How Wispr Flow Built a Paid-UGC Engine: Hector Serrano's Playbook for SaaS Growth

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Overview

Hector Serrano joined Wispr Flow at 19, before the product had found product-market fit, and now runs its paid user-generated content (UGC) program and the founder's organic channels as head of content. In this conversation with Lenny Rachitsky, the central question is what is actually working in growing a B2B SaaS product right now. Rachitsky cites reported figures that Wispr Flow's revenue grew 30x in the past year and that the company recently raised at around a $2 billion valuation. Serrano's answers cover three areas. The first is a performance-based paid-UGC model borrowed from e-commerce. The second is a view of hiring that favors young, unconventional marketers over polished résumés. The third is a strong preference for human-made creative over AI output.

29 min read

Serrano starts by crediting the rest of the team and describing his own role as a small part of the business. He handles content. On the paid side that means creative, not media buying. He also manages the organic channels of founder Tanay Kothari, such as YouTube and Instagram.

3:29

Product first, then fuel

Asked what has driven growth, Serrano says the most important factor, "maybe a bit corny," is the product itself. Wispr Flow has been product-led from the start. Serrano recalls the company having a few thousand users early on. About six months in, it started catching on, and Kothari remarked that they had found product-market fit. Every channel added after that, organic or paid, was "more fuel to the fire."

Founders sometimes visit the office or reach out asking for "the hack." Serrano's answer is that there isn't one. If a product isn't growing organically and has to be forced, the team may need to go back to the drawing board. They should ask whether it is really valuable and how it is positioned. Rachitsky suggests that finding creators who are genuinely excited about a product is almost a test of product-market fit in itself. Serrano agrees and adds that low creator churn is part of the signal. Talking about something you don't believe in gets boring quickly.

5:25

Why turn on paid ads early

Serrano argues that paid is one of the best channels to invest in early. He credits this lesson to Matt Swulinski, Wispr Flow's former head of growth, who is now at Viktor. Matt brought an e-commerce approach to SaaS. Many SaaS companies are afraid to turn on the paid engine. Serrano says that doing so teaches you quickly whether your messaging resonates and whether you can convert cold traffic into users.

His reasoning is that most companies aren't skilled at organic content. Unless you have young people on the team who understand packaging and production for these channels, organic gives you few clear numbers on whether the product has legs. Paid, tested within your budget, gives a clear signal. If you can turn cold traffic into paying users, Serrano says, the same messaging should also work organically with more optimization.

Some teams fear that spending heavily will saturate their market or ideal customer profile (ICP). Serrano's response is that saturation mostly comes from a lack of creativity. There are always new messaging angles and new ICPs to target if you are "savvy enough with the angles."

8:40

The organic UGC experiment that came first

Serrano traces the current program back to an earlier experiment. In early 2025, Wispr Flow had a marketing intern named Tobin Tang. Tobin had studied finance, wanted to be a lawyer, and had only basic UGC experience. Kothari gave him a budget and told him to throw things at the wall. Several projects failed. Then Tobin found success with organic UGC.

Serrano explains the model this way. A brand recruits a group of creators who make videos about the product. The creators post those videos on their own alternate TikTok or Instagram accounts, for example an account named something like "Lenny Whispers." They get paid on a CPM basis, perhaps around $2 per thousand views, with the rate tapering at higher view counts. According to Serrano, Tobin's program reached roughly 500 million views in about two and a half months at very low CPMs.

It "worked decently well," but Serrano says this was a period when everyone chased vanity metrics. The views didn't translate into many conversions. The product was also hard to sell to the students who made up much of that audience. Finding someone to replace Tobin after he left would also have been hard. So Wispr Flow killed the program. Serrano stresses that he isn't against organic UGC. He says Tobin later "cracked the code" at Polymarket by going beyond purely top-of-funnel concepts. It just wasn't delivering what Wispr Flow wanted.

