Pinned Tweet
The deadline to apply for the YC Winter 2027 batch is coming up in 2 days!
YC founders get:
🔸 $500K in funding
🔸 $12M+ in tokens, credits & deals
🔸 Partners who were founders first, and will always have your back
🔸 Access to the best founder community in the world
🔸 Help launss YC’s channels, with a combined audience of 6M+
🔸 Connections to 100s of potential enterprise buyers through YC’s Early Access Network, months before Demo Day
🔸 Hiring through Work at a Startup, with 1.25M+ candidates across engineering, design & product. (Founders have already made 2,000+ hires)
🔸 Demo Day in front of thousands of top investors
Apply by Nov 2: ycombinator.com/apply.
YC founders get:
🔸 $500K in funding
🔸 $12M+ in tokens, credits & deals
🔸 Partners who were founders first, and will always have your back
🔸 Access to the best founder community in the world
🔸 Help launss YC’s channels, with a combined audience of 6M+
🔸 Connections to 100s of potential enterprise buyers through YC’s Early Access Network, months before Demo Day
🔸 Hiring through Work at a Startup, with 1.25M+ candidates across engineering, design & product. (Founders have already made 2,000+ hires)
🔸 Demo Day in front of thousands of top investors
Apply by Nov 2: ycombinator.com/apply.
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Y Combinator retweeted
Garry Tan reveals why Y Combinator decides in just 10 minutes whether or not to fund a founder
“10 minutes is a wonderful constraint,” @ycombinator CEO @garrytan tells @WalterIsaacson on today's episode of The Builders.
“Paul Graham, the founder of YC, figured out that you r, you don't need an hour, you could probably actually do it in about five minutes. But five minutes feels rude, so that's how YC ended up at 10 minutes.
If you can say something very simply that hits us, like, you know, here's a user, here's a real person who has a problem, and here's how the technology that we built actually solves that. We just wanna know what it is and why it's awesome, and then if we have a little bit of extra time, we wanna know why that founder is the person to go and build that thing.”
Full episode: youtube.com/watch?v=aq1H71…
“10 minutes is a wonderful constraint,” @ycombinator CEO @garrytan tells @WalterIsaacson on today's episode of The Builders.
“Paul Graham, the founder of YC, figured out that you r, you don't need an hour, you could probably actually do it in about five minutes. But five minutes feels rude, so that's how YC ended up at 10 minutes.
If you can say something very simply that hits us, like, you know, here's a user, here's a real person who has a problem, and here's how the technology that we built actually solves that. We just wanna know what it is and why it's awesome, and then if we have a little bit of extra time, we wanna know why that founder is the person to go and build that thing.”
Full episode: youtube.com/watch?v=aq1H71…
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Y Combinator retweeted
Simantic is the simulation layer that lets engineers and AI agents test and validate firmware at the speed of software.
Frontier AI models have made generating firmware code cheap and effortless, but testing still depends on manual hardware debugging, expensive equipment, and than a decade ago. Simantic is modernizing firmware testing with simulation built for the era of coding agents.
w/ @ycombinator @shong0504 @enough_ahnaf
Frontier AI models have made generating firmware code cheap and effortless, but testing still depends on manual hardware debugging, expensive equipment, and than a decade ago. Simantic is modernizing firmware testing with simulation built for the era of coding agents.
w/ @ycombinator @shong0504 @enough_ahnaf
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Y Combinator retweeted
Introducing OpenHack: the Always on AI Security Engineer, now powered by Claude Mythos.
Until Nov 11, Claude Mythos scanning will be free to help customers find, verify, prioritize and fix urgent vulnerabilities automatically.
openhack.com/blog/introduci…
Until Nov 11, Claude Mythos scanning will be free to help customers find, verify, prioritize and fix urgent vulnerabilities automatically.
openhack.com/blog/introduci…
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Y Combinator retweeted
Today, Exa has live elections data for the US midterms!
Try asking ChatGPT, Claude, or your favorite Exa-enabled agent to make a personalized elections dashboard. Exa will return results powered by a stream of thousands of updates per minute.
