Enterprise Startups funded by Y Combinator (YC) 2026

Rational builds AI coworkers for accounting firms. Our agents onboard themselves to the firm, build a company brain, and do the work, from month-end close to tax prep. In addition, they follow up with clients and communicate with the right members of your team.

screenpipe record and learns how you work and turns it into a searchable memory, SOPs, and AI agents. Data is stored on your device or where your team choose, open source.

Nebula Security is an AI-native cybersecurity company founded by world-class hackers. Nebula Security provides Mythos-level cybersecurity reviews and product security auditing, conducted by our state-of-the-art AI agent and world-class hackers themselves, covering everything from code-level vulnerabilities to architectural weak points. We were the first team to build an nginx RCE and the first to root Android 17. Our co-founders include members of the world’s No. 1 CTF team, DEF CON winners, Black Hat speakers, and PhD in cybersecurity. We have won $400K in bug bounties by exploiting the Linux kernel and Chrome browser. “Audited by Nebula Security” is a mark of serious security credibility: a signal to customers, investors, and partners that your product has been reviewed by the world’s best hackers.

Shepherd automatically ingests every tool your team uses into one unified memory you can index, and your agents can act on.

Rex is an AI-native service for order to cash. We replace people-heavy operations with AI agents that continuously manage invoices, customers and exceptions. Order to cash is a $60B outsourced function because the work is too messy for traditional automation. Every customer has different context, exceptions do not follow clean rules, and the next step is often buried in emails, portals, handoffs, or someone’s memory. Rex agents run continuously in the background and resolve work to SLA standards so cash keeps moving. We're live with pre-IPO tech companies, managing >$500m in receivables from F100 companies, cutting manual follow-up cycles from weeks to hours. We founded Rex after spending four years building Sequence, an a16z-backed finance ops platform, from zero to Series A — where we saw firsthand that at-scale, O2C still runs on manual labour. Rex is the #1 winner of the Vercel AI Accelerator out of 2,500 teams, selected by Guillermo Rauch and leaders from OpenAI, Anthropic, Browserbase and more.

Enterprise software implementation is broken, and it has been for decades. Every rollout, whether it's a traditional ERP or a new AI system, requires months of manual integration, configuration, and tuning done by armies of system integrators and forward-deployed engineers. Lab0 builds agentic systems that automate this layer, compressing months-long implementations into weeks.

Ontora is an AI Agent that interviews every employee to map how work actually gets done and identify bottlenecks. Consultants spend months doing this manually; Ontora does it in hours.

Visibl makes custom chip development dramatically faster and lower cost for hardware companies. Today, most hardware companies that need a custom chip have bad options: sign a massive contract with an incumbent like Broadcom, pay a traditional design house millions of dollars and wait 18+ months, or keep using off-the-shelf chips and FPGAs that are not optimized for their product's cost, power, performance, size, or manufacturability. We handle the full path from architecture and design through verification, foundry management, and production. That makes custom ASICs accessible to robotics, drones, industrial, IoT, and edge hardware companies that were previously priced out of the market. As more hardware products need differentiated silicon, we think custom chip development should be available to far more companies than it is today.

Soren is the AI workspace for operations teams. Soren unifies your people, workflows, and business knowledge into one intelligent workspace that automates repetitive work, accelerates decision-making, and helps your organization operate with greater speed and efficiency. Learn more at https://www.usesoren.com

We're building the first fully autonomous accounts payable platform. Our AI clerks handle your entire AP workflow: invoice processing, GL coding, PO matching, approvals, responding to vendors, fraud detection and reporting. From the moment an invoice hits your inbox to the moment it's paid, no manual steps required. We integrate with 16+ ERPs including QuickBooks, NetSuite, SAP, Dynamics 365, and Workday. Find out why enterprise teams choose Mod AI at usemod.ai.

Adaptional is building agentic AI for insurance claims. Claims are 75% of every dollar in the $1T insurance industry -- and one of the most under-optimized areas, still managed by adjusters working hundreds of files by hand. We're changing this with AI claims review agents, already deployed at some of the major P&C carriers. In the future, claims will be powered by an intelligence layer that manages files and escalates actions to human adjusters. Adaptional is building the AI system that will be the foundation for every claims department across P&C insurance.

Finto builds AI accounting software for enterprise finance teams. We automate the invoice-to-pay process from their email inbox to their ERP. Cutting out 80% of the accountants daily work in invoice recording, account coding and invoice approvals.