10:52

Applying the playbook to paid, via Trybe

About seven months before the interview, Serrano noticed that paid was working well. He was still making all the paid assets himself. He wondered what would happen if they took Tobin's playbook, a community and roster of creators paid on performance, and applied it to paid ads. The ads would pitch the product more directly than text-on-screen organic content did.

Around then he came across Trybe. Serrano says it was started by Lukas Pakter, who had earlier grown the clothing brand SquidHaus quickly through TikTok Shop. TikTok Shop lets brands pay creators on performance, but nothing equivalent existed for Meta ads. Pakter built an internal tool to run creators' ads on Meta and pay them based on results, then opened it to everyone. Wispr Flow was one of the first companies on it. Serrano called it a no-brainer: "the TikTok Shop method, but for Meta ads." Because SaaS companies can't use TikTok Shop, he sees it as opening a new performance-based channel for them. Wispr Flow now launches 500 to 600 ads a month from the program.

The mechanics differ from organic UGC in one key way. Creators make a video about Wispr Flow, and Wispr Flow runs it as an ad on Meta and other platforms. The creator is paid a share of how that ad performs, not by views on their own account.

14:05

Paying creators: percent of spend, percent of GMV, and the smart retainer

Serrano distinguishes two payment bases. For a SaaS product, especially a freemium one where attribution is murky or can take a week or two, Wispr Flow pays creators a percentage of ad spend on their ads. That protects creators from a situation where their ads drive conversions that never get attributed to them. For e-commerce products like a water bottle or a T-shirt, where it is easy to tell whether a purchase came from a specific ad, a percentage of GMV makes more sense.

Pure commission is demoralizing early on. A new creator might make 30 videos and earn only $100. Serrano also observes that the best creators are often the ones who stuck around longest and learned how the model works. So Wispr Flow adds what it calls a "smart retainer." In his example, a creator commits to 25 videos with a $1,500 floor. If the creator hits the quota but earns only $500 in commission, Wispr Flow tops them up by $1,000. If they earn $3,000 in commission, they keep the commission and get no retainer. This keeps new creators committed through their first few months. Serrano says creators often "break out" after three or four months and earn purely on commission. From the brand's side, that is ideal because payment then flows only to the best-performing videos.

Earnings are uncapped. Serrano says some creators now make about $13,000 a month, more than many full-time influencers, even though they may have only 1,000 to 2,000 followers. Wispr Flow pays out every seven days. Serrano calls this a hack for motivation: the faster creators get money and the "dopamine rush," the better.

15:39

No briefs: creative freedom and compounding knowledge

As a creator himself, Serrano believes the standard approach to UGC kills its value. He admits Wispr Flow sometimes did this too. Brands send creators long briefs telling them which hooks to use, what not to say, and how to film the product. A 10-page guideline removes the creative part of the job, and he says nothing is more demotivating. A creator who is trusted and given room to make content "how I see best fit" will produce better work.

Working with the same creators month after month also compounds. Serrano says some of his creators understand the product almost better than he does and come up with ideas he never would have. When Wispr Flow launches something new, like its note-taker, he can drop it in the Discord and ask for videos. He doesn't have to recruit and brief a fresh set of creators who will be gone the next month.

Rachitsky asks whether the person leading this work should have made ads themselves first. Serrano says yes. He personally made every Wispr Flow ad for about a year and a half, "hundreds and hundreds" of them. He compares non-content people briefing creators to a non-engineer telling engineers how to solve a problem.

31:10

Step by step: building the group from zero

Serrano walks through the full process.

Set up the structure. Choose percent of spend (SaaS) or percent of GMV (e-commerce), and set up the group on a platform. He prefers Trybe.

Recruit off-platform at first. A new brand on Trybe has no payout history and no creators. Serrano notes that Wispr Flow's Trybe profile shows roughly $300,000 paid out across only 50 creators, which drives a lot of inbound. A brand showing $0 and zero creators will struggle to attract good people. So he went to Instagram and searched keywords tied to his niche, such as "UGC creators," tech, 9-to-5, lawyer, doctor, or whatever fits. He went down rabbit holes and checked the following and follower lists of creators he liked, because good creators tend to know other good creators. Over about a week he sent 150 to 250 targeted, manual DMs. He warns against mass-messaging software. Moving fast with automation, he says, brings back "slop" and bad creators. From those DMs he expects five or six really good creators. He says he hasn't needed to do outreach since.

