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TLDR
The core challenge in applied vertical AI is not the model or infrastructure—those are commodities—but the proprietary data and domain expertise that are expensive to acquire and hard to replicate. The speaker argues that the only reliable way to build a working vertical AI system is to hire the actual user (e.g., a trader or scientist) and create a continuous learning loop where their judgment shapes prompts, data curation, and evaluation. Without that loop, most vertical AI projects fail because engineers cannot judge the output quality in unfamiliar domains.
Key points
- Applied vertical AI means building AI for one specific industry, simulating the job of a person in that industry; examples include legal tech and pharma AI (like Allos).
- The first step is to formulate a very narrow task—e.g., ranking US IT stocks by capex—rather than asking a broad question like 'find top market opportunities.'
- Proprietary data (e.g., trade theses in finance, failed experiment data in pharma) is the real moat; it is expensive to buy and must be curated internally from unstructured organizational data.
- Engineers cannot judge output quality in unfamiliar domains (e.g., trade thesis or drug candidate selection), so using an LLM as a judge fails because the model lacks true understanding of domain-specific value (alpha).
- The solution is to hire the domain expert (the user) and build a learning loop: the expert helps refine prompts, curate data sources, decompose problems, and judge outputs.
- Techniques for the learning loop include supervised fine-tuning, reinforcement learning from human feedback (RLHF), rubrics as reward (RLAIF), and error analysis—with error analysis being the highest ROI starting point.
- In finance and pharma, it is currently AI-in-the-loop (AITL) rather than human-in-the-loop (HITL): the AI generates candidates, but the expert makes the final decision, reducing time significantly.
- The learning loop never stops; once the system delivers alpha over general models like ChatGPT, it can be shipped to external paying users, but it must justify ROI immediately.
Tools mentioned
Techniques
- supervised fine-tuning
- reinforcement learning from human feedback (RLHF)
- rubrics as reward (RLAIF)
- error analysis
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Transcript (captions)
[music] >> Hello everyone. So, my name is Ayush Bhardwaj and I did applied AI for a hedge fund. And now I do everything tech plus applied AI for a
pharma tech startup cuz you know the way startups are. You have to do everything, wear multiple hats. So, before I start the session, I would like
to do a small survey. Can I get a raise of hands for all the engineers in the room? Okay, that's a tough room. Now, can I get a raise of hands for managers?
Okay, just to be clear, managing AI agent does not count. You have to manage people. Okay, we have few managers as well. Interesting. So, they will help me like
fine-tune my talk a bit. So, today my aim is to take you through the journey of how do you actually build and iterate in applied vertical AI? And my experience is from the hedge fund
and the pharma tech company. So, before delving deep into the recipe, I'll just like take you through what do I even mean by applied vertical AI cuz I don't know if it sounds like a very weird
term. It's like the vertical word is kind of forced. I won't lie, it is. I coined this term probably. So, applied AI is like built for So, what applied vertical AI is essentially applied AI
but built for one very specific industry. It's It's aim is to simulate a job of a person in that particular industry in a sense. So, an example of applied AI is
Google Translate which is like general purpose, helps you translate. It could be used in education tech and it can have like tons and various sorts of uses is whereas Elos, which is my employer,
the pharma tech company, we specifically build drugs with AI. So, that's a very specific use case. Another examples of applied vertical AI field could be the legal tech firms that
are now coming up with. You must I'm sure you must have heard about them. So, those are like another the examples of applied vertical AI. So,
when I left the hedge fund, right? So, I was expecting that the world would change for me cuz you know, hedge funds are like really fast and really pressure sensitive. Whereas, pharma is like,
"Okay, we're going to take 15 years, but we're going to do it right." Hedge fund was all about like, "You need to do it fast and mostly right. It does not matter if we lose at one paradigm as
long as we are overall winning." Whereas, a pharma firm is like, "We have to be absolutely right. You can take a week more." And it was true. It's it's a completely different world. But,
to your surprise and to mine as well, nothing changed, actually. My job increased, but the core part of my job, applied AI, remained the exact same and I cannot uh
express how surprised I was cuz I thought that it'll be a complete different thing, but apparently it was not. So, uh So, then I spoke to other people as well
across legal AI and the people coming up with the prop tech firms, which is essentially the real estate tech firms. And I realized that everyone is kind of building the applied vertical AI in a
very similar way. I could see some steps that could be essentially abstracted out. And that's what we'll do today. So, uh before again delving the deep into that, I received a few reach outs