The intelligence layer behind modern life sciences engagement, enabling compliant, continuous conversations across HCPs, patients, and field teams

We automate complex, regulated operations in financial services—no APIs, no engineering required. We hit $500K ARR in just four weeks because customers deploy instantly. Our AI Operator learns by observing existing workflows and SOPs, securely controlling browser and desktop applications to automate up to 96% of tasks.

TamLabs' agent teams deliver professional work products for experts across law, finance, and consulting with speed and precision.

At Agentin AI, we build Agents that move data and take actions across enterprise systems, like Salesforce, NetSuite and SAP. These agents are difficult to build because each enterprise heavily customizes their systems but we solved that by training our Agents to learn and adapt from failures, applying reinforcement learning techniques we developed.

Oki Home is your digital home for all your personal memories and experiences. Using fully private local AI, it grows with you to understand and help you in your life.

superglue learns how your systems work from your company's knowledge and performs the implementation that normally requires human coordination and engineering work. Implement NetSuite, Sage Intacct, SAP, Business Central or Acumatica in days. Agents map and migrate legacy data, configure the system, and keep data in sync post go-live. Connect ERP, CRM, databases, and internal systems to AI platforms like Claude. Create governed data access for AI agents and track data usage across your org. Connect customer systems, import historical data and get new integrations live in hours. Let agents manage the entire implementation process end-to-end.

AutoComputer is a desktop robotic process automation system.  Given just a text prompt, our AI automates tedious tasks such as financial data entry by performing all the clicks and keystrokes for you.

Galini guardrails-as-a-service filter harmful inputs and outputs based on company policies and industry regulations. We make it easy for enterprises to create, test, deploy and refine guardrails. With Galini, product and engineering leaders enjoy peace of mind knowing their AI apps are compliant at run-time, and save $1-10M in costs from avoiding in-house build

CTGT is an applied AI research laboratory fundamentally solving the alignment and reliability bottleneck for enterprise AI. For enterprises, especially highly regulated industries, deploying Generative AI is historically a compromise between capability and catastrophic risk. Standard enterprise approaches, such as RAG, fine-tuning, and prompt engineering, operate at the wrong abstraction layer. They are inherently probabilistic, carry massive engineering overhead, and fail to deliver the mathematical certainty required by the Fortune 500. We focus on the science of representation engineering and have productized mechanistic interpretability. By opening the "black box" of neural networks, CTGT has developed a proprietary architecture that intervenes directly at the model's representation layer. We convert complex corporate SOPs, SEC/FINRA regulations, and strict editorial rulebooks into machine-readable "Policy as Code," enforcing deterministic constraints and defensible audit trails without requiring expensive model retraining. The result is a step-function breakthrough in enterprise AI economics and capability. Our fundamental architecture allows organizations to run secure, self-hosted open-source models that mathematically match the reasoning and performance of frontier models. Benchmarks from our enterprise deployments demonstrate a 96.5% prevention of hallucinations, up to a 3.3× accuracy multiplier in complex domain-specific tasks, and an 80-90% reduction in human-in-the-loop manual review. Backed by an $8M seed round from Gradient Ventures (Google), General Catalyst, and Y Combinator, CTGT is currently deployed with Fortune 500 companies, including Tier-1 financial institutions and global media conglomerates, giving them the deterministic control necessary to deploy enterprise AI with zero margin for error.

At Redouble AI we have developed Silverlake, a Java-native agentic AI operating system for enterprise. While other AI solutions force enterprise stakeholders to embrace unfamiliar concepts in an unfamiliar language, we do the opposite: we slot agentic AI right into the enterprise comfort zone - by mapping all agentic concepts onto established enterprise primitives in their own language, their own security model, their own infrastructure. It’s like moving from Bitcoin to Stablecoin, just for agentic AI. When we did YC we realized there was no framework or platform that gave us as enterprise and workflow automation veterans what we needed to build truly secure, reliable, and scalable agentic solutions for mission-critical workflows. That’s why we spent the past 18 months building Silverlake from the ground up. We empower the 12 million Java engineers worldwide to write and deploy their own AI, securely, at scale. They define an agent in a few lines of code, and our platform does everything else, from orchestration to permission control, from auditability to rate limiting, from long-running agents to autonomous coordinated networks that perform the work of entire departments. Silverlake has been developed with design partners across biopharma, insurance and financial services. For example, our agentic workflows write submission-ready Clinical Study Reports that are hundreds of pages long, analyze entire datarooms full of financial and operational data for private equity investors, and automate claims processing for a large insurance player. We are backed by Y Combinator, Exponential, Transpose Platform, Tiny VC, and the Oxford Seed Fund and advised by Java inventor James Gosling and automation guru Professor Christian Terwiesch.