Pick creators to fill specific gaps. Serrano adds that the goal isn't just "start with five." It is to look at your ad library and product and ask which audiences and messages are missing. A hundred similar creators won't scale because everything will look the same. Five creators who each speak to a different audience produce net-new concepts. Wispr Flow's roster now includes moms, lawyers, engineers, sales reps, agency owners, and one creator Serrano describes as an eight-figure e-commerce founder in his mid-40s with kids, who makes ads simply because he loves the product.

Build culture. Activities include weekly meetings, creator coaches who keep people engaged, giveaways, and a planned retreat in San Francisco where Wispr Flow is flying in top creators from around the world.

Grow slowly. Wispr Flow went from five to 10, then 15, then 20 creators, adding five or six every few weeks. As payouts accumulated, applications started coming in through Trybe. Serrano says he now gets about 1,000 to 1,500 applications a week and accepts only one to three. The group is capped at 50. Creators also get $100 for each referred creator Serrano accepts. When his LinkedIn post went viral, people called the referral program an MLM-style scam. He rejects that comparison. Nobody is paid simply for bringing in bodies, the group is capped, and the bonus is a thank-you for helping the program grow.

Coach against copying. Creators can see which ads are getting the most spend. That transparency backfires if they start cloning the top performers. Serrano explains that Meta's Andromeda system groups highly similar ads together. He says it scans an ad repeatedly, pulling the transcript, individual frames, and on-screen text. Similar shirts, settings, or words lead to fast fatigue. So he keeps reminding creators that the top earners got there by experimenting and leaning into their own interests. Copying them just ranks your ads beneath theirs.

His favorite example of what freedom produces came from a creator who put a keyboard outside a window on a roof in the rain. The text read "What is my keyboard trying to say?" The camera panned to a laptop where the "raindrops" typed random words, ending with "Download Wispr Flow." It became one of their best-performing ads. "I don't even know how we came up with that," Serrano says. He claims no two ads in their library look the same.

43:10

Outreach and onboarding as relationship-building

Serrano's best source of early creators was people already following the brand or already sitting in its DM requests. They likely like the product, so a simple message works: he saw their content, enjoyed it, and would love to have them in the creator group. He deliberately doesn't lead with the performance-based pitch. Creators are still skeptical of the new model, and even more were six or seven months ago. If they respond, he sends a simple PDF explaining the structure, pay, and what top creators earn, then gets on a call. He sends DMs from either the brand account or his own. He notes that hiring someone with an audience doubles as a recruiting channel. He has filled many roles by posting on his Instagram stories.

The onboarding call is built to counter what he sees as creators' usual experience: purely transactional work where they make a video, get paid, and never hear from anyone again. Most creators work remotely and crave community. He first asks how they got into content and why they enjoy it. Then he walks through a slideshow. He introduces himself and his creator background so they respect him. He introduces media buyer Eric Zaworski, explains the product, and explains how Trybe works from submission to approval to running as an ad. He mentions the seven-day payouts and shows example ads. He gets them onboarded during the call itself, comparing this to closing a sales deal. You don't want to get someone excited and then have to chase them.

Serrano believes the companies that win long-term will be the ones with the best creator relationships. Brands that pay late, don't pay, or block creators get a reputation quickly and lose access to the best people and terms. He says Wispr Flow tries to treat agencies and other external partners with the same respect.

Team structure

To start a program like this, Serrano says you mainly need two people. One is a creative lead like him, who handles communication with creators, generates concepts, and approves videos. The other is a media buyer who structures the ad account and optimizes spend across Meta, LinkedIn, YouTube and elsewhere. He calls it rare to find someone who does both. He describes himself as "not a numbers guy" and is glad he doesn't have to stare at Ads Manager.