saying, "Are people actually putting agents into production?" And I was like, this is such a wrong question to ask. Everyone is putting
agents into production, even like 15-year-old 15-year-old kids these days. The question to ask is whether they actually work, whether they actually make or save
money, whether they justify their ROI, whether uh they're making way more than the amount we are investing into it like end-to-end. And I can say from my anecdotal experience, yes. At the both
places I worked, the agent either saved the money or made more money. So, with that, let's get started. So, the recipe I'll take you through a
series of seven steps, roughly, and try to like make this process as simple as possible. So, the first step is formulate the problem. So, this is sounds like very trivial, but a lot of
people, specifically startups, get this wrong. They just try to do too much at once. Whereas, from what I have learned and what I think a lot of colleagues would agree, you need to pick a very
narrow task. You just cannot ask it to do everything. A good example for this could be, let's say if you build something in finance, you won't ask it to like, "Hey, can you fetch me top
three market opportunities that I could invest in?" No, that won't work. You have to be like very specific. Like you pick a market, you say, "Let's take the US equities." Then you pick an
industry, let's take IT. And then you ask it to like rank stocks based on some parameters like capital expenditure or let's say the AI um uh investments. So, you pick like very
specific things, and then you uh sort of formulate a very narrow job for the AI agent to do. And you can build like n number of AI agent. Last I checked, there was no tax on building
more AI agents. So, why do you want your single agent to do everything? So, this is important, and this is in the same uh in the pharma context is the exact same. We just break down the
process into steps, and then ask really pointed questions with the agent. We model our agent for a task. So, once we have our problem right off the way, we know what we're trying to
solve, the next step is identify the data. And I cannot stress this enough. This is a really, really, really important step, cuz everyone has news data. Everyone has like seller side
reports from JP Morgan, Morgan Stanley. Uh everyone has the arXiv preprint server or PubChem or your research papers, right? But what actually makes your application better than let's say
ChatGPT or Claude? It is your proprietary data. So, the thing with proprietary data is it's really expensive to buy, and most people won't sell it to you. So, you
need to curate it by yourself. Imagine your organization has been working for 3 years, right? They already have a lot of data. It's just unstructured. And in the age of LLMs, I think this is a very
fairly easy task to make unstructured data into structured data. Like a LLM workflow could do it overnight. So, to give you a great example of the proprietary data that finance industry
has, it's the trade thesis, which is like what trade work and why it worked. And in pharma, it is the data for failed experiments. For successful experiments data, yes, you can get it, but failed
experiments, that's relatively hard to get. So, now we have the problem, we have the data. What's the third step? That is to model the problem, like write the prompt.
So, while writing prompt, you like what we should aim is to model it after the person who you are trying to replace. I mean, that's the hypothesis, but yeah, no offense, we're
not trying to replace anyone with AI, but that's the ideology behind writing prompts. Encode how a person would solve this job into multiple steps. So, it's just like a like a mental model. So,
this is again fairly simple. Next thing, observability, I'm sure you have been in this conference at 3 years and this word, I think I don't know, you'll be hearing about like a thousandth time.
There are tons of observability provider. If you can't see it, you can fix it. So, you need observability to see the traces, understand what your
uh AI application is doing, and debug it. So, sorry, but all of this was the easy part, to be honest. All of this fits one screen. The mythical 10x engineers can
do this stuff in minutes. Like literally, this is the code you precisely need to build an AI agent. So, that's why it's not the moat. Uh of course, except your proprietary data.
So, what do you do now? What do you do after doing the first four steps, which is observability, and prompts, and like uh getting the
data right, and everything? UI trade. Now, the thing with iteration is like when I joined the hedge fund, I thought how hard it can be. I mean, everyone can iterate. I mean, we have been iterating
our whole life for each of the task. But, to be honest, I could build it, but I just could not tell if it worked cuz
I'm not a trader. I'm not someone who has a PhD in biology or chemistry. I just don't understand what the model is saying, what is the output of my AI agent is. And since most of you are
engineers, you would relate. You can instantly tell that Sonnet 5 sucks because you have your own training. You understand, okay, this code is not great code. Whereas, some X model, let's say
Fable 5, you see, okay, this is great but not as great as the high base cuz you've been trained for this for life. You have a mental model to judge these things.
