The Ledger

Every statement that passed quotation and attribution checks. Mix any filter with any other: certainty 1/5, debate potential 5/5, or both at once.

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why aren't all 49 resolved? a statement only gets an assessment when the public record can support or contradict it. opinions and what-ifs never can, and 49 checkable ones are still open, waiting for their date. predictions held up or didn't; assertions are supported or contradicted. on every card: ▮▮▮▮▮ certainty · ▮▮▮▮▮ debate potential. speakers are clickable

Prediction Open · timeframe Mar 2031
Chollet: AGI Codebase Will Be Under 10,000 Lines on 1980s Compute
“I do believe that, you know, when you create a GI retrospectively, it will turn out that it's a code base that's less than 10,000 lines of code. And that if you had known about it back in the 19 eighties, you could have done a GI back then using the computer r…”
François Chollet Mar 27, 2026 ▶ 36:09 François Chollet: Why Scaling Alone Isn’t Enough for AGI · Y Combinator
Prediction Open · timeframe Dec 2026
Musk: Digital superintelligence will arrive by 2026 for sure
“Like, I think we're quite close to digital superintelligence. It may happen this year, and if it doesn't happen this year, next year for sure. Digital superintelligence is defined as smarter than any human at anything.”
Elon Musk Jun 19, 2025 ▶ 42:04 Elon Musk: Digital Superintelligence, Multiplanetary Life, How to Be Useful · Y Combinator
Prediction Open · timeframe Jun 2055
Musk predicts Mars will be self-sustaining within roughly 30 years
“I think we'll have enough mass transferred to Mars within like roughly 30 years to make Mars self-sustaining, such that Mars can continue to grow and prosper, even if the resupply shifts from Earth stop coming.”
Elon Musk Jun 19, 2025 ▶ 38:02 Elon Musk: Digital Superintelligence, Multiplanetary Life, How to Be Useful · Y Combinator
Prediction Open · timeframe Jul 2036
Huang: Physical AI will be NVIDIA's next $100B business within 10 years
“Likely this will be one of the largest industries in the world, and it'll take longer than a couple, two, three years. It'll take less than 10, and so this will be our next hundred billion dollar business.”
Jensen Huang Jul 26, 2026 ▶ 38:48 Jensen Huang: The Mindset That Built NVIDIA · Y Combinator
Prediction Open · timeframe Apr 2028
Hassabis: AI might solve a Millennium Prize math problem within years
“When I say just, we're now talking about just like solving the Riemann hypothesis or something. This would be obviously amazing. Well, one of the Millennium Prize problems, and maybe we're a couple of years out from doing that.”
Demis Hassabis Apr 29, 2026 ▶ 36:38 Demis Hassabis: Agents, AGI & The Next Big Scientific Breakthrough · Y Combinator
Prediction Open · timeframe Mar 2076
Chollet: AI in 50 Years Will Not Use Today's LLM Stack
“I personally don't think that machine learning or AI in 50 years is still going to be built on this stack.”
François Chollet Mar 27, 2026 ▶ 5:01 François Chollet: Why Scaling Alone Isn’t Enough for AGI · Y Combinator
Prediction Open · timeframe Jun 2030
Musk: Humanoid robots will outnumber all other robots combined tenfold
“There's gonna be so many humanoid robots, and robots of all sizes and shapes, but my prediction is that there will be more humanoid robots by far than all other robots combined, by maybe an order of magnitude, like a big difference.”