Early on, the marketing team was CMO Daniel McCallum, Matt as head of growth, and Serrano as the sole creator, plus some external agencies. Over time they added design, an in-house director for films and launch videos, PR, a creative partnerships lead for influencers, and a celebrity talent manager. Serrano says the company has passed about 120 full-time employees, up from roughly four when he joined. Marketing is around 15 people. The team is flat with no middle management. Serrano jokes that he feels sorry for Daniel's calendar given all the direct reports.

51:34

Why volume matters, and why UGC is only one leg

Serrano frames the UGC group as an extension of himself. He was effectively an in-house UGC creator, burning out after more than a year as a "one-man show" while ad spend kept rising. Higher budgets also burn through creative faster. He says that in 2024 an ad could run for 12 months. Now, with Andromeda and Wispr Flow's spend levels, an ad is typically "dead" after about $100,000 in spend, which can happen in two to four weeks. By his estimate, the account has around 5,000 lifetime ads and 800 to 900 live at once. UGC is only part of the mix. The library also includes statics, celebrity and influencer videos, in-house ads, launch videos repackaged as ads, and founder-led content.

He also says ads are "almost weirder than organic." He can roughly predict organic performance, but ads he thinks are strange sometimes become top performers. That is why he keeps the acceptance bar low and tests widely. Some of the best ads he made a year ago are long, ugly vertical screen recordings of someone using the product with text on top.

53:56

Does it work for technical and enterprise products?

Serrano believes the model works for any company if you find users who can speak to the users you want to acquire. A common mistake is treating UGC as "college kids making content." For a dev tool, the user is probably an older technical person, and an 18-year-old won't be convincing. For technical audiences, he says, "the more boring and the uglier the ads are, the better they will perform." A plain screen recording, even 30 seconds to a minute long, can work. The same applies to an expensive sleep product. People won't buy a $3,000 item from a teenager. They want someone with the same work and problems. He concedes it gets harder the more upstream, expensive, or niche the product is.

On enterprise, he argues that companies are made up of individuals. Content can reach one person who downloads the app and tells a coworker. Usage spreads inside the company, and eventually there is an enterprise deal to pursue. Rachitsky reads this as best suited to bottom-up, product-led products like Wispr Flow or Notion rather than Workday or Salesforce. Serrano doesn't push back.

Serrano also argues that creators with no following can be better investments than influencers. Big names are often seen as sellouts "getting a bag." An unknown person speaking naturally through a partnership ad feels more genuine.

20:19

Hiring the modern marketer: résumés lie

Rachitsky mentions a tweet calling a person like Serrano the hardest role to hire for right now. Serrano compares himself with Tobin. Serrano had a 2.5 GPA, didn't attend a top school, and played Division 1 sports. Tobin had a 4.0 and went to Waterloo. Both turned out to be strong marketers, which their résumés wouldn't have predicted. His advice to anyone looking for "someone like me" is not to try, because there is no defined path. Find a kid with "some crazy background, and the crazier the better," who also has proof of work.

His criteria are simple. Is the person hardworking? Are they a good human who fits the culture? Have they grown an account to roughly 10,000 to 15,000 followers? He says a following shows they understand consistency, trends, filming, and editing. He treats Instagram as a stronger signal than TikTok, which he calls easier to grow with "brain rot" content. He also rates YouTube highly and later says he underrated it at first. As evidence that platform skills transfer, he notes he barely posted on X until two weeks before the interview. He went from about 500 to roughly 18,000 followers by treating it as a volume game: short posts, a personal style, and real value. He thinks moving from text to video is harder than the reverse. He pushed Eric to start filming, and Eric struggled for the first month.

He also stresses patience. Serrano says he was "all over the place" for his first seven months, and there were hard conversations with Daniel. The team still gave him room to fail as long as he kept learning, just as it gave Tobin money and time until something stuck after about two months.

