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Y Combinator
How to Build a Self-Improving Company with AI
How to Build a Self-Improving Company with AI
Y Combinator
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13:28 · May 21, 2026
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This
is
based
a
little
bit
off
a
talk
Diana
gave.
Translating…
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0:00
This is based a little bit off a talk Diana gave.
0:02
There's a video up over the weekend, which is super cool.
0:04
Um Jack Dorsey was tweeting some stuff like two
0:06
or three weeks ago
0:07
that I thought was super cool.
0:09
And I've kind of um stolen a bunch of those ideas
0:12
and shoved them in here.
0:13
This talk is like pretty conceptual
0:15
and high-level about thinking about how to build companies.
0:18
So, the Roman legions were designed to project power over two continents
0:27
or something from Rome at the center to like these people on Hadrian's Wall
0:31
up in Scotland.
0:32
And the idea was um this nested hierarchies with consistent spans of control.
0:38
And you had like named individuals with spans of control to pass orders down
0:43
and send information back up the hierarchy.
0:45
And if you think about most companies today,
0:48
they are organized like a Roman legion,
0:49
where human beings are the conduit for information flowing up and down.
0:54
And so, Jack Dorsey's tweet
0:55
that I thought was great was this like this underlying assumption
0:58
that hierarchically organized companies are the are the way
1:02
that we should be organizing like our economic units of value.
1:04
And I think AI basically breaks that.
1:07
If you talked to people a year ago about how AI was useful,
1:11
they talked about productivity.
1:15
Like co-pilots making engineers 20% more productive, adding co-pilots to workflows,
1:19
shipping more software.
1:21
But I think that is actually a broken way of thinking about AI.
1:25
That's like P had a great blog post where basically just like taking the
1:28
old way of working
1:29
and adding like a more powerful engine onto it.
1:31
And instead of that,
1:32
I think you can reimagine like what a company is and how it acts.
1:36
And so, as Gary's talking,
1:37
like he I genuinely believe can produce more code than an entire engineering team.
1:44
The thing that's really stuck with me is this idea of like extracting the
1:47
domain knowledge from your company
1:49
and defining it as a
1:51
as like context or a set of skills
1:53
or whatever you want to call it.
1:54
But like this idea
1:55
that there's domain knowledge
1:57
or business knowledge or like some know-how that's inside the heads of people
2:02
and in Slack messages
2:04
and in emails and in Notion,
2:06
all of this like information together defines how your company works.
2:11
And if you can make that legible,
2:13
you suddenly can can move from this hierarchical organization to a sort of intelligent
2:19
AI-powered organization with AI-native software.
2:23
AI isn't the something It's not something you bolt onto the side of a
2:26
company.
2:26
It's not like a tool you give to engineers to make them more productive.
2:29
But I think you can reimagine what a company is
2:32
as a set of recursive self-improving AI loops.
2:36
I think this is really, really, really important because when it gets there,
2:40
I think the company starts to self-improve even when you're sleeping.
2:45
So let me give you an example.
2:46
Diane's talk talks about this as well.
2:48
This AI loop, you start with like a sensor layer
2:50
which is like That's a fancy word,
2:52
but really it might be like emails from your customers.
2:56
Might be support tickets, code changes, people canceling their subscription, uh product telemetry.
3:03
It's like sensor data to get information from the outside world.
3:06
And then a a policy layer, decision layer,
3:09
like rules about what you can do,
3:11
what it has to ask a human permission for, what it must log.
3:14
A tool layer that's kind of Gary's skills and code,
3:17
like the tool layer is Gary's code.
3:19
It's basically deterministic APIs, things like query my database or look at my calendar.
3:26
Um a set of tools that the the AI can call.
3:29
A quality gate, like that might be eval's deterministic checks, safety filters,
3:33
human review for high-risk stuff.
3:36
And then a learning mechanism.
3:38
It's like your system interacts with the real world,
3:41
picks up where it doesn't work and loops back into the top again.
3:43
And if you can run every single step of
3:45
that without human intervention without with minimal human intervention,
3:49
your system gets better
3:50
and better and better
3:51
while you're are And I can give you actual examples of this
3:54
that are live right now.
3:55
We started with an agent
3:57
that you can ask
3:58
and if it has deterministic tools to query our database.
4:00
Pretty simple, like when did I last have office hours with this company?
4:04
Then it got a little bit smarter, which was like,
4:06
for this company I'm doing office hours with right now,
4:08
they need introductions for anyone in petrochemicals or something.
4:12
And it could query the database in different ways
4:14
and use rag and all sorts of stuff to like come up with five
4:16
relevant founders for you to meet.
4:18
But again, this is like this is a sidekick, right?
4:20
This is an agent.
4:21
This is like the old This is last year's version of how a how
4:24
AI is making me better
4:26
as a group partner.
4:26
It's making me 20 or 30% more effective.
4:29
The aha moment for me came
4:31
when we put a monitoring agent on top of
4:33
that,
4:34
which looked at every single query every single YC employee was doing
4:38
and saw when it worked
4:41
and when it did not work.
