Y Combinator Startups in New York 2026

We’re a passionate team of dreamers and builders, determined to liberate small businesses from the not-so-fun aspects of the job so that they can focus on what’s fun and important.

Scentbird inspires fragrance lovers to go beyond the ordinary and sample scents that evoke passion, confidence, and the unknown. Our mission is to revolutionize the way individuals perfume by bringing the ultimate fragrance playground right to their fingertips. By way of a monthly subscription service (starting at $14.95 a month), members can choose from over 500+ designer colognes and perfumes each month! See what we're all about at: www.Scentbird.com // @Scentbird *WE'RE HIRING!: https://www.scentbird.com/careers

SmartAsset is an online destination for consumer-focused financial information and advice. Reaching approximately 59 million people each month (as of January 2024) through its educational content and personalized calculators and tools, SmartAsset's mission is to help people make smart financial decisions. Additionally, SmartAsset powers SmartAsset AMP, a national marketplace connecting consumers to financial advisors. Building on SmartAsset’s relationship with millions of investors, SmartAsset AMP connects financial advisors directly with prospects who meet their target client profile. Our algorithm matches consumers with up to three fiduciary financial advisors. In 2023, SmartAsset helped advisors close an estimated $34 billion.

Beacon Health (YC W26) is building AI agents for primary care - starting with value-based care. Primary care is the primary source of care for 200M Americans but physicians don’t have the bandwidth to manage their patient panels - preventative screenings, prior authorizations, referrals, and risk adjustment, all important work that steals time from patients. Our Al agents handle workflows for them directly in their EHR. We own them from end to end - putting their value based care on autopilot. We’re on a mission is to bring joy back to primary care.

Maywood automates deal execution for investment banks, from decks to diligence The Maywood platform automatically generates finished, on-brand CIMs / presentations, models, and diligence responses that prioritizes editability and auditability, with best-in-class security ensuring information stays protected. Maywood reinvents the deal process with a single, living workspace for every deal.

$8 trillion dollars of market cap needs to know what the FDA thinks. Rhizome AI makes that happen. Users ask a question and get an answer backed by up to 1,000 documents, where each statement has a citation. The data is pulled from terabytes of authoritative regulatory & clinical databases. Chetan started his career as a research engineer, but quickly realized he enjoyed building more than research. He joined EvolutionaryScale as their sole founding product engineer, launching their developer-scientist platform and scaling to tens of thousands of users and billions of API calls. He was also #16 at Instabase helping banks with document & imaging processing, closing $7m as the technical lead. Being so plugged into the AI world, he saw lots of AI drug discovery companies, but very few AI companies focused on bringing those drugs to market. Talking to people, it quickly became clear that a big, expensive barrier was understanding FDA thinking. Rhizome’s first product, Rhizome Ask, went from launch to six-figures in revenue during 2025.

MouseCat enables companies to automatically detect, investigate, and mitigate emerging fraud trends

Sequence Markets builds execution technology for digital-asset markets. Our platform improves trade routing across venues and helps institutions and active investors access better pricing, lower slippage and more reliable execution. We operate as a fully non-custodial technology provider and integrate with existing brokers, exchanges and custodial platforms.

Mantis provides the foundational infrastructure layer that enables companies to build human-in-computer models. We unify fragmented data sources, simulate human anatomy and physiology, and validate against real-world outcomes. From motion capture and biometric sensors to medical imaging and training logs, our platform transforms disparate data into validated digital twins ready for production applications.

Chasi helps equipment dealers grow and retain customers with 24/7 VIP treatment across all channels. Chasi’s AI agents act as executive assistants for sales and support reps, automating follow-ups, data collection, status updates, and outreach so teams can spend more time with customers and less on admin. Over half of dealer payroll goes to sales and support, but a third of that team’s time is lost to admin. Fleets still run under 60% utilization, most branches lack after-hours coverage, and the aftermarket is largely reactive. Chasi plugs these revenue leaks by keeping units rented or sold, chasing every lead, and driving the right parts and service before machines fail.