On mistakes companies make, Serrano warns against job listings with $200,000 to $250,000 base salaries and long requirements. He says those attract the wrong people. He and Tobin were interns earning nowhere near that, hungry to learn. He recalls that on his second call with Kothari, as a 19-year-old who had never worked at a startup, he asked for equity. He says Kothari laughed and said, "I like you, man." Serrano reads that as the naive, hungry signal companies should look for. Rachitsky quotes two of Serrano's tweets. One says that companies looking for the marketer with the best résumé will end up hiring a bot. The other says the most successful people Serrano has met are "delusionally confident," outwork everyone, and love what they do.

25:16

The case for young talent and a sports-style pipeline

Serrano points to Jimmy Farley, whom he calls one of the TikTok Shop "OG" figures. Farley built an agency from around age 17, which Serrano says was acquired by Physician's Choice. Older e-commerce founders around Farley talk about the "alpha" of having someone like him nearby. A 30- or 40-year-old founder can't understand what an 18-year-old in Discord chats and scrolling Instagram all day knows about what's working. Even if founders dive into TikTok Shop or Trybe themselves, Serrano thinks they'll struggle to connect with creators and would do better delegating. He adds that Kothari still regularly asks him what's working on Instagram. Serrano takes from this that you never get too smart to keep learning, even from a 19-year-old.

His own path illustrates the point. He quit Division 1 soccer and, three days later, having just turned 19, applied to about 200 creator jobs on LinkedIn and landed at Wispr Flow. In one of his first weeks, during launch prep, Kothari messaged him in calculus class. Serrano slipped out to the bathroom to join a Slack huddle. The launch video wasn't working, and Kothari wanted it re-edited with "Gen Z vibes" in CapCut or similar tools. Serrano spent his first year picking up random tasks with no clear role and says it took about a year to feel comfortable. His immigrant parents wanted a traditional finance career. The next summer he took a finance internship in New York while also juggling two summer classes and Wispr Flow. He hated the internship within two weeks and started sneaking out to cafés in SoHo to work on Wispr Flow and his own content. Things began to "click" from there.

He draws on his soccer background, including time in a La Liga academy in Spain, MLS Next, and Division 1, to argue that startups should recruit like sports clubs. Clubs scout young talent, develop them over years, and promote them. He says many companies have dropped internship programs, which he considers among the most valuable and least expensive things a company can do. He cites Lamine Yamal's success as a teenager as evidence that betting on young talent pays off. He closes the interview urging founders to give young people a chance. In his view they can become A players, and they bring unusual loyalty whether they stay or move on.

1:03:59

"The best marketers are allergic to AI"

Rachitsky notes that AI barely came up and asks about Serrano's tweet saying the best marketers are allergic to AI. Serrano's argument is that even top AI labs use large teams of humans to produce their final assets, such as videos, Figma designs, editing, and post-production, though much of their research and internal work may be automated. For an AI company like Wispr Flow, whose pitch is helping people work better and sound more like themselves rather than replacing them, AI-generated "slop" ads, AI influencers, and AI statics would land badly given how many people are wary of AI. He cites cases where companies' AI-made animations or assets backfired because of typos or jumbled writing. He says the risk isn't worth the reward.

He clarifies the scope: the concern is the final creative output people see, which he doesn't think AI should touch "yet." Even Matt, whom he calls the most AI-bullish person he knows and someone with "the most automations I've ever seen," keeps a human on the most important final 10%. With so much automated volume everywhere, Serrano argues that focusing on quality over quantity makes it "so easy to cut through the noise."

1:07:22

Founder-led content and the long game

His example is Kothari's YouTube channel. Serrano says it launched about three months earlier, and five videos in it had millions of views and about 20,000 to 21,000 subscribers. Many teams assume they must post three times a week. He says the opposite worked: fewer videos, each telling a good story, with purpose, strong packaging, and humans touching every part.