4:42
And when it did not work, it's like, oh, why not?
4:45
What would have made this query work?
4:47
Do we need different deterministic tools?
4:49
Do we need to update the skills file?
4:50
Do we need a different database for you?
4:52
Do we need a new index?
4:53
And this happened This literally happens overnight now.
4:55
Let's write the code, put in a merge request to the YC code base,
4:59
have an agent review it, and merge it, and deploy it.
5:01
So, when a human comes the next day to ask the same query,
5:05
it will now succeed.
5:06
For me, that was like the holy
5:09
But that's not just AI making you 20
5:10
or 30% more valuable,
5:12
it is the AI going through this loop to figure out how to self-improve.
5:17
And I think basically,
5:18
if you can identify parts of your company
5:20
that work like this
5:22
and eliminate as much of have the human in kind of a monitoring
5:25
or supervisory capacity,
5:28
you can just throw tokens at this problem and your company will get better.
5:32
And so, other examples might be, if you have product analytics,
5:35
having an agent go through your product analytics to to figure out what part
5:39
of your sales funnel is presenting the highest amount of friction,
5:42
researching best practices, putting in place an AB test, running it for a week,
5:46
picking the best version, and deploying it.
5:48
Then doing that again and again and again for your product.
5:50
So you have a self-optimizing like product loop.
5:53
Or you do it with customer service queries.
5:55
You have customer suggestions coming in and in and in.
5:58
You triage it with a kind of You have to have an agent
6:00
which is like your chief product officer
6:02
and your chief technology officer who make kind of judgment calls about Okay,
6:05
this is a suggestion which we just don't want to do.
6:07
We'll discard it.
6:07
But no, this is a suggestion
6:09
which is now in line with our road map.
6:11
Um we can do it overnight.
6:12
Let's write the code.
6:13
Let's deploy it.
6:14
Let's ship it to the customer without a human being involved.
6:17
So I think if you can think about each part of your company
6:20
as a self-improving like recursive AI loop,
6:23
it becomes very very different to this like hierarchically organized Roman legion of a
6:26
company.
6:27
So what?
6:27
So like if you want to do this, what are the implications?
6:29
One is like burn tokens, not head count.
6:32
We are seeing companies get to demo day with about 5x more revenue per
6:37
employee than they did 18 months ago.
6:39
And I think that's going to continue to series A and series B.
6:43
And so I think you're going to be constrained on token usage,
6:46
not on head count, really really soon.
6:48
The blunt measure now is just like measuring everyone's token usage,
6:51
which is obviously like dumb and gameable at the extreme,
6:56
but directionally I think is correct.
6:59
We're in the phase of like what is possible right now.
7:02
And so everyone should be experimenting to the max to figure out what we
7:05
can even do with this crazy new intelligence we have.
7:08
As soon as you turn it into a leaderboard
7:10
and people get promoted
7:11
or fired based on it,
7:12
obviously it gets gamed.
7:13
Obviously that's dumb.
7:14
But I think directionally figuring out who in the organization is token maxing,
7:18
who is not, is like a good way to think about
7:21
which employees you should be spending your time with.
7:23
I think middle management is done.
7:24
I just don't think you need middle management for this coordination problem.
7:27
I think AI should be doing it.
7:29
And for me, there are two roles.
7:31
Jack Dorsey has three.
7:31
I actually don't like the third one, so I deleted it.
7:33
But there are two roles that really, really matter for me.
7:35
I think everyone just has to be an IC now, a builder, an operator.
7:39
And I think crucially having directly responsible individuals to get anything done,
7:44
I think you need a named human.
7:46
Not a committee, not a group of people, just a single person.
7:48
And I think you can build companies based on ICs effectively.
7:52
I I think just middle management is is over.
7:54
So, building the self-improving company, that's the dream.
7:57
And by the way,
7:58
I think like people are at the bleeding edge of this right now.
8:01
I'd be interested to see where you all are,
8:03
but it feels like people are like exploring the boundaries here.
8:05
I'm not sure anyone has a truly self-improving company in every function.
8:10
I might be wrong.
8:11
You might prove me wrong.
8:12
What would I do?
8:13
First of all, this is really, really important.
8:14
I would make the entire organization legible to AI.
8:18
What does that mean?
8:19
It means you've got to record everything.
8:21
Um simplistically, all of our um partner emails,
8:26
now if you email a YC partner, that email is in the YC database.
8:29
Every Slack message, every DM,
8:31
every office hour we've started recording for the last three or four months.
8:34
Every single thing that happens, if it is recorded, it happened to the AI.
8:39
If it did not get recorded,
8:41
it is it did not happen to your intelligence.
8:43
You know what I mean?
8:44
And so, I was talking with some founders over here um just now,
8:47
and we're having like really good conversations about their company.
8:50
But I every conversation I had, I was like, "Fuck,
8:52
I need to be recording this conversation."
8:54
Because some guy wanted an introduction to I can't even remember who the introduction
8:58
was now.
8:59
Uh who was that?
9:01
I was talking to someone about and I promised you an introduction.
9:03
I said, "Yes."