Autonomous is a superintelligent financial advisor at 0% advisory fees. Today, managing your money means one of two bad options: DIY your money: You end up with accounts everywhere (401k, IRAs, brokerage, crypto, savings, equity, secondaries). Your spreadsheet is always wrong. You make expensive mistakes because this isn't your full-time job. Hire a financial advisor: They'll manage your money and charge 1-2% of assets annually. Run that math over multiple decades and you're handing over half your net worth to fees. Neither path can economically deliver the sophisticated, personalized strategies the ultra-wealthy use to compound wealth: strategic tax-loss harvesting across individual securities, systematic risk management, portfolio-backed borrowing to defer capital gains, access to alternatives, etc. These aren't secret – they're just economically impossible to deliver at scale through traditional human advisors. Robos were supposed to fix this, but they were designed in a pre-AI world. In practice they just manage cookie-cutter portfolios. They don’t coordinate across your 401(k), taxable accounts, mortgage, equity, and cash flow, they don’t help with real decisions like job offers, windfalls, or concentrated stock, and they don’t deliver institutional strategies. That’s why, even after a decade plus, the biggest robos are still <$100B AUM while old-school advisors like Raymond James / Edward Jones sit on trillions. We’re doing for financial advising what Robinhood did for brokerages. Think of it as a full-stack, AI-native wealth strategist that brings billionaire-style playbooks to ordinary investors. Autonomous is built around a frontier-scale reasoning engine—an AI that perceives global events as they unfold, understanding their deeper implications for markets and and most importantly, how these events will impact your investments.

F2 is the AI platform for private markets investors. Purpose-built for private credit, private equity, and commercial banking, F2 accelerates diligence, underwriting, and portfolio monitoring, helping teams evaluate deals over 60% faster. F2 turns unstructured deal data into investment-grade analysis and polished memos in minutes. Unlike general-purpose AI, F2 is built with the domain expertise and depth to handle the most complex financial analysis. Already trusted across thousands of deals, F2 makes collaboration easy and retains historical context, so past work compounds into future wins. Headquartered in New York City, F2 is backed by leading investors including NFX, Left Lane Capital, and Y Combinator.

Scott AI is the agentic workspace where teams align on spec before any codegen runs. Teams already use multiple coding agents to build. Different coding agents will continue to evolve and have diverse strengths. An engineer will entrust a long-running agent to add dark-mode end-to-end while they pair carefully with an IDE-based agent to land a critical DB migration. These execution agents cannot be the decision layer because they are biased to their own tool, they are not neutral. Scott AI is the neutral, agent agnostic decision layer for the age of multi agent building. Teams will use Scott as their decision workspace to finally ditch google docs and notion as their primary spec alignment layer.

Overdrive Health offers AI powered medical billing services, helping providers get paid more money in less time. Our technology enables us to provide the best quality insurance and patient billing services for a fraction of the usual cost

We deliver high-quality, cost-effective healthcare to employees through text. Employers cut 10–20% of healthcare spend. Employees get concierge care that improves outcomes. Our AI agents analyze clinical data to identify care needs. We treat common conditions through our integrated virtual clinic. For more complex care, our agents find the best in-network providers using millions of price and quality data points, and handle end-to-end appointment booking.

Nori is a concierge-level AI health coach in your pocket. It takes all of your health data—Apple Health, medical records, wearables, everything—and boils it down into a personalized daily plan. Users love it: “It's truly one of the best apps and I check it first every day. Since using Nori, I've been limiting devices in bed and eating earlier—and I'll be damned if it's not working... I started getting more deep sleep, my resting HR dropped to 43, my recovery improved.”—Jen, Nori user"

Fernstone is a a full-stack insurance brokerage for complex risk. We are competing directly with the 40,000 commercial insurance brokers in the US that earn $80B in revenue each year. Today, construction and security companies use Fernstone to obtain coverage to close contracts and obtain licenses.

Freeport allows you to turn tweets into meaningful alpha. Get news as soon as it brakes with the associated trade. Scroll, Trade, and use Perps all in one app!