Try asking ChatGPT, Claude, or your favorite Exa-enabled agent to make a personalized elections dashboard. Exa will return results powered by a stream of thousands of updates per minute.
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Y Combinator retweeted
Today I'm introducing physical world intelligence for property, infrastructure and land.
banks lend money to buy and build. insurers pay when things go wrong. but they rarely see what's there.
we show it all in one operating system.
ageospatial.com (yc f26)
banks lend money to buy and build. insurers pay when things go wrong. but they rarely see what's there.
we show it all in one operating system.
ageospatial.com (yc f26)
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Y Combinator retweeted
This month we're launching STATE OF THE ART no.2, the RE-ENCHANTMENT edition. STATE OF THE ART (@sotazine) is San Francisco's premier techno-literary zine.
This edition features original writing and interviews by Gwern, Erik Davis, @deepfates, @LapsusLima, @BjarturTomas, ts, and more.
Plus gorgeous art + design by @JaredRPoblete.
If you want to get on the list for the limited print run and newsletter, sign up below:
This edition features original writing and interviews by Gwern, Erik Davis, @deepfates, @LapsusLima, @BjarturTomas, ts, and more.
Plus gorgeous art + design by @JaredRPoblete.
If you want to get on the list for the limited print run and newsletter, sign up below:
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Y Combinator retweeted
Artie now runs Apache Kafka for you on AWS.
You pay AWS’s price for the infrastructure plus 25% on the brokers, and that’s it. Three r8g.large brokers with 1 MB/s in and 500 GB retained come to $436 a month, compared with $1,110 for the same cluster on Amazon MSK.
Once your neers are on call for it. Artie Managed Kafka replaces failed brokers, rebalances partitions, grows disks before they fill, moves older data to S3, and rolls out upgrades one broker at a time.
Last night a streamer tried running Kafka himself, live. By 3 AM his disks were full, a broker was on fire, and the partition reassignment had four hours left. Someone in chat told him to “just use managed.” Chat was right.
You pay AWS’s price for the infrastructure plus 25% on the brokers, and that’s it. Three r8g.large brokers with 1 MB/s in and 500 GB retained come to $436 a month, compared with $1,110 for the same cluster on Amazon MSK.
Once your neers are on call for it. Artie Managed Kafka replaces failed brokers, rebalances partitions, grows disks before they fill, moves older data to S3, and rolls out upgrades one broker at a time.
Last night a streamer tried running Kafka himself, live. By 3 AM his disks were full, a broker was on fire, and the partition reassignment had four hours left. Someone in chat told him to “just use managed.” Chat was right.
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Y Combinator retweeted
Science doesn’t advance because of good ideas.
It advances because someone built the experiments, ran them. watched them fail, figured out why, and tried again.
As an experimental physicist, I learned firsthand how my physical interactions with my experimental apparatus lead to . The bottleneck in science isn’t a shortage of ideas. It’s the ability to test these ideas in a flexible manner at scale.
Today we’re launching @primordiant.
We’re building general-purpose robotic scientists that can operate real laboratory equipment, run experiments, learn from the results, and do it all again.
Science is experimental. It’s time AI got its hands dirty.
It advances because someone built the experiments, ran them. watched them fail, figured out why, and tried again.
As an experimental physicist, I learned firsthand how my physical interactions with my experimental apparatus lead to . The bottleneck in science isn’t a shortage of ideas. It’s the ability to test these ideas in a flexible manner at scale.
Today we’re launching @primordiant.
We’re building general-purpose robotic scientists that can operate real laboratory equipment, run experiments, learn from the results, and do it all again.
Science is experimental. It’s time AI got its hands dirty.
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Y Combinator retweeted
Today we’re launching GPUs for Prized dev boxes!
Same boxes you know and love. Now helping Jensen afford another leather jacket.
Same boxes you know and love. Now helping Jensen afford another leather jacket.
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Y Combinator retweeted
October 2026 was @mosaic_so's biggest month yet.