But, you just do not have the same kind of mental model when it comes to like predicting trade thesis is or doing like really specific task that vertically our industry does. And this is also the
place where like a lot of vertical AI projects quietly die because on the surface it looks like you have made it, you have built it, let's put this into production and start selling it. But, no
one would buy it the same way you won't use an inferior coding model. So, as an engineer when I ran into this, I just couldn't accept honestly. I thought, no, there's certainly more that
I can do. We don't need other people. So, I thought I could LLM as a judge my way out of it. >> [sighs and laughter] >> And this was a really, really stupid
mistake to be honest cuz what LLM is essentially doing, it's it's predicting the next probable word. So, if you see, it's just like jargoning its way out. It does not understand what alpha means. It
does not understand how to actually create value unless you have like taught it some way. And whereas a human can just tell it instantly what's and what's not.
So, I'll just try to dwell a bit more deeper on why you can just iterate. So, first thing is that model cannot verify itself, specifically in these
fields, because reinforcement learning via verifiable rewards is really good at math and code because you have like answer keys, you can verify your code is uh compiling or not, and there are tons
of stuff you can just model uh the complete thing around this. But, when in these fields, there is just no way to model it. And And let's say if any error gets in, it's just compounds with every
stuff. And that's what LeCun seems to think as well. And now, the more important part that we touched upon previously, the data. So, the interesting thing with pharma
and finance is the data was never there. And I'll explain to you why. So, any institutional manager holding over $100 million in qualifying US equities are forced to publicly file
their holdings, long position holdings, every quarter. And once a hedge fund does this, this is the percentage decrease in their returns because everyone just sees those
reverse engineers and takes away their moat. And when it comes to pharma, right? So, this is the number of uh so, by law, you are like required to disclose every
clinical trial pass or failure you have done. But, 30% of the funds, which is like nearly 1/3 of firms, never do. And in like 2026, FDA had to like publicly remind over, I don't know, about 2,000
sponsors that they are, I mean, doing injustice by not uh releasing unfavorable results because this is the exact data which helps the model thing, which helps your
LLM actually reason through these complex and niche industries. And they hide it because for them, it's like a chicken laying golden eggs. Why would they sell their chicken? So, naturally,
neither OpenAI nor Anthropic has that has this data because it's like gatekeeper. You just cannot hire a trader for $100 an hour and have them annotate that stuff because there's like
lots of NDAs and they definitely earn more. So, okay, now I have told you about tens of problems, right? Now, you would naturally think, okay, yeah, right, then what do we do?
How do we build a startup in like a vertical space space? So, very self-explanatory, you hire the person who you want to sell it to cuz
there is, to be honest, no other way around. I have tried a lot of stuff. You just need to hire the user. In finance in a hedge fund, this was very easy because the user was kind of
like my boss, the trader. We worked together, but in the PharmaTech startup, it was very weird. We were like a bunch of young engineers and we were like, oh, we need a 20-year-old scientist in our
company to tell us what to do? Yeah, I guess we do. And then we hired someone, right? And that someone actually changed the trajectory of our tools. Our tools started making sense. When we pitched to
the other pharma companies, the big ones, the big pharma, they started liking our tools because it's kind of spoke their language versus the normal jargonish LLM language. So,
once you have hired the user, let's say, then what would you make that user do? You try to build a learning loop out of it. The domain expert can start at the like
a very, very low level, the ground level, where they just think about prompts. Okay, yeah, I mean, let's not ask LLM to do this. Let's ask a very
specific query again. They'll help you curate data. Just like engineers know which conferences are which are not, which research paper sites are great, which are not, which are like top
leaders in engineering, which is which are just like influencers. Similarly, a pharma expert or let's say a trader knows which sources are more reliable than the other. So, they help you create
their data. They help you like refine your prompts better, and they try to create like thinking models of how they would think about a problem. Cuz I mean, let's say if you if you follow five
steps to solve a problem, right? You just cannot do it in in any random order. There has to be a logical flow. There has to be a natural flow. That's So, that's what they
uh try to curate like decompose a problem, gradually refine, and then finally judge. So, the person who sort of has lived through the complete of the industry that they're
trying to revolutionize, their judgment is now like turning into agents. So, that's what's happening behind the loop. So, uh to do this there are like again multiple ways. I mean, each of these
could have been a hour-long session on its own. And I wish I could take, but these are like few ways that I identified. Uh I'll just like take uh you through them like really quickly in
the interest of time. So, supervised fine-tuning I think most of you would know where like model mimics human nest demonstrations. Uh reinforcement learning from human feedback is like a
kind of uh a very efficient way where human preferences train a reward model. Then rubrics as a reward is I I like to call it reinforcement learning from AI feedback.