RowFlow replaces clunky web forms with natural conversations that run over text, slack, or wherever your users are. Our platform increases your form’s response rates while cutting your internal overhead in half. With RowFlow, you can take any existing form and instantly convert it into an AI-powered conversation. New flows launch in minutes and reach respondents over your preferred channel or embedded chat. We guide the exchange, follow up automatically, and return clean structured data without extra work from your team. Forms power billions of business interactions yearly. Whether it’s forms for client intake, registrations, compliance, feedback, or surveys, they all follow the same painful pattern: low conversion, messy data, and frustrated users. Teams have long tolerated forms only because there's been no scalable alternative for collecting structured information from people - until now. Our goal is for RowFlow to become the new default way for how organizations collect user data in an AI-first world.

Bezel helps fashion brands create virtual photo/video shoots with AI. Upload images of clothes, select the human you want to model it, and Bezel generates pictures and videos that rival a full studio production. Every detail of the clothing is rendered flawlessly. Try it for yourself.

Palace (palace.so) plans, coordinates, and executes daily back-office work for trucking fleets. By automating the manual decisions that consume planning, dispatch, and CSR teams (assigning loads, managing appointments, communicating updates, and resolving exceptions) carriers can increase revenue-per-driver while running leaner teams. Leeds and Derek have been building together as close friends for over six years. The team have been early PMs/engineers at exited startups and decacorns and worked on the algorithms behind Amazon’s robotic logistics systems.

Our mission is to build self-improving AI agents. We're here to close the last mile reliability gap. Through calibrated llm judges and automatic evaluations, we help companies optimize their agents 10x faster than doing manual experimentation.

We are a full-service sell-side residential brokerage that lists and markets your properties. We also screen and schedule tenants showings with our AI agent for a third of the normal commission.

Interface is a frontier research lab focused on high-fidelity human simulation. We build systems that model human appearance, behavior, and interaction for world-model research.

Prosper builds AI phone agents for healthcare providers. Our agents automate manual, time-intensive workflows like patient scheduling, balance reminders, claims status checks, benefit verification, and prior authorizations. We integrate with 80+ EHRs, go live in 3 weeks, and offer a no-code interface for customization. Today, Prosper handles thousands of daily calls for dozens of providers, reducing costs by 50% and tripling productivity. We’re building the AI-first operating system for healthcare to eliminate the $200B lost to administrative overhead every year.

Fleetline is building the first complete-context algorithmic load planner for mid to large-sized trucking fleets. Today’s dispatchers face an overwhelming task: balancing regulations, customer demands, live fleet data, and individual driver needs, all while coordinating across siloed tools and teams. Mistakes run rampant, and each mistake is thousands of dollars. Even the select fleets using algorithms that have fleet-wide context struggle: the outputs are rigid, hard to interpret, and are blind to real-world nuances like driver preferences and schedule exceptions. Fleetline solves this by combining advanced optimization with LLMs that can easily adapt algorithms to each fleet’s needs and capture driver-specific information. The result is smarter planning truly optimized for every fleet and its drivers.

We help electrical contractors do electrical estimates way faster using AI. Electrical contractors submit RFPs (request for proposals) to win contracts to jobs like building the electrical infrastructure for a new data center, and they compete with other electrical contractors to win these jobs. The process of submitting these RFPs take a majority of an electrical contractors time, specifically in providing an estimate for the job, and Bidflow aims to optimize the redundant paperwork that goes into this process.

Eden runs marketing for ecommerce brands. Our AI agents can autonomously schedule campaigns, run A/B tests, and personalize experiences across email, SMS, site display, and more, so brand founders get enterprise-level marketing without needing a team or agency. Alex and Jason have been best friends for 8+ years. They met at TJHSST, became nationally ranked debate partners, and later coworkers at Datadog. Alex led operations at an AI shopping startup, working directly with brands like TheRealReal, Poshmark, and Farfetch. Jason was at Reddit's mobile ad retargeting team and is a second-time founder, previously exiting an AI recruiting startup doing $50K MRR.

