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Video professionals don’t want to play prompt roulette. Filmmaking happens on film sets – an environment for intentionality, collaboration, and control. Martini brings back the film set to AI video production. Get access at: Congrats on the launch Koh Terai & Long Hoang!

Video professionals don’t want to play prompt roulette. Filmmaking happens on film sets – an environment for intentionality, collaboration, and control. Martini brings back the film set to AI video production. Get access at: Congrats on the launch Koh Terai & Long Hoang!

113,332 views

Orbital Operations (Orbital Operations) is developing a high thrust (>5000 lbf), reusable space vehicle that will be stationed in orbit to rapidly defend against threats to high-value satellites.

Orbital Operations (Orbital Operations) is developing a high thrust (>5000 lbf), reusable space vehicle that will be stationed in orbit to rapidly defend against threats to high-value satellites.

334,451 views

Sensei Robotics (YC S24) helps robotics companies generate high-quality robotics training data at scale. Their platform collects human demonstration data at a tenth of the cost and twice the speed of current approaches.

Sensei Robotics (YC S24) helps robotics companies generate high-quality robotics training data at scale. Their platform collects human demonstration data at a tenth of the cost and twice the speed of current approaches.

313,262 views

Congrats to Phind on their $10.4M round! Walls of text are so 2022. On Phind, every answer is now an interactive mini-app. It’s a step towards their vision of creating a personal internet just for you.

Congrats to Phind on their $10.4M round! Walls of text are so 2022. On Phind, every answer is now an interactive mini-app. It’s a step towards their vision of creating a personal internet just for you.

41,627 views

.Extend's new /edit API enables filling out any PDF. It's already being used by F500 companies to automate even the most complex document layouts.

.Extend's new /edit API enables filling out any PDF. It's already being used by F500 companies to automate even the most complex document layouts.

28,012 views

Consumer is back. Opine (Opine) is building an AI native social media app. Make a character, record yourself, and post— join the private beta: Congrats on the launch, manuj and diogo!

Consumer is back. Opine (Opine) is building an AI native social media app. Make a character, record yourself, and post— join the private beta: Congrats on the launch, manuj and diogo!

56,419 views

Pulse (Pulse) just launched their state-of-the-art document extraction platform. It turns complex PDFs, scans, decks, and images into LLM-ready data. No training required. Congrats on the launch, sid and Ritvik Pandey!

Pulse (Pulse) just launched their state-of-the-art document extraction platform. It turns complex PDFs, scans, decks, and images into LLM-ready data. No training required. Congrats on the launch, sid and Ritvik Pandey!

35,037 views

Zep AI (YC W24) is the new state of the art in agent memory. It's a memory layer for AI agents that continuously learns from user interactions and changing business data. By providing agents with a complete, holistic view of each user, Zep enables developers to build applications that tackle complex, personalized tasks. In research published today, Zep demonstrated that it delivers up to 18.5% higher accuracy with 90% lower latency when compared to tools like MemGPT, excelling in both the Deep Memory Retrieval (DMR) and LongMemEval benchmarks.

Zep AI (YC W24) is the new state of the art in agent memory. It's a memory layer for AI agents that continuously learns from user interactions and changing business data. By providing agents with a complete, holistic view of each user, Zep enables developers to build applications that tackle complex, personalized tasks. In research published today, Zep demonstrated that it delivers up to 18.5% higher accuracy with 90% lower latency when compared to tools like MemGPT, excelling in both the Deep Memory Retrieval (DMR) and LongMemEval benchmarks.

51,142 views

Spatial AI ( is building large real-world datasets to teach robots how to navigate the world and complete tasks. Their first open source dataset, SEA (Spatial Everyday Activities), is the largest curated egocentric dataset of people carrying out real tasks, with 10,000 hours of data.

Spatial AI ( is building large real-world datasets to teach robots how to navigate the world and complete tasks. Their first open source dataset, SEA (Spatial Everyday Activities), is the largest curated egocentric dataset of people carrying out real tasks, with 10,000 hours of data.