Elon Musk Jun 19, 2025 ▶ 34:39 Elon Musk: Digital Superintelligence, Multiplanetary Life, How to Be Useful · Y Combinator
Prediction Open · timeframe Jul 2031
Wang: AI tools will increase businesses on Meta to billions
“There's two hundred million businesses that are on Metis platforms today. We think that number should go to billions with this explosion of creativity and using AI tools”
Alexandr Wang Jul 29, 2026 ▶ 12:46 Alexandr Wang: “This is a Once-in-a-Civilization Opportunity” · Y Combinator
Assertion Open · timeframe Jul 2027
Cherny: Claude Opus 5 Can Run Autonomously for Months Without Scaffolding
“For five, one example of something it does that I think no other model has done is it runs for a very long period of time. And especially when you combine Opus Five with auto mode, it's just like incredible. Like it can go for days, weeks, months at a time. It…”
Boris Cherny Jul 27, 2026 ▶ 1:25 Boris Cherny: We Cut 80% of Claude Code’s Prompt · Y Combinator
Prediction Open · timeframe Jul 2031
Huang: Most software will be built agentically, elevating systems thinking
“In the case of software most software is going to be done agentically anyhow, so you have to be much more able to think abstractly about systems.”
Jensen Huang Jul 26, 2026 ▶ 20:38 Jensen Huang: The Mindset That Built NVIDIA · Y Combinator
Prediction Open · timeframe Jun 2028
Tan: AI token compute costs will drop drastically within two years
“I mean, basically because the frontier models are that good, like, you know, I think that in two years, like, That'll be a 100,000 and, you know, down to 10,000 and a thousand. I mean, basically these orders of magnitude are about to happen.”
Garry Tan Jun 25, 2026 ▶ 30:27 Zynga Founder: Consumer Is Not Investible Right Now - Thats Why You Should Build It · Y Combinator
Prediction Open · timeframe Jun 2031
Franceschi: AI Token Spend Will Become Every Company's Biggest Expense
“I think the, you know, it will be the biggest expense in a company, like easily.”
Pedro Franceschi Jun 10, 2026 ▶ 30:43 The Most AI-Pilled CEO We Know · Y Combinator
Prediction Open · timeframe May 2028
Tan: $100K AI token workloads will drop to $200 in two years
“What you spend a 100,000 or a million dollars a year on now, it will be commonplace like in, in two years, right? It'll, it won't cost a 100,000 in a year. It'll cost 10,000. And the year after that, it'll be like a couple hundred bucks, right? And everyone wi…”
Garry Tan May 27, 2026 ▶ 30:12 Inside YC's AI Playbook · Y Combinator
Assertion Open · timeframe May 2026
Graham: YC startups returning home are half as likely to become unicorns
“YC now has a lot of data about this, and the startups that go home after YC don't do as well as the ones that stay. Startups that go home back, startups that go back home after YC are only about half as likely to become unicorns”
Paul Graham May 13, 2026 ▶ 18:49 Paul Graham, Founder of Y Combinator, Live from Stockholm · Y Combinator
Prediction Open · timeframe Apr 2029
Massad: By Agent 5, Replit will autonomously build and market SaaS daily
“So I think perhaps Agent Five, or maybe sooner, you should be able to tell Replit, every day build me a SaaS company, and like, try to market it, and see what works, and make me some revenue.”
Amjad Masad Apr 25, 2026 ▶ 28:52 Replit's CEO On The Only Two Jobs Left In The Company Of The Future · Y Combinator
Prediction Open · timeframe Mar 2056
Chollet: Future AI Won't Just Be Layered Harnesses on Base LLMs
“Future AI in a few decades it's not going to be this harness on top of a reasoning model on top of a base LLM.”
François Chollet Mar 27, 2026 ▶ 12:24 François Chollet: Why Scaling Alone Isn’t Enough for AGI · Y Combinator
Prediction Open · timeframe Mar 2036
Hodak: BCIs will achieve native 20/20 vision and color within 10 years
“I mean, I do think that you can get to close to native acuity, so kind of like your normal twenty-twenty vision. We're definitely not there yet, but I see a path to get there and be able to get Color and fill in a lot of the field of view. To be clear that it'…”
Max Hodak Mar 9, 2026 ▶ 13:16 The Future Of Brain-Computer Interfaces · Y Combinator
Prediction Open · timeframe Sep 2030
Levie: 100 Startups Created Between 2024-2028 Will Reach $5B to $20B Valuations
“There will be 100 startups that get created between last year and in three years from now that all become five, 10, twenty billion dollar companies because they're able to find the next set of nouns and verbs”
Aaron Levie Sep 16, 2025 ▶ 18:44 Aaron Levie: Why Startups Win In The AI Era · Y Combinator
Prediction Open · timeframe Sep 2027
Masad: Developers will reliably run 1,000 concurrent AI agents within two years
“Or plus, which I assume we're going to get to in the next couple of years, you can really spin up a thousand agents, give them a lot, thousand problems, and reliably be confident that like, 95% of them is going to work.”
