SaaS Startups funded by Y Combinator (YC) 2025

Flock Safety provides the first public safety operating system that empowers private communities and law enforcement to work together to eliminate crime. We are committed to protecting human privacy and mitigating bias in policing with the development of best-in-class technology rooted in ethical design, which unites civilians and public servants in pursuit of a safer, more equitable society. Our Safety-as-a-Service approach includes affordable devices powered by LTE and solar that can be installed anywhere. Our technology detects and captures objective details, decodes evidence in real-time and delivers investigative leads into the hands of those who matter. While safety is a serious business, we are a supportive team that is optimizing the remote experience to create strong and fun relationships even when we are physically apart. Our flock of hard-working employees thrive in a positive and inclusive environment, where a bias towards action is rewarded. Flock Safety is headquartered in Atlanta and operates nationwide. We have raised $150M in our Series E led by Tiger Global at a $3.5B valuation.

Deel is the all-in-one payroll and HR platform for global teams. Built for the way the world works today, Deel combines HRIS, payroll, compliance, benefits, performance, and equipment management into one seamless platform. With AI-powered tools and a fully owned payroll infrastructure, Deel supports every worker type in 120+ countries—helping businesses scale smarter, faster, and more compliantly. Discover how Deel makes global work simple at deel.com.

Podium is the all-in-one AI-powered lead management and communication platform used by more than 100,000 businesses to acquire and convert new customers. At the forefront of Podium’s innovation is its AI employee, who ensures businesses respond to leads instantly, anytime of the day or night—significantly increasing lead conversion rates and revenue. Podium helps businesses obtain more reviews, rank higher on Google, and consolidate lead channels. Businesses can call and text customers from the web and/or mobile app, send payment links, drive repeat business through bulk messages, and more—all managed and delivered from one easy-to-use dashboard. Additionally, with Podium’s AI Employee and automations, businesses can efficiently handle customer inquiries seamlessly across all communication channels, providing timely and accurate responses that drive sales. Podium’s innovative work has gained recognition on top industry lists, such as Forbes’ Next Billion Dollar Startups, Forbes’ Cloud 100, the Inc. 5000, and Fast Company’s World’s Most Innovative Companies. Podium was founded in 2014 and is headquartered in Lehi, Utah. It is currently backed by Accel, Summit Partners, GV (formerly Google Ventures), and Y Combinator.

Our mission is to make every search interaction meaningful & rewarding, through developer-friendly and enterprise-grade APIs. Algolia is the leading Search & Discovery API for websites and mobile apps. We help the most innovative companies across e-commerce, media and SaaS industries create powerful, relevant and scalable discovery experiences for their users. Unlike other solutions, our hosted platform reduces the complexities of building and scaling a fast, relevant digital experience and helps teams accelerate development time. More than 9,000 companies like Under Armour, Twitch, Periscope, Medium and Stripe rely on Algolia to manage 50+ billion search queries a month. Founded in 2012, we're backed by $184M in funding from Accel Partners, Alven Capital, Point Nine Capital and Storm Ventures. The team is headquartered in San Francisco with offices in Paris, London, New York, and Atlanta. To learn more, visit www.algolia.com. --- We’re looking for talented, passionate people to build the world’s best search technology. As an ownership-driven company, we seek team members who thrive under autonomy and diversity. We're committed to building an inclusive and diverse workplace. We care about each other and the world around us, and embrace talented people regardless of their race, age, ancestry, religion, sex, gender identity, sexual orientation, marital status, color, veteran status, disability and socioeconomic background

As the pace of innovation continues, it is growing more difficult to see the value of technology. Often meaningful information is inaccessible at the time it would be most beneficial. Weave threads together data, software and communication platforms to build stronger relationships at the point of contact by making valuable information instantly available in simple and intuitive formats. This delivers improved productivity, better collaboration and greater insights making it easier to meet the needs of patients and to build better business and clinical outcomes.

