yc-w24
(38)
Dori Wilson and the trouble with a beautiful chart
She co-founded Thorntale to help people tell stories with data. Her work since then keeps returning to a harder question: what makes a number worth trusting?
Okiemute Avworhokai’s second education
Before co-founding Miden, Okiemute Dominic Avworhokai had spent years in banking and built a student-credit business. Y Combinator gave him another education - and a sharper view of what African businesses need from their money.
Jasper Story Is Teaching AI to Sweat the Cut
A former maths teacher, Google contractor and startup generalist is turning the fussy craft of product video into a system teams can direct with words. His bet is that automation matters most when it leaves the story feeling human.
Shawn Shivdat
Shawn Shivdat is the co-founder and CEO of Penciled (YC W24), a San Francisco startup that builds an AI front office assistant for physical therapy clinics. Raised around a mother's private practice and trained in computational neuroscience at Harvard, he went from writing patient-outcome software at Massachusetts General Hospital to launching a company that fills canceled appointments and completes plans of care automatically. Penciled now serves 200+ providers across 50+ clinics and has raised over $2.6M.
Tolu Alabi
Tolu Alabi is the co-founder and CEO of Cleva (YC W24), a USD banking platform that lets freelancers and businesses across Africa get paid in dollars and shield their earnings from local currency swings. Born and raised in Nigeria, she played competitive basketball before earning degrees at Grinnell College and Stanford GSB and building products at Stripe and Amazon. She also runs Next in Line Africa, a basketball nonprofit that teaches life skills to young athletes.
Stacie Arechavala
Stacie Arechavala is a biomedical engineer and the cofounder and CEO of Selera Medical (YC W24), a San Francisco medical device startup she started in 2023 with Kevin Bui after the two met as fellows at Stanford Biodesign. She trained at the University of Miami and Duke, developed cardiovascular devices at Medtronic, and built low-cost devices for underserved communities before turning her attention to heart failure care. Her guiding line: innovation can change the world, but design is what makes it happen.
Sourav Choraria
Sourav Choraria is the co-founder and CEO of Infinity (YC W24), a Bengaluru business banking platform that helps cross-border SMBs and startups send and receive international payments with multi-currency accounts, flat fees, and no FX markup. He built it with his brother Sidharth after watching their family business lose money to slow, opaque international transfers. Before Infinity he was head of growth at Paytm Money, where he helped scale the wealth platform to 20 million monthly users and launched India's first fixed-deposit-backed credit card.
Ambria (YC W24)
Ambria is a San Francisco startup building AI agents for the industrial world - production-ready agents that automate back-office operations across manufacturing and distribution. Founded by UIUC classmates Praneeth Guduguntla and Arman Rafati, the company went through Y Combinator's Winter 2024 batch, where it first launched as Glimmer, an AI search engine for massive PDFs, before turning its document-reasoning expertise toward the paperwork-heavy back offices of industrial companies.
Clarum
Clarum is a San Francisco AI startup (YC W24) building the intelligence layer for private capital. It began as an AI associate that compresses private-equity due diligence from weeks into minutes, letting firms upload data rooms and questionnaires and get transparent, sourced answers to hundreds of questions. It has since broadened toward structuring a firm's proprietary documents - deal memos, diligence notes, returns data - into a unified model that AI agents can query, so investors can finally ask cross-portfolio questions that were previously buried in files.
Infinity
Infinity is a Bengaluru-based cross-border payments platform that lets Indian freelancers, exporters, and small businesses receive money from global clients through multi-currency virtual accounts. It converts foreign payments to INR at live FX rates with a flat 0.5% all-inclusive fee, settles funds in about a day, and handles RBI compliance paperwork like FIRA automatically. Founded in 2024 by brothers Sourav and Sidharth Choraria, the company is part of Y Combinator's Winter 2024 batch.
Integuru
Integuru is a San Francisco startup (YC W24) building an AI agent that reverse-engineers the internal APIs behind websites and apps that have no official API, then generates fast, production-ready integration code. Instead of brittle browser automation, Integuru analyzes network requests and cookies to produce direct API calls that complete in about three seconds with 99.9%+ success. The open-source agent has over 4,700 GitHub stars, and the hosted managed service powers more than a million API calls a month per platform across healthcare, logistics, proptech, and legal.
ion design
ion design is a San Francisco AI company (YC W24) building tools that let non-engineers ship real UI changes to a live codebase. It started by turning Figma designs into clean React code, grew into a Figma-like visual editor that opens branches and pull requests against your GitHub, and now runs autonomous AI product-design agents that create and test on-brand pages to grow revenue. Founded in 2023 by Samraaj Bath, it targets the gap between people who can ship code and the PMs, designers, and marketers who cannot.
jo
jo is a voice-first personal AI agent for macOS that runs on your Mac and a private, per-user cloud machine. Rather than waiting to be asked, it proactively summarizes what is on your screen, drafts emails, manages your calendar, clips relevant content, and keeps up with the loose ends of work and life. Built natively in Swift for Apple Silicon and backed by Y Combinator (W24), jo reaches users across Mac, web, iMessage, Telegram, and WhatsApp while keeping personal data local and out of model training.