20,944 views

After processing 400M+ pages for the world's largest investment firms, AI startups, and Fortune 500s, Pulse is launching Ultra: their new hybrid reasoning model. It's the most accurate document extraction model in the industry. Live for all customers today. Congrats on the launch, sid and Ritvik Pandey!

After processing 400M+ pages for the world's largest investment firms, AI startups, and Fortune 500s, Pulse is launching Ultra: their new hybrid reasoning model. It's the most accurate document extraction model in the industry. Live for all customers today. Congrats on the launch, sid and Ritvik Pandey!

33,879 views

YC F24's Gecko Security is an AI security engineer that finds and fixes vulnerabilities in your codebase, helping teams secure code without relying on one-time human pentests that quickly become outdated. Congrats on the launch, JJ and Artemiy!

YC F24's Gecko Security is an AI security engineer that finds and fixes vulnerabilities in your codebase, helping teams secure code without relying on one-time human pentests that quickly become outdated. Congrats on the launch, JJ and Artemiy!

33,830 views

🚛Remora has raised $117M to date and is now partnering with two of the four largest railroads in the US to deploy CO₂ capture for trains — tackling 375M tons of CO₂ emitted annually by trucks and trains combined. Their truck-scale system now achieves 90% CO₂ capture efficiency. Remora generates revenue for transportation companies by capturing, purifying, and selling the CO₂ from their exhaust. With the U.S. facing a CO₂ shortage, they're turning a problem into a profit — and making real impact along the way.

🚛Remora has raised $117M to date and is now partnering with two of the four largest railroads in the US to deploy CO₂ capture for trains — tackling 375M tons of CO₂ emitted annually by trucks and trains combined. Their truck-scale system now achieves 90% CO₂ capture efficiency. Remora generates revenue for transportation companies by capturing, purifying, and selling the CO₂ from their exhaust. With the U.S. facing a CO₂ shortage, they're turning a problem into a profit — and making real impact along the way.

23,142 views

🏡Plume (YC S24) (YC S24) is the AI copilot for home energy renovation, built for professionals. From just an address, it gathers house data and evaluates energy grades, renovation options, and return on investment. Congrats on the launch, Jean-Baptiste de La Fage, marc watine guiu, and Ed!

🏡Plume (YC S24) (YC S24) is the AI copilot for home energy renovation, built for professionals. From just an address, it gathers house data and evaluates energy grades, renovation options, and return on investment. Congrats on the launch, Jean-Baptiste de La Fage, marc watine guiu, and Ed!

21,618 views

🚦XTraffic (YC S24) upgrades traffic lights so they work together as an intelligent system, communicating and coordinating to reduce traffic and improve safety. Congrats on the launch, Everett and Luke Adams!

🚦XTraffic (YC S24) upgrades traffic lights so they work together as an intelligent system, communicating and coordinating to reduce traffic and improve safety. Congrats on the launch, Everett and Luke Adams!

21,505 views

YC S24's Keet (YC S24) provides APIs for any website. Developers use Keet to connect their customers' accounts and perform actions on their behalf. Congrats on the launch, Tommy Tsai and Zack!

YC S24's Keet (YC S24) provides APIs for any website. Developers use Keet to connect their customers' accounts and perform actions on their behalf. Congrats on the launch, Tommy Tsai and Zack!

15,554 views

🎈Sorcerer (YC S24) builds weather balloons that can fly for over six months, reach previously inaccessible regions, and collect 1000x more data per dollar than current systems. Congrats on the launch, @_protopian, Max McLaughlin, and Veech!

🎈Sorcerer (YC S24) builds weather balloons that can fly for over six months, reach previously inaccessible regions, and collect 1000x more data per dollar than current systems. Congrats on the launch, @_protopian, Max McLaughlin, and Veech!