Founded in 2013, we believe trade can move the human race forward. That’s why our mission at Flexport is to make global trade easy for everyone. What the internet has done for bits and bytes, Flexport is doing for physical goods: giving every business the ability to connect to any customer, wherever they are in the world. That sounds pretty straightforward, but a fragmented and inefficient global supply chain has held the world back from untapped growth and innovation. By connecting everyone in the global economy we can unlock commerce, creativity, and human progress. To do so, we’re building the platform for global logistics—empowering buyers, sellers and their logistics partners with the technology and services they need to grow and innovate. Today, we work with more than 40,000 customers and their suppliers across industries like manufacturing, retail, electronics, consumer goods, tech, apparel, and beauty. Companies of all sizes—from emerging brands to Fortune 500s—used Flexport technology to move nearly $19B of merchandise across 112 countries in 2021. Interested in joining our team? Check out our open job postings on careers site and apply directly today! https://www.flexport.com/careers/jobs/

Webflow is the leading no-code visual web development platform. It seamlessly generates sophisticated code so anyone can build powerful web-based businesses and adapt to changes without developers or months of building. From entrepreneurs and creative agencies to Fortune 500 companies, Webflow makes the internet a more inclusive place by making the tools to build on it more accessible to more people, fueling business growth. Webflow powers websites for innovators like Discord, Monday.com, IDEO, Orange Theory Fitness, TED, and Dropbox. Webflow is backed by Y Combinator, Accel, CapitalG, Silversmith, and other awesome investors.

Fivetran automates data movement out of, into and across cloud data platforms. We automate the most time-consuming parts of the ELT process from extracts to schema drift handling to transformations, so data engineers can focus on higher-impact projects with total pipeline peace of mind. With 99.9% uptime and self-healing pipelines, Fivetran enables hundreds of leading brands across the globe, including Autodesk, Conagra Brands, JetBlue, Lionsgate, Morgan Stanley, and Ziff Davis, to accelerate data-driven decisions and drive business growth. Fivetran is headquartered in Oakland, California, with offices around the world. 

Biotechnology is rewriting life as we know it, from the medicines we take, to the crops we grow, the materials we wear, and the household goods that we rely on every day. Biotech R&D is radically transforming our world, but to move at the new speed of science, scientists need better technology. Benchling’s mission is to unlock the power of biotechnology. The world’s biotech leaders and innovators use our R&D Cloud to power the development of breakthrough products and accelerate time to milestone and market.

Founded in 2011, Zapier is the #1 workflow automation platform for small and mid-sized businesses. By connecting more than 6,000 of the most popular work apps, Zapier empowers its users to make the most of the tools they already use—and to focus on what matters most.

Launched out of Y Combinator’s 2009 Summer batch, Stripe is a global technology company that builds economic infrastructure for the internet. Businesses of every size—from new startups to public companies—use our software to accept payments and manage their businesses online Stripe is a proud partner of YC companies—from Airbnb (S09) to Defog (W23)—to help them grow their businesses and increase the GDP of the internet.

Didit is an AI-native, developer-first identity verification platform that makes KYC, AML, and fraud prevention instant, flexible, and transparent, with a seamless user experience and more than 70% lower costs.

AVoice brings full visibility to the physical side of sales. Most sales intelligence tools only track digital interactions — emails, calls, CRM entries — but the majority of global revenue is still driven by in-person visits. Reps take photos, record voice notes, send quick messages, and make on-site observations, but this information is scattered, unstructured, and rarely reaches the CRM. AVoice automatically captures, analyzes, and structures everything that happens during a field visit. Photos, voice notes, text updates, and observations are instantly transformed into searchable insights for reps, managers, and leadership. AVoice highlights risks, opportunities, buying signals, product issues, market trends, and territory health in real time. By turning the offline economy into usable data, AVoice gives companies the visibility they’ve always had for digital sales — now applied to the real world where deals are actually won.

Sarah AI is building the AI-native operating system for consumer goods brands—an autonomous supply-chain brain that replaces legacy ERPs and actually runs the business. Founded by Chris (2x Founder; ex-CEO at Better Nature; Forbes 30U30) and Dirk (ex-Google Data, Analytics & AI Lead), we’re backed by YC (W26). In our first month full-time, we’ve raised $1.6M and secured rapid commercial traction with 15 design partners and a growing pipeline of 30+ brands. Our mission is bold: give CPG brands completely hands-free supply chains that run themselves through Sarah, their AI ops assistant. We’re now growing a small, world-class team of builders excited to reinvent how physical goods companies operate—end-to-end, autonomous, and AI-first. If you want to work on hard problems, ship fast, and define the future of autonomous operations, you’ll feel right at home here.