Amjad Masad Sep 12, 2025 ▶ 10:29 The Future of Software Creation with Replit CEO Amjad Masad · Y Combinator
Prediction Open · timeframe Sep 2030
Masad: Next-gen coding AI will train via AlphaZero-style RL, not human code
“My bet is that Pretty soon we're going to move into more of the alpha zero style of training where you have a more traditional LM that's trained on all of the internet. But then the way to train the next generation of it would be to give it a reinforcement lea…”
Amjad Masad Sep 12, 2025 ▶ 40:14 The Future of Software Creation with Replit CEO Amjad Masad · Y Combinator
Prediction Open · timeframe Jul 2028
Srinivas: OpenAI and Anthropic Will Both Build Their Own Browsers
“That said, I'm fully working with the assumption that OpenAI will also build its own browser. Anthropic will also try to build its own browser.”
Aravind Srinivas Jul 11, 2025 ▶ 4:29 Aravind Srinivas: Perplexity's Race to Build Agentic Search · Y Combinator
Prediction Open · timeframe Jul 2028
Srinivas: Perplexity can reach billions annually in subscription revenue alone
“We think, like, we can grow at least, you know, a few billions a year in just subs, which is a great business.”
Aravind Srinivas Jul 11, 2025 ▶ 28:25 Aravind Srinivas: Perplexity's Race to Build Agentic Search · Y Combinator
Prediction Open · timeframe Jun 2028
Altman: ChatGPT will become third biggest website, possibly first
“It'll be the third at some point, hopefully someday the first if our current growth rates continue”
Sam Altman Jun 21, 2025 ▶ 9:48 Sam Altman: The Future of OpenAI, ChatGPT's Origins, and Building AI Hardware · Y Combinator
Prediction Open · timeframe Jun 2125
Musk: Humanoid robots will outnumber humans five to tenfold
“I mean, I'd predict that there's gonna be, At least five times as many humanoid robots as there are humans, maybe 10 times.”
Elon Musk Jun 19, 2025 ▶ 36:55 Elon Musk: Digital Superintelligence, Multiplanetary Life, How to Be Useful · Y Combinator
Prediction Open · timeframe Feb 2030
Search industry revenue must decline as users shift directly to AI agents
“Search revenue has to go down in a world where people are just directly talking to AIs and agents are doing stuff for them.”
Aravind Srinivas Feb 21, 2025 ▶ 32:43 How To Build The Future: Aravind Srinivas · Y Combinator
Prediction Open · timeframe May 2028
Preskill: Superconducting circuits and trapped ions will lead for 5-10 years
“The most advanced are superconducting circuits and trapped ions, which is why I mentioned those first, and I think that will remain true, you know, over the next five to 10 years.”
John Preskill May 16, 2018 ▶ 32:27 John Preskill on Quantum Computing · Y Combinator
Assertion Open · timeframe May 2018
Bartram: Tech interviewer agreement rates match online movie reviewer agreement
“A pretty interesting stat we dug up is I compared the rate of agreement between interviewers at companies with a data set of users reviewing movies online, right? And the numbers were actually, were basically, and the integrator agreement was equivalent.”
Ammon Bartram May 17, 2017 ▶ 13:20 Hiring Engineers with Ammon Bartram · Y Combinator
Prediction Open · timeframe Jul 2027
Scholl: Boom will deliver its first natural gas turbine within 12 months
“The first super power turbines under construction right now and goes to the first customer in less than 12 months.”