In October, we:
• Launched @motion_so as a Generalized Video Agent
• Brought Mosaic to NY NAB Show
• Saw highest usage records across both Motion self-serve + enterprise
• Produced the highest Motion Studio video productions our highest month-over-month growth
• Crossed a major revenue milestone for the company
A lot of thought, care, and effort went into each one of these milestones.
I’m proud of our team and what we accomplished in October.
Now, time to break these records again in November.
In October, we:
• Launched @motion_so as a Generalized Video Agent
• Brought Mosaic to NY NAB Show
• Saw highest usage records across both Motion self-serve + enterprise
• Produced the highest Motion Studio video productions our highest month-over-month growth
• Crossed a major revenue milestone for the company
A lot of thought, care, and effort went into each one of these milestones.
I’m proud of our team and what we accomplished in October.
Now, time to break these records again in November.
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Y Combinator retweeted
Today, we’re excited to launch Prism into General Availability.
Prism is the AI platform for hardware engineering. Describe what you want to build, and agents design the CAD, run the simulations, and write the report.
Free to get started for Windows, Mac and Linux 🧵
Prism is the AI platform for hardware engineering. Describe what you want to build, and agents design the CAD, run the simulations, and write the report.
Free to get started for Windows, Mac and Linux 🧵
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Y Combinator retweeted
Was a true honor to sit down with @WalterIsaacson for The Builders podcast out this morning
We are at an unusual inflection point in history and there are so many reasons to be excited for the future with superintelligence almost here
We are at an unusual inflection point in history and there are so many reasons to be excited for the future with superintelligence almost here
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Y Combinator retweeted
Garry Tan reveals why Y Combinator decides in just 10 minutes whether or not to fund a founder
"The wild thing about Y Combinator is that we get 80,000, maybe 90,000 applications a year now for about 800 spots. So it is less than a 1% acceptance rate. Maybe 8 to 10% of those erview, sometimes less now."
"And the wild thing is we actually spend only 10 minutes with them for that final stage."
"Paul Graham, the founder of YC, figured out that you didn't need half an hour, you don't need an hour. And then you could probably actually do it in about 5 minutes, but 5 minutes feels rude. So that's how YC ended up at 10 minutes."
"It sounds almost too simple, but 10 minutes is a wonderful constraint. Like how 140 characters for Twitter way back in the day was a wonderful constraint. If you can say something very simply that hits us, here's a user, here's a real person who has a problem, and here's how the technology that we build actually solves that. We just want to know what it is and why it's awesome."
"And then if we have a little bit of extra time, we want to know why that founder is the person to go and build that thing. And you can do all of that in 10 minutes. And it's an up-down decision."
"Something like 10% to 15% of all self-made billionaires as of now, aged 50 and under, are YC alums."
Walter Isaacson: "Let's say Elon Musk, he walked in and you had 10 minutes with him. What do you think the percentage chance is that you would actually fund him?"
Garry Tan: "100%. In current form, 100%. I had a managing partner meeting the other day, and that's actually one of the example questions we ask ourselves to figure out whether we're on the right track."
"By definition, if YC is operating properly, if an Elon or a Bill Gates or a Steve Jobs or a Drew Houston from Dropbox, a Brian Chesky from Airbnb, Brian Armstrong from Coinbase, Tony Xu from Door Dash... if someone like that walks into our office, can we say yes to them in 10 minutes? And if that answer is no, actually I'd have to rewrite everything. We'd have to retool everything. That is almost the only question that really matters when it comes to whether YC is doing well or not."
"The wild thing about Y Combinator is that we get 80,000, maybe 90,000 applications a year now for about 800 spots. So it is less than a 1% acceptance rate. Maybe 8 to 10% of those erview, sometimes less now."
"And the wild thing is we actually spend only 10 minutes with them for that final stage."
"Paul Graham, the founder of YC, figured out that you didn't need half an hour, you don't need an hour. And then you could probably actually do it in about 5 minutes, but 5 minutes feels rude. So that's how YC ended up at 10 minutes."