Miden
Miden is a Nigerian fintech building payments infrastructure for businesses across Sub-Saharan Africa. Through a single API, companies can issue virtual and physical cards in USD, NGN and multi-currency formats, run banking-as-a-service programs, open business accounts, and handle bill payments - the plumbing that lets other companies launch financial products without building banking rails from scratch. Founded in 2022 and part of Y Combinator's Winter 2024 batch, Miden has issued over a million cards and processes billions in transaction volume.
OneGrep
OneGrep (YC W24) is a New York-based developer-tools startup building AI agent infrastructure for DevOps. It began as a DevOps copilot that fine-tuned models on real-time telemetry to help engineers resolve incidents faster and cut observability costs, and has since expanded into tooling that lets AI agents discover, correlate, and safely operate the many SaaS and MCP-based tools engineering teams rely on. Founded by ex-Disney, Amazon, and Coinbase engineers Achintya Ashok and Brian Cripe, it went through Y Combinator's Winter 2024 batch.
Penciled
Penciled is an AI front office assistant for physical therapy clinics. It plugs into the clinic's existing EHR - primarily WebPT - to text and call patients, book and confirm appointments, complete plans of care, send reminders, and fill last-minute cancellations from an automated waitlist. Founded by Shawn Shivdat and Deniz Sert in the Y Combinator W24 batch, the company now serves 200+ providers across 50+ clinics and books thousands of appointments a month.
Reprompt
Reprompt builds AI agents for location data. Mapping companies like Foursquare, TomTom, and Radar use its agents to keep points-of-interest and business records current - verifying hours, status, ownership, and dozens of other attributes by cross-referencing web, social, government, and news sources. Founded in 2024 by ex-Mapbox and ex-Robinhood operators, the company turns work that once took weeks of manual research into runs that finish in under an hour.
Selera Medical
Selera Medical is a Y Combinator-backed (W24) medical device startup building MILO - minimally invasive lymphatic offloading - a one-time, catheter-based procedure that treats fluid overload in chronic heart failure. Instead of a lifelong drug regimen, Selera taps the body's lymphatic system to drain trapped fluid from the interstitial space, aiming to break the cycle of repeat hospitalizations that defines late-stage heart failure. Founded in 2023 by CEO Stacie Arechavala and CTO Kevin Bui, both former Stanford Biodesign fellows.
The New Money Company
The New Money Company (YC W24) is a San Francisco fintech that protects B2B invoices against nonpayment and moves the money across borders. Its product, Numo, underwrites a buyer's creditworthiness instantly, guarantees the seller gets paid even if the buyer defaults, and settles funds to more than 80 destinations - with an early focus on getting international contractors in emerging markets paid in USD within seconds. Founded in 2023 by three former Hologram operators, it aims to let businesses sell into new markets without carrying the risk of a buyer who never pays.
thorntale
thorntale (YC W24) is a San Francisco software company that built presentation tools for data storytelling. Instead of screenshotting charts from Looker or Snowflake into Google Slides, teams could connect live data sources directly into decks, so charts stayed interactive and up to date - even re-segmentable during a live Q&A. Founded in 2024 by data scientist Dori Wilson with engineers Ellen Hui and John Stimac, the company later pivoted toward an AI-powered presentation editor and shipped a free AI Presentation Review tool before winding the core Presentations product down at the end of 2025.
Yarn (YC W24)
Yarn is an AI-native platform that lets go-to-market teams make agency-quality product, sales, and marketing videos in minutes instead of weeks. Founded during Y Combinator's Winter 2024 batch by Jasper Story and Nicole Atack, Yarn treats video like a document: you write a script, and its stack of AI tools handles voiceovers, screen recordings, part-synthetic talking heads, brand-styled overlays, and generative footage. The pitch is speed and cost - videos that would take an agency weeks and thousands of dollars, produced in-house in under 20 minutes.
Dave Feldman
Dave Feldman is the co-founder and CEO of Greenboard, a New York-based company building an AI-native operating system for financial compliance. A Johns Hopkins-trained engineer who previously led product work at Guideline and a Hive AI joint venture with Bain & Company, Feldman started Greenboard in 2023 with college friend Ed Schembor after seeing how badly financial firms struggled with fragmented, dated compliance tools. Greenboard went through Y Combinator's Winter 2024 batch and has raised $20 million total, including a $15.5M Series A led by Base10 Partners, with more than 500 financial institutions running their compliance programs on the platform.
