Silicon Valley investor Sarah Guo on AI startups: what to do when "the AI giants will crush us"

Worrying that Anthropic will turn your idea into a feature is usually the wrong question — the real one is which team inside that company you're actually competing with.
By First Principles · Rippling07-21 · 11 min read⚑ Expert view · personal take
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  • The pushback founders hear most often now is that Anthropic or OpenAI will just build this themselves. Five years ago, the same line named Google and Amazon instead.
  • Sarah Guo's answer: don't ask whether the big company will build it — ask who they'd assign to build it. Every company only has one A-team, and it's parked on the core business; everything else doesn't get their attention.
  • Her read: Anthropic's core is the model itself, and its core use case is code — everything else is secondary. It deliberately skips video and image models, partly for safety reasons, partly just to stay focused.
  • AI doesn't exempt anyone from the fundamentals of business: Anthropic's $40-billion-plus revenue came from developers showing up on their own — selling there is mostly just order-taking.
  • Conviction's biggest shift in thinking lately is dropping Silicon Valley's old orthodoxy of "nail one thing first." Customers don't want a million vendors — being a single-point solution is just a temporary state.
Opening

The line founders dread most right now

Five years ago, pitching a new product meant fielding the same challenge every time: Google will just build this themselves, Amazon will turn you into a feature, you'll get steamrolled — so what's your edge?

Pitch investors today and the same challenge hits even harder. In the AI era, a single model update can bury a product in a matter of months, sometimes weeks. The names in the challenge have changed too: now it's Anthropic that's going to eat you, OpenAI that's going to turn you into a feature.

The threat, five years ago

A big company copies what you built. That takes a project charter, a roadmap slot, staffing — which bought you at least a year or two to build a moat and lock in customers.

The threat, now

A single model update can wipe you out. Nobody has to target you specifically — the moment the capability ships, your thin layer of value is gone.

That question landed on Sarah Guo.

She's the founder of Conviction, a Silicon Valley venture firm. Before that she spent nearly a decade at Greylock, then struck out on her own in 2022. The reason she's known is simple: everyone else piled into AI in 2023, but she bet the whole firm on it in 2022 — and the bet paid off. Her earliest investments included Harvey, the AI legal tool that went on to become one of the fastest-growing AI applications; Sierra and Open Evidence followed. In four years, Conviction went from nothing to a name Silicon Valley actually knows.

Host Matt MacInnis put the challenge to her directly: does that logic still hold? Would you still pass on a company because Anthropic might eventually build it? Where do you draw the line?

She didn't answer yes or no. She swapped out the question: first figure out who inside that company you're actually competing with.
◆Reframe the question and it stops being an unanswerable guess and becomes something you can actually check: where does what you're building rank on that company's priority list, and what caliber of person would they assign to it?
Full interview, 54 minutes, with bilingual Chinese-English subtitles added by this site. Host Matt MacInnis is on the left, Sarah Guo on the right. The rest of this piece follows the conversation in order — watch here if you want the original audio. Source: episode one of the Rippling podcast First Principles.
Core argument

Big companies only have one A-team

She starts by conceding one case where the fear is real: go up against search and advertising, and you're facing Google's actual A-team — and those people are genuinely good.

But most startups aren't in that situation. She says a big company's product portfolio is so wide that most of it isn't staffed with the A-team — because there's only one A-team, and it doesn't stretch that far.

If your product is Google's priority number 27, that's really not so scary. Sarah Guo

She has a name for this: organizational physics. The idea is that there's a hard physical limit to how many things a company can do well at once. Unless it was built from day one to fight on multiple fronts, it'll only excel at its core business and be mediocre everywhere else. That's not about good or bad management — there just aren't enough people to go around.

An analogy

It's like a team with only one starting lineup. Play three leagues at once and two of those games are necessarily fielding backups. If you happen to land in the game where they've sent the bench, "they're stronger than you" isn't really the whole story anymore.