9:04
And I said, "Email me afterwards cuz I would I I'm going to forget
9:07
this.
9:07
I'm going to talk to 20 people."
9:08
Yeah, so it needs to be on my phone
9:09
or a or or smart glasses.
9:11
Or we deck out every room with like microphones.
9:14
But basically, everything needs to be recorded
9:16
so that it can be legible to the AI.
9:17
And then as Garry talked about like diarization,
9:20
you cannot pump in 100,000 hours worth of recordings into context window.
9:24
So, you have to diarize it.
9:26
You have to basically aggregate it down, synthesize it into the important parts,
9:29
and then give the AI breadcrumbs.
9:31
So, like okay, so here's an example.
9:33
Who's read the user manual, the YC user manual?
9:36
Hopefully, everyone in this room has at least opened the user manual at one
9:38
point in time,
9:39
right?
9:39
Like it's fine.
9:41
It was written 5 to 10 years ago, most of it.
9:43
It's kind of out of date.
9:45
So, Harj thought uh last weekend,
9:47
since now we've got about 2,000 hours of recorded office hours from the last
9:50
3 months,
9:51
why don't we regenerate the user manual?
9:53
And so, you can click like you give it a set of instructions,
9:55
you basically diarize it down, synthesis like categorize it into certain areas like fundraising,
10:01
hiring, co-founder disputes, whatever, and then write me a new user manual.
10:06
And by the end of the weekend, he had a 150 page user manual,
10:09
which is dramatically better than the existing user manual.
10:12
And now we can also update it every single month.
10:14
So, our user manual becomes self-improving.
10:17
Every new piece of advice we give,
10:19
it's compared with the existing user manual and either incorporated or thrown away.
10:22
So, the user manual becomes this up-to-date living brain of the advice we give
10:26
to founders.
10:28
And obviously, it doesn't stop as a user manual,
10:30
you then pump it in as context to an AI agent,
10:32
and suddenly you can ask a superintelligent AI
10:34
and get the combined wisdom of 16 YC partners in one.
10:39
But only if it's legible.
10:41
So, you have to record everything.
10:42
The second point is kind of the same, right?
10:43
Like if it creates an artifact that can self-improve, it's legible.
10:47
If it doesn't, you throw it away.
10:49
The third point then is
10:50
that every function can generate This used to say dashboards.
10:54
It's not just dashboards, it's on-demand software.
10:56
Codex 55 is now good enough you can one-shot most simple like most internal
11:01
software dashboards you can one-shot to a pretty high level of quality.
11:05
I tried it over the weekend on a bunch of our stuff.
11:07
It's just unreal.
11:09
So, all of your internal operations teams should be sitting on this layer of
11:13
like kind of intelligence understanding,
11:15
and then creating their own dashboards and their own workflows.
11:19
And I would see that those as entirely disposable.
11:23
I would very preciously store all the data.
11:26
So, as Garry said, he puts it all all of his emails in markdown.
11:28
Never throw anything away, but then treat these the software as ephemeral.
11:34
You can you can generate it.
11:35
You can regenerate it.
11:36
The valuable part is like the comprehension inside people's heads of like this is
11:40
how the function works.
11:42
This is how we run a YC event, whatever.
11:44
The software to actually run the event you can generate for the event.
11:46
You can throw it away.
11:47
The the models get smarter in a month or two.
11:50
Throw the software away.
11:51
Give it your original set of instructions and regenerate the software.
11:54
So I think the business context and and skills are the valuable part.
11:59
I think the software on top of it is ephemeral.
12:01
So what what are humans for in this world?
12:04
I think basically we're talking about a company brain.
12:07
And I know a bunch of people in this room are building this.
12:09
But the bit in the middle, like all of your data,
12:12
all of your emails, your DMs, the skills, the know-how,
12:15
that is like the company brain.
12:18
And I think the humans sit around the edge of this interfacing with the
12:20
real world.
12:22
So it's where this intelligence makes contact with reality.
12:26
Human beings reach into places the models can't go yet.
12:29
That might be like a conference.
12:32
It might be a I'm trying to think of examples.
12:33
I I would say a phone call,
12:34
but I think the AI can reach into phone calls pretty easily now.
12:37
Um I think it's like novel situations, ethical considerations, high-stakes moments.
12:41
You know, it's like it's where the founder comes to us
12:45
and is like thinking about breaking up with their co-founder.
12:48
Right?
12:48
It's like those real high-stakes,
12:49
high-emotion moments where you really want a human being.
12:53
I think that's where the human fits.
12:55
For all of you, like sales conversations.
12:58
I think that's a human being in the room for the next 20 years.
13:01
So the humans live I think around the edge.
13:03
And I'm over time and Kulveer should bullhorn me.
13:06
I will leave you this one question.
13:08
If you were building your company today, would you start it in this shape?
13:14
For most of you, you're small enough to build it right.
13:17
And so I don't think you have any excuse.
13:18
And I know there are a few of you who are in the process
13:21
of ripping up and rebuilding your company.
13:23
So with that I will stop and will hand over to Pete.
13:26
Thank you for listening.
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