Agentic Fabriq is the single control plane for data permissioning throughout your entire organization across your AI and employees. Through Fabriq, any employee can tap into AI/agents with exactly the data and tools they're cleared to use by an admin. Fabriq can be used internally with employees or externally for customers while handling the auth + integrations + permissions securely for you.

Saffron Health is building AI agents that automate specialist referrals for primary care. Primary care staff spend hours each day on tedious coordination work: searching for in-network specialists, filling out authorization forms, and chasing down medical records. Saffron's agents find available in-network providers, complete prior authorizations, and help patients book appointments, which lowers administrative costs and improves access to care.

We've built an AI property manager that automates maintenance for real estate agents. Brickwise handles tenant calls and messages 24/7, following up by chasing contractors and resolving payments. This provides higher tenant satisfaction, while also simplifying the workloads of property managers. Our property manager operates across all communication channels, including SMS, WhatsApp, phone calls, and email, making it easy to integrate with existing workflows.

Moss is building the real-time semantic search runtime for conversational and multimodal AI. Our system enables voice agents, copilots, and chat interfaces to retrieve, reason, and respond in sub-10 ms, delivering the responsiveness that makes AI interactions feel truly natural. If you’ve ever built a conversational or voice AI product, you’ve felt the lag. That moment when an agent pauses and the illusion of intelligence breaks. The bottleneck is almost always retrieval. Each query hops across networks and databases, adding delay and cost. Moss eliminates that gap by keeping retrieval close to where the agent runs. Moss runs natively across browsers, mobile devices, and servers with an optimized vector index built in Rust and WebAssembly. It enables teams to build AI products that feel instant, contextual, and adaptive. The experiences that sustain engagement and unlock new kinds of interaction. For our customers, this translates into tangible business value: stronger user retention, higher conversion, and entirely new product categories made possible by real-time understanding. Moss is already powering production pilots across voice AI and developer platforms, achieving sub-10 ms retrieval and 70–90% token savings compared to traditional pipelines.

Mantle connects to all your tools: your CRM, Mail, Calendar, Payments, Product Analytics, and more. With just one prompt, you can create agents that handle back office work for you. These agents can automate reports and email them to you, drafts emails right in your email client, generates pre-meeting research directly in your calendar event, and much more. They run quietly in the background, react to changes in real time, follow a schedule or work when you chat with them. You didn’t start up to stay stuck in admin. Turn your company AI-native with Mantle.

Sciloop is building an AI Co-Scientist that automates experimentation and analysis for machine learning researchers, allowing them to test ideas far faster than today’s tools allow. We are Bilal and Osman, International Physics Olympiad medalists and the only Pakistanis admitted to MIT in our respective years, with several years of hands-on ML research experience inside MIT CSAIL. We have built large-scale training pipelines, worked with terabyte-scale datasets, and seen the research bottleneck firsthand while contributing to scientific ML projects. We left MIT to solve this problem directly and are now building a system that can eventually accelerate scientific discovery itself. https://sciloop.dev

Arcten enables companies to embed AI copilots directly into their applications so users can accomplish complex workflows through natural language. You can add AI copilots to your product in minutes, connect them to your company’s information, and track how they’re performing -- all in one place.

We are building Siri for work, but it actually works. Caddy turns your voice into the next computing interface. It understands what’s on your screen and your intent, so work gets done while you stay in flow. Say “create a Linear ticket and share it to Slack” and Caddy handles it instantly in the background. Caddy’s founders previously led product and design for Loom’s AI suite and core products. We believe the next era of computing will be powered by voice, where computers understand what you say and what’s on your screen so work happens naturally.

Allus builds next-gen vision foundation models that bring real intelligence to manufacturing. Enabling factories to see, understand, and improve production in real time.

