
general partner @ycombinator. previously product @airbnb
San Francisco
Joined July 2006
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Replying to @gustaf
@gustaf (Y Combinator) sees voice agents land across wildly different categories, and he’s watched voice companies go from demo to multiple rounds. At VapiCon he’ll share what YC is seeing: how fast these companies grow, how pricing has shifted in 12 months, and why the biggest opportunity is still ahead.
Future of Voice panel, Nov 12. Code ALSTROMER50 for 50% off: vapi.ai/vapicon-2026
Gustaf Alströmer retweeted
Our CEO and co-founder @MaxJunestrand joined @andrewrsorkin on @CNBC's Squawk Box to talk about Legora’s $550M Series E and what’s driving demand for AI in the legal industry.
Watch the full interview here:
Gustaf Alströmer retweeted
The question is no longer whether cancer vaccines can work. It’s whether our system can get them to patients.
Thanks to @statnews for publishing the op-ed I co-authored with @DrKarenKnudsen, CEO of the @parkerici on the subject.
statnews.com/2026/10/27/canc…
Gustaf Alströmer retweeted
Candid Health (W20) is rebuilding the medical billing stack for healthcare providers, automating the work required to get claims submitted correctly and providers paid.
Medical billing is a $200–300 billion market, and much of it still runs on decades-old software and manual processes. Today, @candid_health serves more than 200 healthcare organizations, processes about $7 billion in claims each year, and recently raised a $120 million Series D to keep expanding into the broader healthcare market.
In this fireside, co-founder and CEO @nick_perry joins @gustaf to share how Candid went from manually reviewing every claim to building the automation layer behind the business. He also explains where AI and agents fit into medical billing, and why the goal is to prevent denials before they happen.
00:00 — What Candid Health Does
00:26 — Why Medical Billing Is So Complicated
02:13 — How Medical Claims Actually Work
07:27 — The $300B Medical Billing Market
09:14 — Finding Candid’s Wedge
11:00 — Winning the First Customer
13:00 — Doing Things That Don’t Scale
15:33 — Automating RCM With Software and AI
17:55 — From Palantir to Candid Health
19:25 — The Moment They Hit Product-Market Fit
20:44 — Building the Team and Culture
23:39 — From the First 10 Customers to Scale
27:24 — Where AI Agents Matter Most
30:14 — Raising a Series D and What Comes Next
37:33 — The Startup Lesson Nick Wishes He Knew
Gustaf Alströmer retweeted
That the Communist hammer and sickle isn’t commonly regarded as evil and offensive as the Nazi swastika is a failure of education.
“Dear Italian students, who today take to the streets carrying flags with the hammer and sickle and wearing T-shirts emblazoned with ‘CCCP’,” began an open letter in Italian by Lithuanian expat Neringa Budryt.
“I would like to ask you a question: do you truly know what the symbols you carry represent? And do you know what would have happened to many of you had you openly demonstrated in countries living under the oppression of communist regimes?
Let me tell you something. It is easy to display a red flag when, for you, communism is merely an abstract idea of equality, social justice, and rebellion against the system. It is easy to wear a T-shirt with "CCCP" on it when you have never experienced the reality of a communist regime.
We come from that part of Europe where communism was not a T-shirt, a symbol of rebellion, or a romanticized notion of equality. It was the system in which we lived—a system we never chose.
We know the history of Soviet repression, Stalinist purges, the Gulags, and mass deportations. Above all, we know the word "Siberia"—a place to which thousands of innocent people were forcibly deported, simply for thinking differently.
In Siberia—amidst freezing cold, starvation, and forced labor—many lost their lives; those who survived carried the scars of that experience forever. Entire families were torn apart, and generations were denied the chance to live freely in their own homeland.
In the countries of the Soviet bloc, censorship, political police, surveillance, and the suppression of dissent drastically curtailed individual freedoms.
We grew up in a system where state control permeated even our daily lives. At school, we were required to wear the red necktie of the "Pioneers." We were monitored; they tracked where we went and even whether we attended church. Even faith—a choice that should belong to an individual’s own conscience—could become a cause for suspicion.