A giant's product-line grid Dark cells: the core, guarded by the A-team. Light cells: everything else Core business A-team here Second pillar Gets some talent too B-teamB-teamC-team C-teamC-teamOutsourced MaintenanceNear-cut… You are here The question: where does this rank for them, and who do they send? The lower it ranks, the fewer people they commit — and the less urgency they feel
Diagram drawn by this site based on Sarah Guo's remarks in the interview; the number and division of cells are illustrative, not an actual product lineup of any real company.

Her point, then, is that founders should feel more confident going after everything outside a big company's core business. Those areas get B-team and C-team staffing — which, for a startup, is open space.

So where exactly is Anthropic's core?

Which raises the question: how do you know where a company's core actually is, and whether you're about to run into its A-team? The host pressed further: what was Anthropic built to be good at?

Her read is that the model itself is the business — the core use case is code and models that can improve themselves, pushing capability forward toward AGI — and everything else is fairly secondary. What backs that up is what it has deliberately chosen not to do.

The evidence

Anthropic doesn't build video or image models. She thinks that's partly a safety call and partly just focus. What a company deliberately gives up tells you more about where its core is than anything it claims to prioritize.

So why don't the big labs just scoop up the application layer while they're at it? Her answer: they've actually tried both horizontal and vertical applications, and it hasn't worked out — not because they can't see the money in enterprise. Every step of running a software business that actually satisfies customers is hard:

Hurdle one
Figuring out what customers actually want
That's hard in its own right — no amount of model capability answers it for you automatically.
Hurdle two
Getting distribution
Getting people to know you, try you, and eventually pay is its own craft.
Hurdle three
Keeping the product current with every new capability
Including capabilities that don't even come from your own model — the product has to keep absorbing them.
Hurdle four
Figuring out pricing
By token, by some other unit, by outcome, or bundled into a seat-based enterprise contract — customers care about every one of these choices.

None of these four hurdles has anything to do with model capability. That's also why she thinks the big labs leave room for everyone else.

So if big companies aren't as scary as they seem, where should you look for opportunity? That's actually the question Matt opened the interview with.

Finding opportunity

She finds opportunity in reverse

Matt had thrown out a hard question at the start: all the old conventional wisdom about software companies is void now, everything from the bottom layer to the top can be rethought — how do you invest in a moment like that? He said it makes him deeply uneasy.

Her approach is to flip the order. Don't pick an industry first — watch what new capability the technology just unlocked, then find a need that already existed and connect the two.

That's how the Harvey investment happened.

In the second half of 2022, what had just become possible was this: machines could generate long stretches of text, and they'd only get better, with smarter retrieval along the way. She says she still doesn't really know what lawyers do day to day, but law looks like a job that consists of reading huge volumes of text and then writing huge volumes of text — and that's probably the core of the profession.

You just work from that premise: we now have a magic box that conjures text, and paired with the right founder, where could you point it? That's not some complicated judgment call. Sarah Guo

Matt cut in, noting that she was measuring time in months. She said, right — plenty of things she didn't believe a few years ago, she believes now. You have to keep updating yourself.

After text, the next direction she zeroed in on was real-time voice, on the theory that AI could now handle a phone call convincingly. The key is not to fall in love with an industry — follow the technology instead: see what it just unlocked, then ask which old problem it can solve.

The next question follows naturally: if that's how opportunities surface, how much time do you actually have to seize one?

Fundamentals

AI doesn't waive a single rule of business

The host laid the question out plainly: distribution, margins, the health of the business model — do those old items on the startup checklist still matter, or has AI handed everyone a free pass? Her answer: nothing gets a free pass, but the state of every one of them can shift.

You have far less time to waste than before

She thinks market leadership hasn't been made obsolete by AI — it still matters just as much. What's changed is the window you have to grab it.

Five years ago, someone could spot an undervalued software workflow and say: once my equity vests, I'll come out and build it in three months — back then, that delay wasn't fatal. Not anymore. She uses code generation as the example: three months later, the way people use that capability might have changed entirely. You don't just lose three months — the product shape you were originally aiming at no longer exists.

Five years ago

A three-month delay cost you three months. When you came back, the race was still where you left it — you still recognized it.

Now

A three-month delay now, and you might come back to five companies already standing there — and the way people use the capability has already changed shape.