Opslane verifies that AI-written code actually works. Opslane opens your app in a real browser, clicks through what the PR changed, and posts screenshots, video, and data checks as proof it works.

Saphira is the easiest way for hardware products to get safety certified and reach market faster, such as industrial robots and heavy machinery.

Maitai makes building reliable AI applications easy. We autocorrect faulty model output in real-time and automatically fine-tune models that learn from their mistakes. This means our customers get more reliable results immediately, and over time, they gain custom models built specifically for their application that only get better and faster. You wouldn’t hire an employee who doesn’t learn from their mistakes—so why use a model that doesn’t? Maitai is here to deliver the next generation of reliable AI inference.

The New Money Company protects invoices with insurance. We help businesses expand to buyers in new markets or industries by offloading the risk of buyers not paying their bill. Support number: +18889975745.

NowHouse helps stock brokerages settle trades instantly.

Want to apply AI to your IT Helpdesk queue? Risotto helps you grant software access, limit access/permission grants by time, serve knowledge, and get approvals from people like managers. All using natural language directly in chat (AKA "ChatOps") IT teams spend too much time manually provisioning software and answering the same question repeatedly. We help them improve resolution times, reduce SaaS spend, and enhance security with 24/7 automated software access and IT support. Check us out at: https://www.tryrisotto.com

You closed your first few deals on handshakes and Stripe links. Now a customer wants a ramp-up, custom terms, or annual billing — and suddenly you're duct-taping spreadsheets to your CRM. Most CPQ tools are built for 500-person sales orgs with a dedicated RevOps team. Veles is built for you. AI agents handle quoting, approvals, and deal docs end-to-end so you can run a real sales motion without hiring a deal desk. It's free for founders just getting started, and pricing scales with the number of active contracts you manage — so we only grow when you do. No CRM consultant, no six-month rollout. Just connect Salesforce or HubSpot and start closing.

Onyx is the open source chat UI connected to your company’s docs, apps, and people. We ingest and sync from all sources of information (Google Drive, Slack, GitHub, Confluence, Salesforce, etc.) to provide a centralized place for users to ask about anything. Imagine your most knowledgeable co-workers, all-rolled into one, and available 24/7! Check us out on Github: https://www.github.com/onyx-dot-app/onyx Or visit our website: https://www.onyx.app/

Tracecat helps AI-native security teams build agents and automate work. Used by the most demanding security teams in mission-critical environments across defense, finance, federal and more. Open source and community driven at it's core: https://github.com/TracecatHQ/tracecat

Garages, dealers and lenders receive and make a huge number of calls across the customer journey, covering many uses cases. Customers don't want to be kept waiting and want to be proactively informed with reminders and updates by their service providers. VoxOps automates up to 80% of their inbound and outbound calls, whilst automating downstream workflows.

Rimward helps operators of solar farms and other remote outdoor infrastructure detect intrusions from existing camera networks. We turn existing CCTV into operator-ready alerts with video verification, so security teams can reduce false alarms, respond faster, and avoid heavy hardware retrofits. We are focused on sites where recurring theft, perimeter intrusion, and low staffing make traditional monitoring noisy and operationally weak. Our approach is software-heavy, field-oriented, and built to work with real site constraints.

We are Alguna, building a modern platform that helps B2B companies price deals, send quotes, bill customers, and collect payments - all in one place. Our mission is to create the most efficient revenue engine for B2B SaaS. Today, many companies run these processes with spreadsheets and a patchwork of separate tools. That leads to slow approvals, manual work, mistakes, and missed revenue—especially as pricing gets more complex. Alguna replaces that mess by connecting the entire flow from **quote to cash**: what sales sells becomes what finance bills, automatically. We help teams automate invoicing, handle usage-based or custom pricing, and reduce back-and-forth between sales, finance, and engineering. The result: growth-stage startups and enterprises can close deals faster, bill accurately, and scale revenue operations without adding headcount or building internal systems.