Albacore is building 6ft-long drone submarines to deter littoral conflict. Our first product, Ghostfin can be launched from land in minutes, and carry precision effects or conduct sensing missions up to 1,000 nautical miles. Our team consists of multiple serial entrepreneurs in defense and hardware who have worked alongside top DoD leadership on autonomous platforms.

Locata is an AI referral management platform for Primary Care. We deploy AI agents to automate every step of the referral process that back-office staff face daily, from submitting prior authorizations to broadcasting updates and following up with patients. This frees up staff to focus on patient care. Primary care back-offices are severely understaffed and overburdened by administrative work associated with referrals. Additionally, patients suffer navigating the complex referral process, which can have disastrous health effects if they don’t get the care they need. These factors point to a glaring gap in the system—where out of over 100 million specialist referrals issued annually in the US, only half are actually completed. Locata is tackling this problem head-on, saving administrative staff hours each week and ensuring that the referral process goes as smoothly as possible for patients and their providers. Alejandro and Josh met at Stanford where they graduated with BS degrees in Computer Science. Alejandro was a senior software engineer at Meta’s Reality Labs where he led development of several AI features for wearable products and prior to that conducted AI research at Stanford Medicine. Josh graduated with a masters in Computer Science, specializing in AI, before working as a software engineer at Google where he developed AI products that served over 1 billion users. Within two weeks of building our product, we signed a major regional health center and have saved them over 100 hours of work in our first month live.

GhostEye builds an exposure map of your employees, then simulates personalized attacks across email, voice, SMS, deepfakes, and help desks.

Alter is a zero-trust identity and access control platform purpose-built for AI agents. It wraps every tool call in strong authentication, fine-grained authorization, and real-time guardrails, so agents can move fast without breaking things. Each request is verified at the parameter level, authorized against granular policies, executed with least-privilege access, and fully audited in real time. Unsafe actions, whether it’s a rogue DROP TABLE or a payment above policy limits, are blocked before they touch production. Behind the scenes, Alter manages credentials, issuing ephemeral, scope-narrowed access for every interaction, then rotating or expiring it in seconds. The result: no long-lived secrets, no blind spots, and no surprises in audit. With Alter, teams can move fast on AI agent initiatives while staying fully compliant with SOC 2, HIPAA, GDPR, and internal security standards. A CISO-ready dashboard delivers real-time visibility, detailed audit logs, and compliance-ready controls, removing silos, eliminating excessive permissions, and providing complete oversight of every agent workflow.

Channel3 is building a database of every product on the internet. Google and OpenAI maintain vast product graphs, but keep that valuable data to themselves. Channel3 gives every developer access, opening a world of possibility for new shopping experiences across any vertical. For instance, developers could build AI fashion stylists or give their agents shopping capabilities. We don’t just collect product data; we actually understand it. With the latest image classification and reasoning models, we can match products across merchants—even when listings and images differ—recognize variants, and surface the perfect matches for every search. As we grow, we’ll capture unique insights into what users want, click, and buy. As AI models get smarter and cheaper, our flywheel accelerates: our catalog will improve, and it will be even easier for developers and vibe-coders to build on our infrastructure. To further incentivize building on Channel3, we provide built-in monetization; developers earn commissions on sales they drive. Alex discovered this need while building an AI tutor that could recommend products and earn affiliate revenue. When no solution existed, he persuaded his smartest friend from Duke and former co-founder George to leave Palantir and build Channel3 together.

The greatest product teams use Interfere to spend more time building what’s next instead of maintaining what was.

CareSwift is a real-time AI assistant built directly into ambulance reporting systems, guiding medics as they document care and instantly flagging errors. Crews complete accurate, compliant reports in under three minutes, cutting documentation time by 80 percent and helping agencies avoid insurance claim denials. Ambulance crews lose valuable time completing reports after each call. Even minor mistakes cause insurance claims to be rejected.

Cleon's AI voice agents work 24/7—answering every incoming call right away and making outbound calls when you need them. They chat like real people, handle FAQs, book appointments, take orders, and pass the complex stuff to your team when needed.

Atlog creates voice agents with built-in compliance. Companies use Atlog to automate their calls and texts without worrying about getting sued.