Her explanation: the moment a good opportunity surfaces, some eighteen-year-old somewhere pounces on it, and the money follows just as fast. So she says the point here isn't really time — it's urgency.

Anthropic's revenue came from developers showing up on their own

On distribution, Silicon Valley's long-standing consensus has been: bottom-up adoption by end users can carry you part of the way, but getting to billion-dollar revenue eventually requires a sales team and an enterprise playbook. She uses Anthropic to push back on the second half of that consensus.

Anthropic getting to $40-billion-plus in revenue was definitely driven by end-user adoption. Developers decided: I want to use the best model on the market, the best framework, the best product — so I just used it, and I ended up spending a lot of money on tokens. Sarah Guo

She added: sure, there's a sales team, but they're mostly just taking orders.

Worth separating out

Sales itself hasn't stopped working — what's stopped working is a different piece of old wisdom: "if I just build something good enough, users will come." Her counter is plain: how would anyone even know you exist, and why would they believe you're better than the alternative? In a market this noisy, getting noticed, getting tried, and getting paid for will always fall on the founder.

The host then brought up a question he asks every founder himself. Whenever someone answers that their go-to-market strategy is "we'll hire a sales team," he fires back:

Name me a less efficient go-to-market motion. Just name one — something less efficient than hiring a pile of sales development reps and account managers to sell your product. Matt MacInnis

He says founders pause for a moment, then admit they can't think of one.

So what makes a founder good at distribution? Her measure isn't which playbook they name — it's whether they've taken ownership of the problem. She points to Zach at Open Evidence: a deeply engineering-minded founder running a free product who couldn't spend unlimited money on acquisition, so he and his team kept asking how to get every doctor in the country to know about the product for as little money as possible. One thing they did was print and mail out a medical research journal — because for a free product, that's cheaper than running a sales team.

In the end, a company is just a machine

This one comes from Aaron Levie. After Box went public, the two of them were chatting over coffee when he said something that's stuck with her ever since.

Sarah, you need to tell these founders their job is to build a machine that produces cash flow. I didn't realize it before, but my job was building a cash-flow machine with a highly efficient sales motion bolted onto it. Aaron Levie's words to Sarah Guo, as she related them in the interview

The host filled in the first-principles layer underneath: a company's value is simply all its future cash flows discounted back to the present — that's it. The revenue multiples and other shorthand valuation methods we use day to day are just rough rulers pointing back to that same principle.

Once you get this machine, every other decision falls into place $1 Goes in Company A cash-flow machine with an efficient sales motion $2 Comes out Put in one dollar, get back two, and you'll keep feeding it — until the machine breaks Which answers why burn rate matters, why margins matter, and why you grab customers now, not later
Diagram drawn by this site based on what the two speakers said in the interview, meant to illustrate the principle; the numbers are just examples.

The host said that once this clicked for him, every other decision snapped into place: why you should worry about burn rate, why you should watch margins, why you grab customers now instead of in six months — because all of it eventually converts into cash flow at some future point.

Why a company has to get big

On ambition, she starts with an answer she herself calls "not exactly inspiring": a venture-backed company only has two good endings.

Ending A
Get acquired at a premium
The buyer has to be willing to pay a lot, so ideally you're already a large, high-margin business in your own right. Either you have the team and technology someone wants, or a strategically valuable customer base.
Ending B
Go public
Running a small public company isn't fun. Going public today means being bigger than it took five or ten years ago, and you need a predictable, visible growth curve to earn a good valuation.

Both paths demand scale, or you have to become a genuine threat to someone. She says founders start out thinking about some customer problem, but the ending is an entirely different optimization problem: how do you get to $500 million in annualized revenue and keep growing, or how do you become an asset someone absolutely has to buy?

$40B+
Anthropic's revenue (USD); she says the driver was end-user adoption
$500M
Annualized revenue (USD) — her benchmark for "good enough for a good ending"

Since the ending demands that kind of scale, the next question is how you choose your path from day one.