Metalware develops advanced firmware security solutions for critical infrastructure, protecting industries like aerospace, defense, automotive, telecom, and healthcare from cyber threats. Our product is an automated, intelligent binary fuzzer that enables organizations to efficiently discover and remediate security weaknesses in hardware products before deployment.

Maven Bio is a 10-person seed-stage team in Boston building the market intelligence layer for life sciences AI. Three of the top 10 pharma companies are onboarded, and we have 20+ enterprise accounts across pharma, consulting, and investing. Customers report a 40% reduction in low-level analytical work. We are growing fast and heading for a Series A. Our buyers are senior BD, CI, Strategy, and Investing leaders.

Do you run into these problems with Github Copilot? - Bad completions that break your train of thought when you’re writing comments? - Doesn’t close brackets, or adds too many closing brackets? - Functions, variables, and libraries not being auto-imported after accepting a suggestion? - Multi-cursor mode not working? - Wish copilot could name your variables? - Wish copilot could trigger in the middle of a line? - Want to stop wasting time with GPT3.5 chat and default to GPT4? Double is an high quality alternative to Copilot inside VS Code, engineered for performance. It’s designed with great craftsmanship by people who care a lot about getting the small details right.

Clueso is the fastest and easiest way for companies to generate high-quality instructional videos and documentation, ideal for customer education/onboarding and employee training. Our AI transforms simple screen-recordings into studio-quality videos and step-by-step documentation in minutes.

With Kyber, companies operating in regulated industries can quickly draft, review, and send complex regulatory notices. For example, when Branch Insurance's claims team has to settle a claim, instead of spending hours piecing together evidence to draft a complex notice, they can simply upload the details of the claim to Kyber, auto-generate multiple best in-class drafts, easily assign reviewers, collaborate on notices in real-time, and then send the letter to the individual the notice is for. Kyber not only saves these teams time, but significantly improves consistency, compliance, and personalization.

Finic helps fraud teams catch organized fraud earlier, act on it faster, and turn discoveries into lasting defenses. Our AI agent analyzes structured and unstructured data across your systems to proactively surface the fraud that rules and scoring models miss.

At Latent, we're building medical language models to tackle the trillions of operational overhead weighing down healthcare. Our flagship product streamlines authorizations for life-saving drugs by analyzing EHR records and surfacing the most relevant data. We've built our product and signed enterprise contracts with some of the largest health systems in the US.

B2B advertising is broken: poor targeting, wasted ad spend, bot traffic, and 3rd party-cookies. Vector helps marketers drive pipeline with contact-level targeting and revealing who's seeing your ads (even if they never convert).

Alphawatch AI offers a secure document agent that allows you to manipulate and convert PDF and Word files, along with your internal knowledge in your knowledge base.

Build, govern, and deploy enterprise AI agents and MCP servers Powered by your data, subject to enterprise controls

IcePanel is a collaborative diagramming tool that helps software engineering and product teams align on technical decisions. Teams use IcePanel to create a map of their software systems, giving them full context about how it works.

Diversion is a modern alternative to Perforce and Git, designed for digital entertainment industries like games, virtual production, animation, and 3D/VR. It streamlines collaboration by providing GitHub-like version control for large files and complex projects, integrating seamlessly with tools like Unreal Engine. Built for studios handling massive assets, Diversion ensures efficient workflows, secure storage, and effortless tracking of project history, making it the go-to platform for creative teams managing evolving digital content.

CatchAll by NewsCatcher is a recall-first web search API built for queries where the results are spread across hundreds or thousands of pages on the web. Instead of returning the top ranked links like traditional search engines, CatchAll retrieves a large candidate set from the web, validates which pages actually match the query, and extracts structured records of real-world events. Developers and data teams use CatchAll to answer “long-list” questions such as tracking regulatory actions, funding rounds, product launches, corporate expansions, or cybersecurity incidents. The output is not just links but clean, deduplicated datasets that can power AI agents, monitoring systems, analytics pipelines, and market intelligence workflows. CatchAll runs on the data infrastructure developed by NewsCatcher, which continuously indexes millions of articles and public web pages across a global network of sources.

Artificial Intelligence that converts manufacturing drawings into costing quotations in minutes, not weeks.

Quinn makes the highest-stakes scientific decisions in drug development. Which drugs to bet on, what to develop next, how to get them to patients. In days instead of months.

Superbar instantly answers questions on your website and drives conversions 24/7.
It's like having a top salesperson on every page.