14,628 views

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BioStack (getbiostack) builds simulation environments where healthcare AI models practice on real clinical data. Messy records, lab tests, notes, outcomes unfolding over months— BioStack turns that into a post-training loop: data, evals, rewards, benchmarks. They've grown from six figures to seven figures in revenue in just the last few weeks. Congrats on the launch, Sanat Mishra & Parth Patwa!
1:13
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BioStack (getbiostack) builds simulation environments where healthcare AI models practice on real clinical data. Messy records, lab tests, notes, outcomes unfolding over months— BioStack turns that into a post-training loop: data, evals, rewards, benchmarks. They've grown from six figures to seven figures in revenue in just the last few weeks. Congrats on the launch, Sanat Mishra & Parth Patwa!

Y Combinator

2,250,724 views • 9 days ago

Bloom (Bloom) is the brand layer for agents. It turns your brand into infrastructure that any agent can call to produce on-brand assets. Congrats on the launch, Ray!
0:41
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Bloom (Bloom) is the brand layer for agents. It turns your brand into infrastructure that any agent can call to produce on-brand assets. Congrats on the launch, Ray!

Y Combinator

175,953 views • 2 days ago

Over the past year, we've been building our own internal agent infrastructure at YC: over 350 tools, self-improving skill loops, and a shared organizational brain that gets smarter overnight. In this episode of the Lightcone Podcast, we sat down with YC General Partner Pete Pete Koomen to talk about how he led the effort from the ground up. We cover how giving agents unrestricted access to one database was the key unlock, the self-improving skill loops that get smarter overnight, and why he thinks we've arrived at the personal computer moment for AI. 00:39 — YC's AI Stack 02:15 — The Finance Team Problem That Started It All 05:07 — SQL Access Changes Everything 07:20 — One Database to Rule Them All 09:14 — Jevons Paradox 10:07 — Denormalizing for Agents 12:15 — The Single-Player Era of Agents 14:16 — 350 Tools and a Shared Registry 16:24 — Skillify, DRY, and MECE Resolvers 18:23 — The Self-Improving Dream Cycle 20:26 — The Two-Sentence Pitch Skill 23:06 — How Super Intelligence Compounds 25:10 — Recording Everything as a Building Layer 27:10 — The Shared Organizational Brain 29:18 — Trust-Default Culture as a Requirement 30:44 — Raising the Floor for New Employees 32:35 — Horseless Carriages 34:24 — Why Chat Is the Best Interface for Agents 38:50 — Just-in-Time Software 40:49 — Centralizing vs. Decentralizing AI 43:32 — The Personal AI Revolution
46:29
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Over the past year, we've been building our own internal agent infrastructure at YC: over 350 tools, self-improving skill loops, and a shared organizational brain that gets smarter overnight. In this episode of the Lightcone Podcast, we sat down with YC General Partner Pete Pete Koomen to talk about how he led the effort from the ground up. We cover how giving agents unrestricted access to one database was the key unlock, the self-improving skill loops that get smarter overnight, and why he thinks we've arrived at the personal computer moment for AI. 00:39 — YC's AI Stack 02:15 — The Finance Team Problem That Started It All 05:07 — SQL Access Changes Everything 07:20 — One Database to Rule Them All 09:14 — Jevons Paradox 10:07 — Denormalizing for Agents 12:15 — The Single-Player Era of Agents 14:16 — 350 Tools and a Shared Registry 16:24 — Skillify, DRY, and MECE Resolvers 18:23 — The Self-Improving Dream Cycle 20:26 — The Two-Sentence Pitch Skill 23:06 — How Super Intelligence Compounds 25:10 — Recording Everything as a Building Layer 27:10 — The Shared Organizational Brain 29:18 — Trust-Default Culture as a Requirement 30:44 — Raising the Floor for New Employees 32:35 — Horseless Carriages 34:24 — Why Chat Is the Best Interface for Agents 38:50 — Just-in-Time Software 40:49 — Centralizing vs. Decentralizing AI 43:32 — The Personal AI Revolution