A shift in thinking

Giving up on "nail one thing first"

She says this is Conviction's biggest shift in thinking over the past few years — partner Mike Vernal has written about it specifically. Silicon Valley's traditional mindset is: pick one feature, and make it the best.

The logic sounds clean: a feature is your wedge into a product, a product is your wedge into a suite, a suite is your wedge into a platform. She disagrees, for two reasons.

The first is just looking at outcomes — you can find examples from both the SaaS era and the AI era showing that this theory has little to do with whether a company actually succeeds. The second, which she thinks is the harder point, is that customers don't think this way at all:

If you ask customers, they don't want a million vendors. Being a single-point solution is just a temporary state. Sarah Guo

Following that logic, AI lets a single company do far more, so the founders best suited to this moment are the ones taking on more scope. She's clear-eyed about the cost, too: more ambition usually means more risk — you have to assume your second bet isn't any less likely to pay off than your first.

You'll get talked out of it

Both she and the host mention that founders making this choice will always get warned off: you can't swing at two balls at once. Her view is that if you want to become the company you actually want to be, or compete at the level you care about, you have to try more than one thing.

Old markets are consolidating, new ones are opening

The host raised an inference here that's bad news for investors: if AI compresses what used to be many separate billion-dollar categories into a smaller number of much bigger companies, that's bad news for the return structure of venture capital.

She half-agreed, then reframed it. The existing software market really should consolidate — her own words were that the space shouldn't have this many SaaS companies. But there are still plenty of markets software hasn't entered yet. Her example is Sierra.

She says she invested in Brett Taylor and Clay Bavor as people, not in the "call center software" category. That category has historically sold something quite thin — essentially just the result of "the call goes through" — and barely even gets to claim it saves customers money. Sierra, though, is operating two abstraction layers higher.

Original layer
The call goes through
This is the result call center software has always sold.
One layer up
Saving the customer money
This market has always been about cutting costs.
Two layers up
Making more money on a transaction path
Helping a big bank make more money on something like a mortgage process. She says she doesn't care whether you still call this the call-center market — what matters is that it's actually a new market.

That answers the host's worry. Consolidation really is happening, but that's the math for the old market. Move two layers up and you're selling something different — the whole ledger changes.

With direction covered, one thing remains: all of this takes money, and the money sits with investors.

At the fundraising table

How to read the investor sitting across from you

The back half of the interview turns to the investor side of the table. She thinks founders invest far too little effort here: before fundraising, hardly anyone has seriously studied how the process of getting a VC to write a check actually works.

My framework is simple: treat them like an enterprise buyer. There are other stakeholders involved, you need to understand the process, and there are several steps in that pipeline. Sarah Guo

She gives a two-layer classification and suggests sorting the investor into it before you even start talking.

Layer one · The firm
What's the firm's structure
A very large firm needs to deploy a lot of capital, pay its people well, and keep evaluating follow-on rounds for its portfolio companies. That's a fundamentally different animal from a firm that's structurally early-stage. The question that lands on you: does this person just want this round, or this round plus your next six?
Layer two · The individual
Can the person across from you actually make the call
Are they a decision-maker who started their own firm with proven investment conviction, or someone climbing the ranks at a large firm who needs a lot of people to sign off? She stresses that you can work with either type, but you need to know which one you're dealing with, and how much risk they're taking on by backing you.

Social capital is a limited resource

This is the most practical concept in the episode. She doesn't want founders burning energy overanalyzing favors in the investing world, but she does want them to see who's paying the social cost in every interaction.

If I need a favor from Sundar at Google, the number of times I can ask isn't unlimited. People generally keep a running tally in their head — am I adding a burden to this person, or helping them? Sarah Guo

In practice, that looks like this. An investor introduces you to a few of his growth-stage investor friends — the motive might be that those people are LPs in his fund, and he's promised them first look at the companies he backs. That's not aimed at you specifically, but it's not really in service of you either.

She gives two questions you can ask yourself on the spot: did you ask for this introduction, or did they offer it unprompted; and is the investor they're handing you actually the best fit for you, or are they just banking points for themselves?