Blake Scholl Jul 28, 2026 ▶ 18:22 Blake Scholl: Breaking the Supersonic Ban · Y Combinator
Assertion Open · timeframe Apr 2027
Hassabis: Gemini sometimes identifies chess blunders and plays them anyway
“And so what we see is that, you know, sometimes it will consider a move. It will realize it's a blunder, but it can't find anything better, so it kind of goes back to that move and does it anyway.”
Demis Hassabis Apr 29, 2026 ▶ 14:31 Demis Hassabis: Agents, AGI & The Next Big Scientific Breakthrough · Y Combinator
Prediction Open · timeframe Apr 2036
Hassabis: A full virtual cell simulation is probably 10 years away
“And I think we're about 10 years away probably from something like a virtual cell, like a full virtual cell”
Demis Hassabis Apr 29, 2026 ▶ 26:33 Demis Hassabis: Agents, AGI & The Next Big Scientific Breakthrough · Y Combinator
Assertion Open · timeframe Nov 2026
Lu Catches Startup Slashy Stealing an Image From Notion
“Oh wow, they're actually stealing, like, a Notion picture here.”
Rio Lu Nov 20, 2025 ▶ 22:07 Cursor Head of Design Roasts Startup Websites · Y Combinator
Assertion Open · timeframe Sep 2026
Joseph: Adversaries actively publish web data designed to poison AI models
“There are people who are, like, trying to put stuff out that is, like, as damaging as possible for the model, you know, how can I make it past the filter and get into the model would be totally like secretly useless.”
Nick Joseph Sep 30, 2025 ▶ 36:47 Anthropic Head of Pretraining on Scaling Laws, Compute, and the Future of AI · Y Combinator
Assertion Open · timeframe Jul 2026
Chollet: Ten random people with majority voting score 100% on ARC-2
“And all tasks in Arc-II were sold by at least two other people that saw it. And each task was seen on average by about seven people. And so what that tells you is that a group of 10 random people with majority voting would score 100% on Arc-II.”
François Chollet Jul 3, 2025 ▶ 17:10 François Chollet: How We Get To AGI · Y Combinator
Prediction Open · timeframe May 2023
Preskill: Quantum computers will impact chemistry, carbon capture, and materials
“The Ones which will affect everyday life, I think, are better methods for understanding and inventing new materials, new chemical compounds. Things like that can be really important. You know, if you find a better way of capturing carbon by designing a better …”
John Preskill May 16, 2018 ▶ 14:32 John Preskill on Quantum Computing · Y Combinator
Prediction Open · timeframe Apr 2021
3D home printing can reduce construction costs from $6,500 to $3,000
“So right now our homes on average are about 6500 dollars per home. We believe with three D home printing, we can get that down to about 3000 dollars over time, not in the beginning, but over time,”
Brett Hagler Apr 4, 2018 ▶ 30:56 3D Home Printing for the Developing World – Alexandria Lafci and Brett Hagler of New Story Charity · Y Combinator
Prediction Open · timeframe Mar 2028
Buchheit: Commercial supersonic flights will reach Tokyo in six hours by 2028
“In 10 years, when you wanna go to Tokyo, you're gonna get there in, like, six hours.”
Paul Buchheit Mar 7, 2018 ▶ 23:04 Paul Buchheit - Startup Investor School Day 2 · Y Combinator
Prediction Open · timeframe Jan 2060
Sloan predicts Facebook updates and Instagram photos will be gone by 2050
“I would not bet against everything that we're pouring into kind of the vast digital box, you know, like everything, the Facebook updates, the Instagram photos, all of it basically being gone in 2060, 20, 50. Like, I hope that's not the case, and I mean, it see…”
Robin Sloan Nov 29, 2017 ▶ 28:43 Microbes, Robots, and Ambition - Robin Sloan on His Novel Sourdough · Y Combinator
Assertion Open · timeframe Jun 2027
Chou: Ploy slurps, recreates, and refactors websites in 75 seconds
“And in about 75 seconds, we would have slurped the existing site, recreated all the components, refactored it, and you get this.”
