combination of focus and personal connections. Charlie Rose said this to Paul Graham, who told it to me....
2013-06-20 SA-2013-06 2Nav. SeverityPoorly Marked 10 min 2,159 w ->
What happened to innovation? There’s a lot of debate about whether or not the pace of innovation has slowed, and if so, what that means. After some particularly brutal pitches that felt like Saturday Night Live parodies of startups, I feel compelled to weigh in....
2013-06-05 SA-2013-06 3Nav. SeverityCartographic Incident 2 min 422 w ->
Party rounds There is a recent trend in Silicon Valley towards party rounds—in early financing rounds, instead of raising large amounts of money from a few large investors, companies are instead raising small amounts of money from many small investors....
2013-06-04 SA-2013-06 2Nav. SeverityPoorly Marked 2 min 404 w ->
A founder-friendly term sheet When I invest (outside of YC) I make offers with the following term sheet. I’ve tried to make the terms reflect what I wanted when I was a founder. A few people have asked me if I’d share it, so here it is. I think it’s pretty founder-friendly....
2013-06-04 SA-2013-06 3Nav. SeverityCartographic Incident 1 min 119 w ->
Rickover Man has a large capacity for effort. In fact it is so much greater than we think it is that few ever reach this capacity. We should value the faculty of knowing what we ought to do and having the will to do it. Knowing is easy; it is the doing that is difficult....
2013-03-11 SA-2013-03 3Nav. SeverityCartographic Incident 1 min 111 w ->
Aliens I don't believe that any of the blurry UFO photos are real, for a very simple reason--they all resemble a slightly more advanced version of the the then-current technology and style....