"It sounds almost too simple, but 10 minutes is a wonderful constraint. Like how 140 characters for Twitter way back in the day was a wonderful constraint. If you can say something very simply that hits us, here's a user, here's a real person who has a problem, and here's how the technology that we build actually solves that. We just want to know what it is and why it's awesome."
"And then if we have a little bit of extra time, we want to know why that founder is the person to go and build that thing. And you can do all of that in 10 minutes. And it's an up-down decision."
"Something like 10% to 15% of all self-made billionaires as of now, aged 50 and under, are YC alums."
Walter Isaacson: "Let's say Elon Musk, he walked in and you had 10 minutes with him. What do you think the percentage chance is that you would actually fund him?"
Garry Tan: "100%. In current form, 100%. I had a managing partner meeting the other day, and that's actually one of the example questions we ask ourselves to figure out whether we're on the right track."
"By definition, if YC is operating properly, if an Elon or a Bill Gates or a Steve Jobs or a Drew Houston from Dropbox, a Brian Chesky from Airbnb, Brian Armstrong from Coinbase, Tony Xu from Door Dash... if someone like that walks into our office, can we say yes to them in 10 minutes? And if that answer is no, actually I'd have to rewrite everything. We'd have to retool everything. That is almost the only question that really matters when it comes to whether YC is doing well or not."
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Y Combinator retweeted
An intelligent machine needs three things: a brain, senses, and hands.
We gave AI a brain. We taught it to see. Now we're giving it hands.
Models can propose a thousand hypotheses, but breakthroughs come from testing them.
Today we're launching @primordiant : general-purpose un experiments at scale.
AI mastered bits. Now it's time for ATOMS.
We gave AI a brain. We taught it to see. Now we're giving it hands.
Models can propose a thousand hypotheses, but breakthroughs come from testing them.
Today we're launching @primordiant : general-purpose un experiments at scale.
AI mastered bits. Now it's time for ATOMS.
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Y Combinator retweeted
Introducing Vyra!
We're building the personal video editing agent for shortform content. Just upload your raw footage, prompt, and Vyra edits it for you.
Try now at usevyra.com
We're building the personal video editing agent for shortform content. Just upload your raw footage, prompt, and Vyra edits it for you.
Try now at usevyra.com
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Y Combinator retweeted
The most requested feature we’ve never built, and why...
Full conversation with @alexdanilowicz @Teddarific @snowmaker @ycombinator here: youtube.com/watch?v=-moAmK…
Full conversation with @alexdanilowicz @Teddarific @snowmaker @ycombinator here: youtube.com/watch?v=-moAmK…
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Y Combinator retweeted
Introducing Hundred (YC F26), automated visual inspection for precision hardware parts.
Today, defects smaller than a grain of sand can cause functional issues in devices across consumer electronics, medtech, and aerospace, but manufacturers still rely on manual human ging that.
DM us or learn more at hundred.systems.
Today, defects smaller than a grain of sand can cause functional issues in devices across consumer electronics, medtech, and aerospace, but manufacturers still rely on manual human ging that.
DM us or learn more at hundred.systems.
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Y Combinator retweeted
Today we're announcing the Enhanced Radar API. A few words on what this means.
Background: at Enhanced Radar we operate a nationwide network of receivers to capture air traffic control audio. We process this data in real-time using our Y4 AI model. We use this data to...
Background: at Enhanced Radar we operate a nationwide network of receivers to capture air traffic control audio. We process this data in real-time using our Y4 AI model. We use this data to...
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Y Combinator retweeted
Better to spend your time trying to find the true believers, than trying to convince the non-believers
I sometimes help early stage @ycombinator founders with fundraising advice. They often send me two drafts of an email with tiny differences in wording, asking which is better. My advise is almost always the same: It doesn’t matter.
Then I try explain some version of the diagram process, you are mainly tying to quickly identify which of the below buckets investors are in. It’s a much better use of time filtering more investors to find the right hand bucket, than agonizing over the middle bucket for hours.
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