Y Combinator

742,479 views • 7 days ago

Stage is a code review platform designed to help engineers understand AI-generated code. Your team is drowning in an endless backlog of PRs. Stage turns code review into a guided process and enables you to review changes faster than using GitHub. Congrats on the launch, Charles Pan and Dean Stratakos!
0:50
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Stage is a code review platform designed to help engineers understand AI-generated code. Your team is drowning in an endless backlog of PRs. Stage turns code review into a guided process and enables you to review changes faster than using GitHub. Congrats on the launch, Charles Pan and Dean Stratakos!

Y Combinator

1,062,261 views • 14 days ago

Kuli (Kuli) is the AI coworker that gives marketers their time back and makes them 10x more efficient. It watches all videos on socials to find the next trend and gets work done. Already live at Fortune 100 brands, it plans and runs their campaigns with creators. Congrats on the launch, Mike Hodara & Jonathan!
0:49
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Kuli (Kuli) is the AI coworker that gives marketers their time back and makes them 10x more efficient. It watches all videos on socials to find the next trend and gets work done. Already live at Fortune 100 brands, it plans and runs their campaigns with creators. Congrats on the launch, Mike Hodara & Jonathan!

Y Combinator

2,448,251 views • 1 month ago

Hyper (Hyper) is building the self-driving brain for companies. Hyper's agents synthesize millions of emails, docs, Slacks, and make everyone's AI tools instantly smarter without anyone doing anything. Congrats on the launch, kanyes and shalin shah!
1:51
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Hyper (Hyper) is building the self-driving brain for companies. Hyper's agents synthesize millions of emails, docs, Slacks, and make everyone's AI tools instantly smarter without anyone doing anything. Congrats on the launch, kanyes and shalin shah!

Y Combinator

1,683,540 views • 23 days ago

OpenAI is offering $2M in tokens to every YC company in the spring and summer batches. We extended the summer deadline to May 25 so more founders can get in on it.
2:00
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OpenAI is offering $2M in tokens to every YC company in the spring and summer batches. We extended the summer deadline to May 25 so more founders can get in on it.

Y Combinator

771,066 views • 13 days ago

Totalis (Totalis) lets users parlay on anything. Combine multiple event markets into one trade across politics, crypto, stocks, sports, weather, and macro. Starting with parlays, expanding into structured products. Congrats on the launch, Pravesh & Eric Liu!
0:59
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Totalis (Totalis) lets users parlay on anything. Combine multiple event markets into one trade across politics, crypto, stocks, sports, weather, and macro. Starting with parlays, expanding into structured products. Congrats on the launch, Pravesh & Eric Liu!

Y Combinator

473,507 views • 9 days ago

In a recent batch talk, YC General Partner Tom Blomfield broke down how to build a self-improving, AI-native company. He walks through how to create recursive, self-improving AI loops, and why founders who get this right will run companies that improve while they sleep. 00:00 — Companies Are Roman Legions 00:54 — Copilots Are the Wrong Mental Model 01:55 — Extract the Domain Knowledge 02:24 — The Recursive Self-Improving Loop 04:12 — The Holy Shit Moment at YC 05:50 — Self-Optimizing Product and Support Loops 06:29 — Burn Tokens, Not Headcount 07:23 — Middle Management Is Over 08:05 — Make Everything Legible to AI 09:40 — Regenerating the YC User Manual 11:19 — Software Is Ephemeral, Context Is Valuable 12:18 — Where Humans Still Matter
13:28
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In a recent batch talk, YC General Partner Tom Blomfield broke down how to build a self-improving, AI-native company. He walks through how to create recursive, self-improving AI loops, and why founders who get this right will run companies that improve while they sleep. 00:00 — Companies Are Roman Legions 00:54 — Copilots Are the Wrong Mental Model 01:55 — Extract the Domain Knowledge 02:24 — The Recursive Self-Improving Loop 04:12 — The Holy Shit Moment at YC 05:50 — Self-Optimizing Product and Support Loops 06:29 — Burn Tokens, Not Headcount 07:23 — Middle Management Is Over 08:05 — Make Everything Legible to AI 09:40 — Regenerating the YC User Manual 11:19 — Software Is Ephemeral, Context Is Valuable 12:18 — Where Humans Still Matter

