Flint

AI-powered landing pages

April 13th, 2026

We love it when past Unicorner startup stories come full circle.

Flint CEO Michelle Lim is familiar to our team. In fact, she was employee #2 (and the first software engineer) at Warp, which we covered back in 2022!

Speaking of past Unicorner startups… we have an event to announce.

2x YC alumni. Harvard law graduate. Ex-technology advisor to the White House.

Alvin Salehi has done it all. And, of course, what we know him for best: co-founder of Shef, the delivery marketplace for home-cooked meals.

He's joining us for a candid convo in SF on Thursday, April 23.

Spots are limited. If you want to hear about all things founder insights, be sure to join us for our latest Zero to Unicorn IRL chat.

  • April 23 (SF): Zero to Unicorn fireside with Alvin Salehi, co-founder of Shef, in partnership with Auth0. Apply to join us here.

  • April 29 (SF): AI Champions dinner, in partnership with Bolt.new and MiniMax. If you’re spearheading AI usage at your company, this dinner is for you. Apply to join us here.

  • April 30 (SF): Seed+ founders dinner for 20 founders with Fidelity Private Shares. Invites are extremely limited; apply here.

Arek and Ethan 🦄

Flint allows marketing teams to generate personalized, conversion-focused landing pages faster than the traditional design-and-engineer approach. By merely defining their brand, audience, and message, companies can generate landing pages from keywords, GEO pages to improve the chance of being mentioned by LLMs, and ABM microsites that allow for higher personalization for groups of leads. Most recently, through integrating with Claude, companies can create and edit landing pages using natural conversation. Its API also enables integration with workflow automation tools like Zapier and n8n, enabling teams to trigger page generation as part of any existing pipeline. Altogether, a company can automatically spin up campaign-specific landing pages, working toward Flint’s mission of making page creation as fast and scalable as modern marketing demands.

Check it out: tryflint.com

The next $1B voice AI company is being built right now. Maybe by you.

Unicorner is teaming up with ElevenLabs to give founders a real head start: 33 million credits ($4k value) and 12 months free to go build it.

Voice agents. Multilingual content. Game characters that actually sound human.

Whatever you're building, ElevenLabs has the infrastructure to support it: ElevenAgents to build intelligent, expressive voice AI agents. ElevenCreative for speech, music, image & video in 70+ languages. 

Use code 11unicorner933 and say Unicorner sent you.

Flint utilizes a 4-tier subscription-based model. The Free model allows companies to explore and test Flint. It grants 160 credits a month, a one-time design system import, and website hosting with limited bandwidth. The Starter tier is priced at $8 per month paid annually and includes 1,000 credits per month, website hosting with 10 GB of bandwidth, and a custom domain or subdomain. The Pro tier is priced at around $34 per month paid annually, and includes 5,000 credits per month, an increased 50 GB bandwidth in website hosting, the ability to host on your root domain, and Slack support. The final tier is Enterprise, offering custom credits, API-driven page creation, multi-time design system syncing, a dedicated CSM, and more.

  • Raised $5 million seed round from Accel, with participation from Sandberg Bernthal Venture Partners and Neo

  • Officially launched its product this February

  • Increased conversion rate by 50% with Google Ads and influenced seven figures in ARR for Graphite, the AI code review platform previously covered by Unicorner

  • Built 341 personalized account-based pages in five minutes through a single CSV upload for Amigo, a healthcare company

  • Tripled paid media conversions and saved over 70 hours in manual labor for Tandem, a healthcare/prior authorization software platform, by building 14 ad-optimized landing pages in one month

michelle lim

Michelle Lim, co-founder and CEO of Flint, has spent much of her career building products and figuring out how they actually reach users. She started working as a software engineer at Slack and Robinhood, building products that have scaled to millions of users. 

These roles prepared her for her next endeavor, co-founding and serving as the CTO at Pillnotes, a doctor-patient communication app geared toward improving patient education. She built the Pillnotes app from scratch and gained early stage startup experience, marking a step towards her path to becoming a founding CEO.

From Pillnotes, Lim joined Warp, a platform for coding with AI agents, as its second employee and first software engineer. She was heavily involved in the technical side, building the app from scratch once again and developing the graphics pipeline and block sharing, which allows users to share and reuse commands.

As Warp prepared for its private beta, Lim slowly transitioned from engineering to go-to-market work. She began by leading early launch efforts, setting up feedback channels and user interviews, and eventually became Head of Product and Growth. During this transition, she noticed that “launching even a single A/B test on [its] website was a game of telephone between five teams.” 

Recognizing this gap, Lim co-founded Flint with Max Levenson, a former software engineer and tech lead at Nuro, a self-driving technology company, to build autonomous websites for marketing.

With the global digital advertising spending market size reaching $650 billion in 2025 and projected to surpass $1.48 trillion by 2034, it’s evident that companies are scouring, now more than ever, for ways to stand out and connect with consumers on a deeper level. Yet, despite the massive budgets poured into ads across Google, Meta, and more, most leads still end up on a one-size-fits-all landing page. Regardless of a customer’s need, they are met with the same general information. As a result, companies are left with an average conversion rate of just 6.6%.

Flint is targeting this niche of marketing within the emerging AI-generated web. It offers companies unique landing pages for each of their ads, keywords, and audiences, thereby providing leads with personalized advertising. In doing so, Flint claims improved conversion rates (double or triple in some cases) and, ultimately, optimizes advertising budgets. 

Multiple variations of the same landing page illustrate audience-specific content.

The reason most companies only have a few landing pages to begin with is that the process is difficult and time-consuming. It requires manual processes and coordination between marketing and engineering teams. The average timeline to build a simple landing page is 1 to 3 days. With Flint, hours can be saved. Flint can generate landing pages in minutes, and in one case, saved 70 hours of manual website work. 

With CMOs reportedly spending around 7.7% of company revenue on advertising on average, every small improvement matters. Since AI personalization can improve conversion rate, with Flint replacing generic landing pages with a tailored experience that directly ties to the expectation from the ad, companies can see significant increases in revenue. And by being one of the first to explore this niche in a world where almost all businesses have websites, it is well-equipped to scale greater. With strong potential in a massive market, we believe Flint can become a Unicorn.

ICYMI: We recently announced our official investor syndicate. Check out the announcement post for more details on how to invest in our deals.

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