This is because that you can human can just create a rubric, and then AI will just like grade itself based on that rubric, and that improve its own processes. But again, there is a slight
chance that you might run into an echo chamber with rubrics as rewards. And the cheapest of all, and I think the highest ROI is the error analysis. Whereas the observability part that you set up
earlier, you just analyze the logs plain and simple. You understand where model is going wrong, and then you just try to correct it. So, this is where you have like don't have
to touch any weights, and the most highest ROI way to get the impact from a like start on. And once you understand like uh what more you could do, or if error analysis is solving or not, you
can just gradually climb up the ladder, and probably uh later on go to the ultimate reinforcement learning from human feedback cuz that's I think in our industry kind of the golden standard
these days that you need to do RLHF to actually get some edge. But uh certainly there are some pitfalls of it. Like for example, now there's GLM 5.2, right?
You fine-tuned it, right? Uh Alibaba Cloud or let's say Deep Seek will release a newer model, then you have to fine-tune that too as well. So there is a cost. It's not cheap.
So once you have done all this, you just create a loop and you just like go on to that loop. You hired one user, you hire more users, they ask more queries, the scoping increases, the data increases.
At this point you're kind of generating your own data. The exercise you have been doing in loop, right? That exercise itself is generating a very I would say a crazy data set of what works and what
does not work. And this loop never stops. Once you feel confident enough in your application, you just ship it, provide it to the external paying users, and then you see the magic of it that it
actually works. So I just pulled the stat from Stanford AI Index report cuz it's a really nice report that gives you an idea of what the state of AI is. And this says like
80% 89% of enterprise AI agents never reach production. Again, I disagree. Every AI reaches production, but it just fails to work or like justify its own cost. So that's the real thing. You can
just build and ship AI agents whenever you want, but you need to justify ROI. And finance and pharma are two such industries where if it does not make money, it's shown the door.
Simple. They won't like wait and say, "Okay, maybe it'll work in 2 years. Maybe the cost will be lower in by the third year." No. It has to instantly make money. It has to like hit the
ground running. And if it does not, shown the door instantly. So just to summarize the seven steps that I feel are like good enough to give you an abstraction of how the vertical AI
industry moves. You formulate the problem statement, you source your data sources, you prompt it well, you define those prompts, you observe how your tool is performing, you
don't iterate yet, you hire the user. And this user or users now play with the tool as much as possible. They like kind of form a learning loop, an endless learning loop that goes on and at a
point when you feel yeah, it's it's really delivering that alpha over let's say Claude and ChatGPT, you just ship it, you start earning money. So,
one more interesting thing. So, HITL is like kind of a thing everyone is like yeah, let's add human in the loop. I would say not yet. Finance and pharma are still those two industries where
it's AITL, AI in the loop cuz everything is like done by the expert, but the AI assistant really helps save time. Like for example, uh it may take an X amount for a trader to
form different trade thesis, and AI can just give him five candidate trade thesis, but which one would actually work in the market and which won't is the discussion the discussion still lies
with the trader. And same for pharma when you're like picking drug candidates, which one to pick, the expert still does it, but you just like reduce the time of expert by a lot lot.
So, and and it will stay this way for really long. So, uh for the models to actually make good decisions, they don't need to do correlation, they need to do causation.
And as Ya as Jan LeCun puts it, these are like text statistics, not real-world models. You cannot just pattern match with past and use future to predict to
it. And so, we are like kind of not there yet. That's what I call as the AGI line. Once we are there, yeah, probably then models will just like make drugs. You will have vibe coded drugs. Someone
would be vibe coding market, but yeah, not yet. So, a final takeaway that I would call if if if there's one thing you are taking away
from this talk, this is it. Model infra ecosystem, everyone selling you tons of stuff at this conference is just commodity. Everyone has it. If you have it, everyone has it. Everyone can
pay X number of dollars for a subscription. But, what is moat and no one will come and sell it to you. You won't have to curate it on your own is the domain expertise. You need your
data. You need other people's data. That is just not out there on the internet. And that that's what will form your moat. So, thank you for your time. I think you enjoyed the talk and yeah, let
me know if you have any questions. We can meet outside. Thank you. >> [applause] [music]