Nivara gives engineering leaders visibility into how humans and AI build together, helping teams spot bottlenecks, measure impact, and turn AI adoption into real outcomes. We're building the much needed copilot for Engineering Managers and empower every team to work intelligently with AI.

Expected Parrot helps companies simulate their customers with AI agents to explore pricing, product, marketing, communications and other scenarios at scale. Our open-source library and no-code web app let you design custom agent personas and conduct interviews and surveys with them using LLMs of your choice to generate results and reports. Everything is cached and reproducible, and you can send the same surveys to human respondents to validate results in the same interface.

Aside listens to your sales calls and surfaces real-time answers pulled from your docs, HubSpot, or past calls. It's like pressing 𝚌𝚝𝚛𝚕+𝚟 on your company’s knowledge into every rep – so anyone can sound like your best rep. - 🔎 Shows answers from your docs, Slack, and past winning calls - 📝 Live coaching that catches what reps miss: Aside spots what reps skip during calls and guides every rep to apply your playbook - BANT, SPICED, or your own - not after, live. - 💬 Preload your cheatsheets as Live Cards: Turn your playbooks, FAQs, and notes into instant, in-call cards. - 🎓 Coaching feedback, remembered by AI: Aside reviews every call, gives feedback, and turns it into live suggestions for your next one - so you never repeat the same mistake.

Cranston is a full stack AI accounting firm automating the $900b market for accounting labor. Our software automates reconciliation, tax compliance and financial analysis for startups & SMBs. We pull in context from all your company's apps & data, connect to existing systems of record and handle repetitive accounting work. Our team is deep in the accounting space. Sean spent 5 years building an ERP after dropping out of Stanford and Max spent 5 years building an accounting firm that did every accounting workflow you can imagine on top of ERPs.

The most flexible enterprise compliance engine that makes GRC teams 10x more efficient. Already trusted by global leaders and the largest EU enterprises. What it does: - Extracts requirements from any file - Maps them to controls and policies - Shows gaps and monitors changes - Advises on maturity and next steps

Metorial is the infra layer for AI integrations. We built the only serverless MCP runtime that can maintain state with sub-second cold starts, built-in security, and monitoring. We make it easy for developers to connect AI agents to apps and data sources at scale.

Soren builds autonomous agents to replace human engineers on manual AI evaluation tasks. Evals are essential for building reliable AI systems, yet they remain incredibly time-consuming. Teams spend countless hours maintaining their evals and digging through piles of logs and traces to debug their systems. At scale, this level of manual work simply isn’t sustainable. Soren changes that with powerful agents that work alongside your team. They reason across test cases and logs to pinpoint root causes, then run targeted experiments to surface better-performing solutions. New test cases are added whenever new behaviors are detected, so engineers can stop doing ad-hoc maintenance. Built by MIT engineers who've published leading research in this space and lived the problem. We're building a future where AI handles the work and humans simply provide oversight.

Primer is an AI agent that sells, onboards, and supports users automatically through live, personalized walkthroughs.

Uplane replaces marketing agencies with AI. We generate hundreds of ads with matching landing pages and steer the ad spend across channels like Meta, Google, LinkedIn and others. By connecting to CRM and ERP data, Uplane learns what drives profits and continuously improves campaigns. We’ve grown from $0 to $29k MRR in only 4 months. Our largest customer recently fired their ad agency at an all-time performance high, just to work with us. Now they get 20 times as many ads per month as before. The landing pages we generate convert up to 3-times as well as the status quo. Even the best marketing managers in the world can’t beat AI at personalization and A/B testing. Digital marketing is a $740B market with a 10% CAGR. Uplane charges a base fee plus up to 10% of ad spend, outperforming marketing agencies that typically charge 10-30%.

We're building the agentic workforce that will replace the bottom half of the accounting org chart. Our agents imitate accounting clerks, taking charge of the entire workflow; vendor communication, fraud detection, invoice coding and exception handling. In just 49 days, we built a compliant platform from scratch and closed 6 enterprise contracts ($165k cARR), helping customers reduce labor costs by 83%. 4 of these customers are also participating in our seed round! Evan & Jeet are previous founders from LinkedIn, Amazon, and Adyen, that met studying CS at UIUC.