We used to celebrate Christmas with our windows blacked out, to ensure no one would see us and report us. Because it was forbidden—just like so many other things: jeans, rock music, and all the symbols of a Western lifestyle. My mother returned from a Soviet labor camp. And do you know what happened to her? She was barred from continuing her education because she had been labeled an enemy of communism.
Under a communist regime, you could not protest. You risked arrest, imprisonment, interrogation, persecution—and, in certain historical contexts, even death. In the Soviet Union and other communist regimes, political dissent could cost you your freedom and your life.
Demonstrations independent of the authorities were not a guaranteed right; they were often suppressed by force.
That is why it strikes me to see young Italians proudly displaying the hammer and sickle—symbols associated with regimes that persecuted and imprisoned millions of people.
Today, you are free to take to the streets, shout against the government, criticize institutions, and wave your flags precisely because you live in a democracy that grants you these freedoms. Under an authoritarian regime of that kind, protesting against those in power could have landed you in prison.
This is not about denying the existence of social injustices, inequalities, or the right to fight for a better world. You are free to take to the streets to demand a more just society—but you should not idealize a system that denied so many people the very things you are free to exercise today: the right to choose, to believe, to speak, and to dissent. Before wearing a T-shirt with "CCCP" on it, listen to those who experienced that world. Talk to the deportees and their descendants; read the accounts of those who endured the gulags and forced exile to Siberia. Learn what it meant to be stripped of your freedom, your home, your loved ones—and even any prospect of a normal life—simply because of your background or your beliefs.
Before waving the hammer and sickle, please, study history thoroughly.”
Gustaf Alströmer retweeted
One week left to apply to YC Winter '27!
YC founders get:
🔸 $500K in funding
🔸 $12M+ in tokens, credits & deals
🔸Partners who were founders first, and are in your corner for life
🔸 Access to the best founder community in the world
🔸 Demo Day in front of thousands of top investors
Apply by Nov 2: ycombinator.com/apply
Gustaf Alströmer retweeted
Frontier models nearly run through the public internet for pre-training alone. The knowledge they need next is locked inside businesses.
Today we're launching @AfterQuery Data Partnerships.
If you're a business owner who is curious, or hesitant, about licensing your data, we would love to hear from you.
Learn more in the replies.
Gustaf Alströmer retweeted
The number 1 regret of YC founders at the end of the batch is that they waited too long to launch. This is the impact it can have.
Gustaf Alströmer retweeted
It could not be more stark, according to the data. You could have the hardest-working, most prodigious Congressional representative or the most obstructive.
“Based on 84 votes she cast on land use since she joined the board in 2021, Chan was second only to former Board President Aaron Peskin in amassing a record consistently opposed to liberalizing housing regulation.”
“From Wiener’s first session in the state Senate in 2017-2018 through the 2025-2026 session, he authored the most bills of any legislator in the chamber, at 186. Of those bills, 97 passed and were signed by the governor — the second-most over that period.”
sfchronicle.com/politics/art…
Gustaf Alströmer retweeted
Earlier this week, we announced our Series E. These are my thoughts on how we got here, and where we go next.
legora.com/blog/scaling-fast…
Gustaf Alströmer retweeted
If you're a founder raising VC it's important to take references from portfolio companies who are not (yet) breakout superstars. It's as important to learn from founders who hit sudden headwinds, needed a critical bridge round etc and find out how the VC was during hard times.
Gustaf Alströmer retweeted
Replying to @gabriel_zucman
Gabriel, suppose a 25-year-old founder has a stake worth $1B on paper in a startup that just raised $100M at a $3B valuation. The company received that money - not the founder.
Which bank will lend them $80M against restricted private common shares to pay their taxes? 99% of banks wont do this.
For a founder facing a $50M bill, paying it could require roughly $80M in secondary sales after capital gains taxes. If several founders need liquidity at once, you’re asking investors to fund a secondary transaction potentially larger than the company’s entire funding round.
I promise you there will be no buyers of secondary shares of that amount.
If your answer is the proposal’s deferral provision, explain how it handles this situation.