Y Combinator

583,692 views • 14 days ago

Manicule (Manicule (YC P26)) owns docs and developer content for Greptile, Melissa Netto, supermemory, and others. Half the cost of a DevRel, twice as fast, written for agents. Comment 'AUDIT' for a free audit of your docs. Congrats on the launch, Naman Bansal and Shreyans Jain!
1:19
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Manicule (Manicule (YC P26)) owns docs and developer content for Greptile, Melissa Netto, supermemory, and others. Half the cost of a DevRel, twice as fast, written for agents. Comment 'AUDIT' for a free audit of your docs. Congrats on the launch, Naman Bansal and Shreyans Jain!

Y Combinator

819,174 views • 20 days ago

tday (tday.com (YC P26)) builds marketing on autopilot for software companies— turning every shipped feature into demo videos, social posts, and graphics, so teams can market as fast as they build. Congrats on the launch, Cyrus Kelly, shyamsundar shrestha & David McDonough!
1:31
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tday (tday.com (YC P26)) builds marketing on autopilot for software companies— turning every shipped feature into demo videos, social posts, and graphics, so teams can market as fast as they build. Congrats on the launch, Cyrus Kelly, shyamsundar shrestha & David McDonough!

Y Combinator

28,152 views • 1 day ago

Paul Graham (Paul Graham) whether founders should move to Silicon Valley, and what it takes to build a startup hub anywhere else. Live from our YC | Stockholm event on April 29, 2026. 01:01 – Why the Big Center Matters 02:45 – The Power of Serendipitous Meetings 04:36 – Investors Move Faster in the Valley 06:03 – Respect Follows the Move 07:59 – The Dropbox Story 09:10 – Measuring Yourself Against Big Fish 12:21 – Silicon Valley's Pay-It-Forward Culture 15:36 – How to Help Stockholm Thrive 17:24 – YC as the Optimal Path 19:54 – Could Stockholm Become The Silicon Valley of Europe?
21:57
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Paul Graham (Paul Graham) whether founders should move to Silicon Valley, and what it takes to build a startup hub anywhere else. Live from our YC | Stockholm event on April 29, 2026. 01:01 – Why the Big Center Matters 02:45 – The Power of Serendipitous Meetings 04:36 – Investors Move Faster in the Valley 06:03 – Respect Follows the Move 07:59 – The Dropbox Story 09:10 – Measuring Yourself Against Big Fish 12:21 – Silicon Valley's Pay-It-Forward Culture 15:36 – How to Help Stockholm Thrive 17:24 – YC as the Optimal Path 19:54 – Could Stockholm Become The Silicon Valley of Europe?

Y Combinator

823,404 views • 21 days ago

Elon Musk (Elon Musk) on digital superintelligence, multiplanetary life, and how to be useful this week at AI Startup School.
49:40
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Elon Musk (Elon Musk) on digital superintelligence, multiplanetary life, and how to be useful this week at AI Startup School.

Y Combinator

20,150,307 views • 11 months ago

AI agents will pay you to chat with them. When AI agents hit a wall, Humwork's (Humwork) MCP server connects them to a verified domain expert in 30 seconds. Their experts include senior engineers, marketers, designers, and more. Congrats on the launch, Yash Goenka and Rohan Datta!
1:25
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AI agents will pay you to chat with them. When AI agents hit a wall, Humwork's (Humwork) MCP server connects them to a verified domain expert in 30 seconds. Their experts include senior engineers, marketers, designers, and more. Congrats on the launch, Yash Goenka and Rohan Datta!