Teach robots new skills through natural language and run reliably in production in minutes. Mbodi combines generative AI and agent orchestration, turning everyday language and quick demos into precise, reliable robot actions for industrial automation.

sieve solves data cleaning for hedge funds and investment firms by letting them get clean data in four lines of code. Currently, their data pipelines have conditions that raise for human review, which literally send an email to engineers with data that needs to be reviewed. We provide an API that integrates directly into their existing pipeline - instead of raising for human review, they can send all the same information to our API and get clean, high-quality data back. By using our AI agents built specifically for financial data collection, along with expert-in-the-loop review, we provide our clients with clean, validated data at a scale and level of quality that wasn't achievable before.

Dolphin is a startup in a box. Dolphin is a web-app builder for aspiring startup founders to ship to their first customers in an hour. Dolphin builds startups in one pass. Dolphin can setup subscriptions, AI assistants, complicated database updates, integrations, messaging, and more. Teddy and I have spent thousands of hours building complicated web apps, and we’ve developed strong opinions on how to architect them. That’s why Dolphin is so powerful: rather than give an AI free rein, we constrain it to the Dolphin architecture. Constraints breed creativity. We designed the Dolphin architecture so that, when an AI works with it, its outputs are correct, secure, and scalable.

Kirana AI is building the first full-stack AI store manager. With 100 years of family experience owning and operating grocery stores, we are starting there to prove our impact. Our first product utilizes an on-premise GPU that monitors the store 24/7, scans for theft, looks for workplace health and safety issues, and optimizes customer service. With future POS/ordering data integrations, our manager will automate many of the day-to-day tasks of running a store, such as ordering, pricing, assortment, and delegating.

Cohesive is the agentic CRM for blue collar businesses like janitorial, pressure washing, landscaping, HVAC, and pest control businesses. Cohesive fully automates sales and marketing outreach to local businesses and property owners in the service area, helping local service businesses grow even while servicing clients in the field.

Acolite builds AI teammates that handle submissions, issuing COIs, and SOV mapping across any AMS. Like an extra teammate, you simply forward an email and Acolite handles the rest.

Post-acute care loses billions to broken revenue infrastructure. Claim Health prevents it. We catch denials before they happen, automate the work drowning ops teams, and connect every step from referral to cash so agencies can scale without adding headcount. Kevin and JJ bring nearly a decade of experience building and scaling healthtech companies across different segments. Post-acute care is a $400B market with over $20B in annual revenue leakage due to broken revenue infrastructure. Claim Health is fixing that.

ParaQuery is a fully-managed GPU-accelerated Spark solution providing double the performance at half the cost compared to solutions like Databricks and BigQuery. It is fully Spark-compatible, cloud agnostic, and has seamless integrations everywhere, all without vendor lock-in. ParaQuery makes it trivial to run large SQL and Spark workloads efficiently and serverlessly, without any data migrations.

Auctor brings alignment and intelligence to software implementation, enabling every project to deliver its intended value with clarity and precision.

Weel is the next-generation all-in-one driver co-pilot that redefines your driving experience by turning your smartphone into a complete safety and navigation hub. Our free app offers a built-in dashcam with easy video sharing, a smart navigation system, and advanced AI features—such as augmented reality navigation and ADAS—that reduce your risk by up to 30%. Say goodbye to expensive dashcams and complex setups – with Weel, you get complete driving safety and guidance in one free smartphone app.

Tire Swing uses AI to power resident and applicant eligibility evaluations for affordable housing. Our software manages the resident certification and recertification process end-to-end for public and private properties supported by Project Based Rental Assistance, Low Income Housing Tax Credit, and Housing Vouchers. It serves as a drop-in replacement for third-party consultants and auditors, and helps compliance staff complete their work faster and more accurately.

Law enforcement is drowning in data. Closure helps search it to solve crime. - Hiring: UX, Engineering, AI, Ops, - Supporting: law enforcement throughout the country - Expanding: Local, state, and federal law enforcement.

OpenIntake boosts law firm revenue by converting callers into clients 24/7.