Bryant Chou Jun 19, 2026 ▶ 12:05 The Age Of The 40-Year-Old Solo Founder Is Here · Y Combinator
Prediction Open · timeframe Mar 2029
Hodak: Science implant will treat retinitis pigmentosa and Stargardt disease
“One of the nice things about our device is that it doesn't We're somewhat agnostic to the reason that you lost the photoreceptors, and so we think it'll also work for retinitis pigmentosa, for Stargardt's, for these other indications.”
Max Hodak Mar 9, 2026 ▶ 17:03 The Future Of Brain-Computer Interfaces · Y Combinator
Assertion Open · timeframe Nov 2027
Tan: GigaML Automated 30,000 Zepto Customer Support Tickets Daily
“So last time I did office hours with them, they said that they automated 30,000 tickets per day.”
Garry Tan Nov 14, 2024 ▶ 27:53 Why The Next AI Breakthroughs Will Be In Reasoning, Not Scaling · Y Combinator
Prediction Open · timeframe Aug 2028
Brillhart: By 2028, virtual reality will no longer be called "VR"
“I don't see it being called VR. Like, I just don't see it. I think that it's all gonna go to a different kind of place. I think, yeah, I think it'll be called something else.”
Jessica Brillhart Aug 16, 2018 ▶ 29:51 Jessica Brillhart, Immersive Director, on VR and AR · Y Combinator
Prediction Open · timeframe Jul 2021
Gil: Didi will become a company worth over $100 billion
“I think they own 15 to 20% of Didi, which in and of itself is gonna be a hundred billion dollar plus company, so I actually think that worked out really well for them.”
Elad Gil Jul 27, 2018 ▶ 9:44 Elad Gil Shares Advice from the High Growth Handbook, a Guide to Scaling Startups · Y Combinator
Prediction Open · timeframe Sep 2117
Adhikari: Michelson interferometers won't be used for gravitational waves in a century
“If you ask in a hundred years from now, will people still build Michelson laser interferometers and do the same thing? Right. I have a hard time believing that's true.”
Rana Adhikari Sep 15, 2017 ▶ 1:11:53 The Technical Challenges of Measuring Gravitational Waves - Rana Adhikari of LIGO · Y Combinator
Prediction Open · timeframe Apr 2029
Bilgen: Current facility can scale to nearly two million tests annually
“We believe that we can expand into close to two million tests per year just using this facility. That would be, you know, around essentially every one in three babies that would be tested with our tests.”
Ozan Bilgen Apr 6, 2026 ▶ 11:36 BillionToOne Is Solving One of Biotech’s Hardest Problems · Y Combinator
Assertion Open · timeframe Mar 2026
Friedman: Variance emerges from stealth with $21M Series A
“We are announcing that Variance is coming out of stealth and announcing their twenty-one million dollar Series A, and I am really excited to be here with Karine, the co-founder of Variance.”
Jared Friedman Mar 31, 2026 ▶ 0:15 This Startup Catches Fraud at Scale · Y Combinator
Assertion Open · timeframe Jan 2029
Lapsa: Stoke Space factory can build about seven vehicles per year
“The facility is designed to build about seven vehicles per year.”
Andy Lapsa Jan 8, 2026 ▶ 11:05 Inside The Startup Building Reusable Rockets · Y Combinator
Assertion Open · timeframe Dec 2024
Steve Jobs Featured Bump's Icon in an Apple Keynote Presentation
“Steve Jobs put our icon on a slide on one of his pitch decks.”
David Lieb Dec 18, 2024 ▶ 6:00 How David Lieb Turned a Failing Startup Into Google Photos | Backstory · Y Combinator
Assertion Not yet assessed · timeframe Feb 2022
Seibel: First version of Gmail was built inside Google Groups UI
“The first version of Gmail, he basically figured out how to put his email into this Google Groups UI.”
Michael Seibel Feb 16, 2022 ▶ 2:08 Things That Don't Scale, The Software Edition – Dalton Caldwell and Michael Seibel · Y Combinator
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