His argument for founder-led content is that "people buy from people." He uses George Heaton, founder of the clothing brand Represent, as a personal example. Because Serrano knows Heaton's routine, values, and work ethic, he would buy from Represent over a brand he only sees in an ad. Founder content creates superfans among existing users and slowly brings in new people who buy into the mission before trying the product. He calls it a long-horizon investment. You can't start selling right away or people switch off. Instead, you over-share, over-deliver, and perhaps make a soft sell a year in, such as a discount code to thank viewers for reaching 100,000 subscribers.

On storytelling, Serrano says every company has a mission. Wispr Flow's is reaching one billion daily active users. All content should tie back to it, like episodes of a Netflix series with one overarching theme. He describes it as a public version of the product roadmap, showing the ups, downs, and struggles. Episodes have ranged from the note-taker launch, to Kothari wedding shopping in India while working remotely, to a "week in the life" video and a whiteboard breakdown with Serrano. Rachitsky suggests this is easier for a company people already care about. Serrano concedes that may have helped but believes founders with smaller brands can succeed too.

He also argues organic and paid reinforce each other. Citing the common idea that people need around seven touchpoints before buying, he says someone who has watched long-form YouTube, seen the founder's reels, and read LinkedIn posts is more likely to convert on the first ad they see. Rachitsky notes that paid then gets credit for the conversion, and Serrano agrees.

1:14:21

The founder-content team, and why YouTube packaging matters most

Rachitsky summarizes the team from one of Serrano's videos. There is a head of content (Serrano), a videographer, a YouTube team that packages long-form videos, and short-form editors who cut clips. Serrano hired almost everyone through his Instagram stories. That includes the 24-year-old videographer, Alex. After a story post drew around 80 replies, Wispr Flow flew Alex out to San Francisco from Australia, where he was vacationing, on three days' notice. The YouTube agency also came through Instagram.

Asked which role matters most, Serrano picks the YouTube packaging team, over even the production quality of the footage. You could make a "Hollywood production," he says, but a bad thumbnail and title mean nobody clicks. Packaging covers click-through rate and title, but also average view duration, storytelling, pacing, the intro, and making sure the video pays off the thumbnail so viewers don't drop off. A strong long-form team also makes short-form better. Wispr Flow's short-form editors, based in Germany, Romania and Australia, often juggle many clients and optimize for output rather than story. If Serrano sends them 40 hours of raw footage, he may not get the best clips back. If he sends them a well-cut long-form video without titles or music, they can pull the strongest moments.

He also sees YouTube as having the longest half-life of any platform. One video on his personal channel has been up about five years. He says it was around 40,000 views a year ago and is now around 600,000. Some of Kothari's three-month-old videos still pull about 10,000 views every 48 hours. Instagram posts, by contrast, are typically dead within two days. He predicts some of Kothari's videos could reach five or six million views in a few years. Rachitsky shares a similar experience. His episode with Netflix CPTO Elizabeth Stone has slowly climbed to nearly the top of his channel.

Lightning round

Serrano recommends The Almanack of Naval Ravikant. It didn't click the first time he read it, but the idea of media as "permissionless leverage" later matched what he saw as his own content compounded. He has bought it for his younger brother. He also says he is curious about Ego Is the Enemy but hasn't read it yet. He recently watched the Elizabeth Holmes movie with his girlfriend and enjoyed it. His favorite AI product is Miso, a travel agent, with no affiliation. He says he has taken around 55 to 60 flights and about 89,000 miles this year. When he once slept through his alarm and missed a flight from Puerto Rico to San Francisco, he texted Miso and was rebooked within about two hours at no extra cost. He notes that Miso has humans on the back end with airline connections for escalation.

His life motto comes from Steve Jobs: you can't connect the dots looking forward, only looking backward. Serrano says he was never the smartest kid in school, had severe ADHD, and felt lost for months after losing soccer, even while at Wispr Flow. He didn't understand at the time why he had picked up a camera at 16 or started posting on YouTube. Looking back, he says, it all makes sense. His closing advice is to keep going, and he invites listeners to follow along on X, Instagram, and YouTube.