Breaking
YC W23  1stCollab automates the boring 90% of influencer marketing +++ Connects thousands of creators with brands every week +++ Ex-Pinterest Head of Discovery Leon Lin in the CEO seat Brands reportedly save $1M+ / year on influencer spend +++ Notion · Character AI · Quora · Framer · Gamma +++ YC W23  1stCollab automates the boring 90% of influencer marketing +++ Connects thousands of creators with brands every week +++ Ex-Pinterest Head of Discovery Leon Lin in the CEO seat Brands reportedly save $1M+ / year on influencer spend +++ Notion · Character AI · Quora · Framer · Gamma +++
San Francisco, CAFounded 2022

1stCollab

Performance-optimized influencer marketing at scale - the plumbing, not the pitch deck.

16Employees
W23YC Batch
3Platforms
$1M+Reported savings/yr
1stCollab company logo
The mark, plain against the ledger. A four-person, ex-Pinterest team decided the least glamorous corner of marketing deserved good software - and put their name on it.
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The Story

A coordination problem wearing a creative costume

San Francisco · Creator Economy · Martech

Here is a thing about influencer marketing that everyone in it knows and nobody says out loud: the creative part - the actual video of someone holding your product - is maybe ten percent of the work.

The other ninety percent is a spreadsheet. It is finding creators, then messaging thousands of them, then negotiating a price with each one, then writing a contract, then approving a draft, then paying an invoice, then, at the end of the year, sending a 1099. It is the sort of work that scales badly, because it scales linearly: twice as many creators is twice as much haggling. Brands solve this by hiring people, or agencies, or both, and the cost of the campaign quietly becomes the cost of coordinating the campaign.

1stCollab's bet is that this ninety percent is not really creative work at all. It is operations. And operations, historically, is the sort of thing that software eats. The company - a Y Combinator Winter 2023 outfit based in San Francisco - lets a brand source thousands of relevant creators across TikTok, Instagram, and YouTube, and then does the tedious parts on the brand's behalf: outreach, negotiation, contracting, payment, and yes, the taxes. What used to take teams months, the pitch goes, now takes hours.

The founders are unusually well-suited to make this argument, because they spent years building the machine that decides what people see. CEO Leon Lin ran Discovery product at Pinterest - Home, Search, the recommendation surfaces - across roughly nine years in which he watched the company grow from about a hundred people to three thousand. Co-founders Varun Bansal and Andrew Liu came from the same recommendations-and-search world at Pinterest and Coupang. Carina Cater, who built influencer programs at Whatnot, Robinhood, and Curology, supplies the domain knowledge for the part that is not a ranking problem.

Put those two things together - people who know how to predict what will perform, and someone who knows what a good brand deal actually looks like - and you get the company's central claim: that a platform can guess, before a dollar is spent, which creator will move the needle, and then route the budget accordingly. The name for this, in the deck, is ROI optimization. The name for it, if you have ever bought a search ad, is an auction with a quality score.

"1stCollab will simplify and automate influencer marketing the same way that Facebook and Google transformed the digital ads market." - Founding thesis, 1stCollab

That is a large claim, and it is worth being honest about it. Facebook and Google transformed digital ads because they made buying measurable and automatic - you could see what worked, and you could buy more of it without talking to a salesperson. Influencer marketing, by contrast, is still mostly artisanal. Deals are struck over DMs. Performance is fuzzy. Whether 1stCollab becomes the auction layer for creators, or merely a very good operations tool for a while, is the open question the company is being paid to answer.

The evidence so far is encouraging in the way early-stage evidence usually is: real, specific, and not yet enormous. The platform says it connects thousands of creators with brands each week, that it has served hundreds of startups, and that larger brands using it have scaled to thousands of influencers while saving more than a million dollars a year in spend. Named customers include Notion, Character AI, Quora, Framer, Gamma, Locket, and SnapCalorie - a roster that skews, tellingly, toward companies that themselves think in terms of funnels and conversion.

The other side of the marketplace is the creators, and here the product wears a friendlier face. The tagline aimed at them is "better brand deals, a lot less work," which is the same value proposition as the brand side, run in reverse. Creators get matched opportunities, an auto-updating media kit, applications that take about a minute, a real person to talk to, and - the detail that gets quoted back in testimonials - payment that arrives in hours rather than after ninety days of polite email. The platform is free for them. Liquidity on the supply side is what makes the demand side work, so giving it away is not generosity; it is the business model.