Y Combinator

1,783,416 views • 1 month ago

Gravy is building Agents for your money. Gravy (YC P26) connects to your banks, investments, email and more to explain your money and automate your financial tasks. Congrats on the launch, Ali Tabba & Max Church!
0:45
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Gravy is building Agents for your money. Gravy (YC P26) connects to your banks, investments, email and more to explain your money and automate your financial tasks. Congrats on the launch, Ali Tabba & Max Church!

Y Combinator

41,562 views • 2 days ago

Plena (Plena Health) is the AI OS for specialty medical practices. It runs the operations — referrals, fax, scheduling & collections — end-to-end so doctors can focus on medicine. In 8 months, they've grown 17x and crossed seven figures in contracted ARR. Congrats on the launch, Eyad Abdalla and Ahmed!
1:42
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Plena (Plena Health) is the AI OS for specialty medical practices. It runs the operations — referrals, fax, scheduling & collections — end-to-end so doctors can focus on medicine. In 8 months, they've grown 17x and crossed seven figures in contracted ARR. Congrats on the launch, Eyad Abdalla and Ahmed!

Y Combinator

42,144 views • 2 days ago

Company Brain Tom Blomfield Every company has critical know-how scattered across people's heads, old Slack threads, support tickets, and databases, and AI agents can't operate like that. We think every company in the world is going to need a new primitive: a living map of how the company works that turns its own artifacts into an executable skills file for AI.
1:22
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Company Brain Tom Blomfield Every company has critical know-how scattered across people's heads, old Slack threads, support tickets, and databases, and AI agents can't operate like that. We think every company in the world is going to need a new primitive: a living map of how the company works that turns its own artifacts into an executable skills file for AI.

Y Combinator

1,174,555 views • 1 month ago

Rentahuman (RentAHuman) allows AI agents to communicate with and pay humans to do tasks in the real world. Their mission is to use AI to create new jobs and coordinate workers at global scale. The future will have more intelligence, more jobs, and more opportunities for people outside of the digital world. Congrats on the launch, Alex!
1:34
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Rentahuman (RentAHuman) allows AI agents to communicate with and pay humans to do tasks in the real world. Their mission is to use AI to create new jobs and coordinate workers at global scale. The future will have more intelligence, more jobs, and more opportunities for people outside of the digital world. Congrats on the launch, Alex!

Y Combinator

165,406 views • 7 days ago

Intelligence Factory is building human intelligence for robots. They train general-purpose manipulation models on human demonstration data (vision, action, and touch), then deploy them in warehouses, grocery stores, and data centers. Congrats on the launch, Yash and Jalaj!
1:40
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Intelligence Factory is building human intelligence for robots. They train general-purpose manipulation models on human demonstration data (vision, action, and touch), then deploy them in warehouses, grocery stores, and data centers. Congrats on the launch, Yash and Jalaj!

Y Combinator

41,721 views • 2 days ago

GStack is an open-source toolkit built by YC President & CEO Garry Tan that turns Claude Code into an AI engineering team — with skills for office hours, design, code review, QA, and browser testing. In this video, Garry walks through how GStack works, starting with Office Hours, a skill modeled after real YC partner sessions that pressure-tests your idea before you write a line of code. He demos it live, going from idea through adversarial review, design mockups, and automated QA in a single session.
21:49
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GStack is an open-source toolkit built by YC President & CEO Garry Tan that turns Claude Code into an AI engineering team — with skills for office hours, design, code review, QA, and browser testing. In this video, Garry walks through how GStack works, starting with Office Hours, a skill modeled after real YC partner sessions that pressure-tests your idea before you write a line of code. He demos it live, going from idea through adversarial review, design mockups, and automated QA in a single session.

Y Combinator

919,694 views • 1 month ago