The other half of the homework is reading what the person actually cares about. Wanting to make partner, wanting to make a lot of money, a genuine love of technology, wanting founders to adore them, just liking being in the room — these are very different drivers. She says that if you understand the people you're doing business with, you can predict their moves much better, and that effort is worth spending.

Her own rule: assume the money could stop at any time

Last comes the current capital wave. The host describes this moment as Renaissance Florence, just with a mountain of capital pushing it along. Her view is that cheap capital gives the same amount of progress a higher valuation, which is why bubbles are actually good for building infrastructure.

That's exactly how a bubble is good for infrastructure. A batch of founders and investors will lose a lot of money, because in hindsight, it wasn't the rational thing to do. Sarah Guo

Her own discipline is to assume the music stops. Land-grab decisions — spending $200 million to train a model, or loosening a sales comp structure from 6-to-1 to 4-to-1 — only make sense once you rerun the math without assuming capital keeps flowing forever. That's the only way to know what you're actually doing.

She points to friends' examples: several software companies with revenue in the hundreds of millions of dollars were once spending on ads with a 14-year customer acquisition payback period — meaning a customer had to stick around for 14 years just to break even. In an era when the cost of capital was near zero, that was rational in a vacuum, but that assumption won't hold forever.

How Conviction built itself in four years

Finally Matt asked a question unlike anything before it: Conviction has only existed since 2022, and building a name the industry actually recognizes in four years is genuinely hard — how did she pull it off?

She starts by saying luck mattered more than skill, then lays out three concrete things she actually did.

First: pick something important, actually go understand it, and be inside the circle before the crowd shows up. She says most people decided to do AI around 2023 — if you already understood it and were already embedded in the ecosystem before that, it counts for a lot.

Second: run the firm like an actual company. She says even she thinks this sounds dumb to say out loud, but most VC firms' self-positioning boils down to "we love founders, we have money, and we pick winners."

That's not persuasive. Sarah Guo, on how most VC firms position themselves

Her breakdown: to a founder, every VC firm looks basically the same — each has good investors and bad ones, each has hit good companies before, and back then, nobody knew who Conviction even was. What actually needs solving is an information asymmetry problem: why should you believe my network is better than the next firm's? Her answer is don't just say it — go do partner marketing, put photos of yourself with the people who matter online, and belief comes a lot more naturally.

She also brings up something partner Mike Vernal says: at any given moment, there are roughly 250 people in tech doing the most interesting work, and that list is always turning over. Their approach, regardless of whether those people are founders, executives, researchers, or operators, is to find them first, understand what they're doing, and then be useful to them. She says that's closer to sales than to marketing.

Third: don't be bland. The upside of starting four years ago was having nothing to lose, so she could take bigger risks. Put opinions online and you'll definitely get some wrong, but she says she's hardly the first person to say something wrong on the internet. And her readers are engineers — get something wrong and they'll email you to point out exactly where, which beats a reply of "who even are you" by a mile.

Near the end of the interview, Matt asked how she wants founders to understand Conviction. She gave two lines that sound like principles:

We're happy to bet on a great founder even before we're fully sold on the idea. But we will never pair a market we think "should exist" with a team we don't think is right for it. Sarah Guo

Beyond that is her view of the whole picture. She says the big labs are all genuinely impressive, but if it all ends with just three companies winning and everyone else reduced to infrastructure, that won't be this economy at its best. What she wants is for innovation to spread faster — with the right money, backing the right people.

Source
Why "the labs will build it" is the wrong startup fear | Sarah Guo (Conviction)Episode one of the Rippling podcast First Principles, host Matt MacInnis in conversation with Conviction founder Sarah Guo·Original video, full length 54 minutes·2026-06-30
Note from this site
This piece is based on a full transcript of the video; quotations are translated renderings of what was actually said in the interview. The embedded video is a bilingual Chinese-English subtitled version prepared by this site; copyright belongs to the original publisher, Rippling — the original video link is above. The two diagrams were drawn by this site to illustrate points made in the interview; the cells and numbers in them are illustrative. Harvey, Sierra, and Open Evidence, mentioned in this piece, are all Conviction portfolio companies — Sarah Guo disclosed this relationship in the interview itself.
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