What makes 1stCollab interesting is not that it has a clever feature. It is that it picked the unglamorous layer on purpose. Plenty of companies want to help you make content or measure a campaign. 1stCollab volunteered to handle the contracts and the payroll taxes, which is exactly the kind of work that is boring enough to be defensible. If you can make the tedious ninety percent disappear, the remaining ten percent - the creative - is the only thing anyone has to think about. That is a good place for a piece of software to stand.

The Product

What the platform actually does

Source · Negotiate · Contract · Pay · Measure
01

Creator Discovery

Instantly sources thousands of relevant creators across TikTok, Instagram, and YouTube, using ML that predicts likely performance.

02

Auto Outreach

Handles outreach and price negotiation with ROI predictions - no manual DM-and-haggle grind for the brand.

03

Contracts, Pay & Tax

Manages contracting, payouts (often within hours), and the tax paperwork end-to-end for both sides.

04

Review & Analytics

Content approval workflows plus real-time analytics and A/B testing to keep optimizing campaign ROI.

05

Creator Marketplace

Free for creators: matched deals, auto-updating media kits, one-minute applications, and roster tools for managers.

The People

Four founders, one recommendation-system pedigree

Ex-Pinterest · Ex-Coupang · Ex-Whatnot
LL

Leon Lin

Co-Founder & CEO

Nine years at Pinterest; former Head of Discovery product. Stanford CS.

VB

Varun Bansal

Co-Founder

Ex-Pinterest PM across homefeed recs, international growth, and creator community.

AL

Andrew Liu

Co-Founder

Former tech lead on search & recommendations at Coupang and Pinterest.

CC

Carina Cater

Co-Founder / Influencer

Built & led influencer programs at Whatnot, Robinhood, and Curology.

The Ledger

Fact sheet

1stCollab, Inc.
Founded2022
HQSan Francisco, California
StageSeed (YC W23)
Team16 employees
CategoryAI · Martech · Creator marketplace
PlatformsTikTok, Instagram, YouTube
Total raised~$630K (approx.)
The Money

Funding, to scale

Pre-Seed · 2022$500K
Y Combinator
Seed tranche · Aug 2023$130K
Seed
Total to date~$630K
Cumulative

Figures are approximate, drawn from public records.

Who's On It

Brands running campaigns, mostly on autopilot

Thousands of creators connected weekly
NotionCharacter AIQuora FramerGammaLocketSnapCalorie
"Better brand deals, a lot less work." - 1stCollab's pitch to creators
The Record

A short history

2022 → today
2022

Founded in San Francisco by Leon Lin, Varun Bansal, Andrew Liu, and Carina Cater. Raises ~$500K pre-seed.

Jan 2023

Joins Y Combinator's Winter 2023 batch; publicly launches the automated, ROI-optimized platform.

Aug 2023

Latest reported funding tranche of $130K; roughly $630K raised in total to date.

Now

Connecting thousands of creators weekly with brands like Notion and Character AI; reports $1M+/year savings for larger brands.

Watch & Learn

Demos & interviews

Product walkthroughs & founder talks
The Rolodex

Find 1stCollab

Website, socials & news
Compiled from public sources including Y Combinator, Crunchbase, Product Hunt, and 1stCollab's website. Funding and headcount figures are approximate and reflect the most recent public records available. Where a detail could not be verified, it has been left out.

Quick facts: 1stCollab

1stCollab is a San Francisco-based, AI-powered influencer marketing platform (YC W23) that automates the entire creator-campaign workflow - sourcing creators, outreach, negotiation, contracts, payments, and taxes - while optimizing for ROI. Founded in 2022 by ex-Pinterest leaders Leon Lin, Varun Bansal, and Andrew Liu (with Carina Cater leading influencer strategy), it connects thousands of creators each week with brands like Notion, Character AI, Quora, Framer, and Gamma, letting marketers do in hours what once took teams months.

Founded
2022
Headquarters
San Francisco, United States
Founders
Leon Lin (Co-Founder & CEO), Varun Bansal (Co-Founder), Andrew Liu (Co-Founder), Carina Cater (Co-Founder / Influencer Marketing)
Team size
16 employees
Products
Creator Discovery & Sourcing, Automated Outreach & Negotiation, Contracts, Payments & Taxes, Content Review & Analytics, Creator Marketplace
Notable
Accepted into Y Combinator's Winter 2023 batch, Connects thousands of creators with top brands every week, Reports helping larger brands save over $1M annually in influencer spend

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