CrowdVolt
CrowdVolt is a New York-based, Y Combinator-backed marketplace that lets fans buy and sell tickets to live events - starting with raves and EDM concerts - through a bid-ask model similar to StockX. Buyers name the price they are willing to pay, sellers set an ask, and trades clear automatically when the two meet. The platform handles secure payments and automated ticket transfers to cut fraud, inflated fees, and the opacity of the traditional resale market.
LemonSlice
LemonSlice is a San Francisco AI research and product lab that turns a single photo into a real-time, talking video avatar - the visual face for voice agents and chatbots. Its Lemon Slice-2 model is a purpose-built, large-scale video diffusion transformer that generates every pixel from scratch to produce expressive, full-emotion talking characters (human or cartoon) that livestream at conversational speed. Founded in 2024 by three PhD-creators (formerly Infinity AI), the company raised a $10.5M seed led by Matrix Partners and Y Combinator to make all video interactive.
Lina Colucci
Lina Colucci is the co-founder and CEO of LemonSlice, a frontier AI lab building the world's first real-time interactive talking video models - tech that turns a single photo into a face you can hold a live conversation with. A former professional ballerina with a Harvard-MIT PhD in medical engineering, she has founded three companies, holds patents in biosensing, and raised $10.5M from Matrix Partners, Y Combinator, Dropbox's Arash Ferdowsi, Twitch's Emmett Shear, and The Chainsmokers. She bets that all video is heading toward being interactive and personalized to whoever is watching.
Abdul Jamjoom
Abdul Jamjoom is the co-founder and CEO of Arini, a San Francisco startup building an AI receptionist that answers phones, books appointments, and handles patient communication for dental practices around the clock. A Harvard computer science graduate and former search and applied-AI engineer at the enterprise messaging company Threads, he teamed up with his high-school friend Rami Rustom - the pair met in Jordan - to attack a market they found by literally walking into dental offices and watching front desks melt down. Backed by Y Combinator (W24), Arini turns the $7B-a-year dental front-desk problem into software that, in Jamjoom's words, just gets the job done.
August Chen
August Chen is the co-founder and CEO of Hazel, a Y Combinator-backed startup building AI-native procurement software for U.S. federal, state, and local government. A Harvard mechanical engineering and computer science graduate who built wildfire-prevention software at Palantir, Chen now aims his company at the $2.7 trillion public procurement market, helping overworked civil servants draft compliant solicitations in five minutes instead of five months. Hazel counts customers from K-12 school districts to the U.S. Navy and, in 2025, signed the City of Dallas as the first major Texas city to adopt AI for procurement.
Max Hammer
Max Hammer is the co-founder and CEO of CrowdVolt, a Y Combinator (W24) startup building a bid-ask marketplace for live event tickets - pitched as 'what StockX did for sneakers, for tickets.' A Westport, Connecticut native and University of Pennsylvania graduate, he left an investment banking career at UBS to chase the rave-ticket resale problem he and his co-founders kept hitting after attending 80-plus shows in a single year. CrowdVolt launched in Brooklyn in early 2024, raised $1.4 million in seed funding from Brickyard VC, Goodwater Capital, Pioneer Fund and YouTube co-founder Jawed Karim, and is expanding from EDM into broader live-events infrastructure.
Max Morganroth
Max Morganroth is the co-founder and CEO of Rove, a New York fintech building the first universal airline mile - a single reward currency that users earn through travel bookings and everyday online shopping, then transfer to more than a dozen airline and hotel loyalty programs across all three major alliances. A 2025 Wharton graduate who flew to 50+ countries in business and first class on points before he could legally rent a car, Morganroth co-founded Rove with Harvard's Arhan Chhabra, went through Y Combinator's Winter 2024 batch, and landed on the Forbes 30 Under 30 list for making premium travel rewards reachable for the 70+ million Americans locked out of premium credit cards.
Neha Mittal
Neha Mittal is the CEO and co-founder of JustAI (formerly Just Words), a Y Combinator W24 startup in San Francisco building an AI-first marketing engine that continuously writes, tests, and optimizes copy across email, push, SMS, and landing pages. Before founding the company in 2024, she led Retention and Growth product teams at Pinterest and Twitter, where a single notification tweak - changing "Elon tweeted" to "Elon just tweeted" - added roughly 800,000 users and planted the seed for her company. A computer engineer turned product leader, she earned a master's at UC Berkeley's School of Information and has raised about $2.2M in seed funding from Cloud Capital, Peak XV Partners, and Y Combinator.