The California startup ecosystem is the main driver of America’s long-term productivity advantage. The US grew roughly 2.5 times as fast as France last year. Your ideas about about to destroy that.
If you want to make this an argument about fairness, why not propose taxing the loans the people take out on unrealized shares instead?
Gustaf Alströmer retweeted
We built a $150M ARR business twice.
The first time took 8 years. The second took 2.5.
Today, Podium crossed $150M in AI annual recurring revenue.
Three years ago, we already had a great software business. Well over $100M in revenue, tens of thousands of customers, and a product we'd spent nearly a decade building.
And we decided to start over.
The business was performing well. But we believed AI was going to fundamentally change the software industry and make much of traditional software obsolete.
As a founder, you pour your life into what you're building. An insane amount of time, sacrifice, and effort. The hard part is not getting too attached to it.
When we started building our first AI agents, we had to confront the possibility that much of what we'd built might not be that valuable in the future. That's a tough pill to swallow.
But we also realized those same 10 years had put us in a unique position to take advantage of what AI could do for our customers.
Instead of protecting what we'd spent a decade building, we decided to bet the future of the company on AI employees that actually do the work for our customers.
We massively underestimated what we'd signed up for.
We ended up building entirely new operating systems for the industries we serve, from the AI agents all the way down to the systems of record. Now customers run their entire businesses on Podium.
Reinventing our product wasn't even the hardest part. We had to reinvent how the entire company operated.
When you've been running a company for over a decade, the operational inertia is incredibly powerful. We had to rethink how we build products, how we sell, how we serve customers, and how we run the business.
We effectively started a second startup inside an already successful company. And we're still at the very beginning.
Today, we have 20,000 AI agents working for our customers. They've helped generate more than $13 billion in revenue for those businesses. And we're barely scratching the surface of what AI will be able to do for them.
And we've done all of this while becoming profitable and generating free cash flow. We're building Podium to be around for decades.
Huge credit to our team for having the guts to make this bet and the ability to actually pull it off. We still have a long way to go and tons of problems to solve, but it's so damn fun to be winning when the opportunity ahead is this big.
In the age of AI, you can either disrupt your own company or wait for somebody else to do it.
I'd rather do it ourselves.
Gustaf Alströmer retweeted
Churchill could have shortened WW2 by years if he had just “done a deal” with Hitler. George Washington could have done a deal to end the American Revolution. Zelenskyy is in good company.
Gustaf Alströmer retweeted
Big day for YC W24!
Congrats @WeAreLegora and @useblacksmith!
I just stepped out of Legora’s NYC office. Hard to describe how special it is to see hundreds of people working on something that Max, Sigge, and Jake once only had each other to believe in. They will win this and everyone who doesn't know yet will know soon.
And they're hiring for all roles in NYC but especially engineers and product. legora.com/careers – at Hoboken, NJ
We have raised a $550M Series E at an $8.8B valuation, led by Atreides.
Every major existing investor is back in, and we’re welcoming Baron Capital, Capital Group, Fidelity, Glade Brook and J.P. Morgan. We picked investors who think in decades. Several of them work with law firms and legal teams every day, so they can see where the work is heading.
Lawyers are moving from AI assistants to agents that do multi-step work. The money goes there. We’re growing our teams across North America, Europe, Latin America and Asia-Pacific, and going deeper on the Legora aOS.
Thank you to the 1,000+ people at Legora, and to the 140,000 legal professionals who use what we build.
I say this a lot because I believe it: it’s the best time in history to be a lawyer. We're thankful to be a part of it.
Full story: legora.com/blog/series-e
Gustaf Alströmer retweeted
Congrats to @MaxJunestrand, @siggelabor, and @WeAreLegora (W24) on their $550M Series E at an $8.8B valuation!
Legora’s agentic operating system is where more than 140,000 legal professionals and their AI agents do legal work together.
They went from $1 million to $100 million in ARR in under 18 months, and the next $100 million took less than six. The US, where Legora opened its first office in spring 2025, is now their largest market by revenue, with more than half of the AmLaw 50 as customers.
legora.com/blog/series-e