Cursor for construction estimation & project management. Brickanta analyzes estimates and project details to help automate admin work, reduce errors and inaccuracy, and accelerate delivery with AI trained on the standardized building protocols.

AutoAce is building the AI native operating system for car dealerships. We start with AI service advisors that answer calls and book appointments, so no call is missed and no revenue is lost. Our mission is to connect service, sales, parts, finance, and insurance into one platform, transforming dealerships from reactive operations into proactive systems that anticipate customer needs.

At Lexi, we are building AI associates for Corporate Law. Our associates learn your firm's standards and improve with every case, having already handled 135,000+ documents across 7,000+ cases.

Semble AI builds AI agents that design building-systems (fire, HVAC, plumbing, security). Construction companies use Semble to cut down weeks on commercial and residential projects. The $600B building-system integration industry still runs on spreadsheets and manual drawings, even as building codes rapidly evolve and become more localized. It’s a massive blind spot for the tech world. Jonathan and Ethan met studying computer science at Stanford. Jonathan worked at Convergint, one of the world's largest building system integrators, specifically for the purpose of learning how this industry works. Ethan is obsessed for a different reason: His house burned down in 2017 due to a faulty fire system. They are determined to make Semble the industry standard for construction design.

We automate patent infringement detection. Our software interprets patents, identifies competing products, and generates claim charts showing who’s infringing and how. Teams use us to: - Find licensing and litigation targets - Send cease-and-desist letters - Find counter litigation - Sell IP in wind-downs - Accelerate M&A diligence We also run AI invalidity and prior-art searches to help your patents hold up in court. Companies spend up to $50k to file and maintain a single patent over its lifetime, but once it's granted, they let it collect dust. With Patent Watch, you can start turning your patent portfolio into revenue in 10 minutes.

Lua is the mid-market agent platform. We deliver enterprise reliability with the speed, flexibility, and economics that mid-market companies demand - helping them deploy AI agents that drive sales, support, and operations across everyday channels and tools. We scale through developer agencies and channel partners, enabling rapid distribution without a large enterprise sales motion or scaled forward deployed teams. We think of Lua as an agentOS that abstracts all of the complexity required to launch enterprise grade agents and combine it with the tools needed for these agents to succeed in the real world. Lua was founded by Lorcan O Cathain (CEO) and Stefan Kruger (CTO)- experienced founders who have spent 15 - 20 years each scaling technology companies across emerging markets. We sell to mid-market enterprises and developer agencies in the US and internationally. Developers are increasingly our primary ICP but we run SMB & enterprise sales motions to accelerate our learnings and further develop our product: - SMB ($25- 1k per month): fully automated self-serve agents that handle sales and support for eCommerce companies, hotels, restaurants and general service businesses. If you’ve been on our website you’ve likely seen this. - Enterprise: We directly sell to mid-market (~ $50M- $1BN) businesses across the US and internationally to eat our own dog food and strengthen our platform.

Bear helps companies capture and convert the highest-intent leads on the internet - visitors clicking from ChatGPT, Perplexity, and other AI agents. Bear owns the entire funnel from agent discovery to conversion.

Imagine AI clones you, not just your voice. We build you online with high-fidelity personas that replicate how you think, write, and sell - so our AI can handle your entire B2B content pipeline: posts, strategic comments, blogs and content engineering to achieve content-market fit. For B2B service firms and YC companies, this means turning founders' expertise into a pipeline-generating machine. Instead of executives spending 8+ hours a week trying to create content, our forward-deployed content engineers perform deep research to understand who you are -> your voice, your clients' pain points, your unique insights -> then ship and optimize content that books meetings at named accounts. Our second-time founding team includes Sky Yang (raised $150M as UCSD's youngest Student Body President) and Neo Lee (a Berkeley Math/AI researcher who dropped out to build this). We launched in November, now serve 40+ paying customers (Series-A,B and seed stage companies plus VCs, global franchises, and ghostwriting agencies). Achieving minimum 30%-70% week to week growth. 💡 Results: $20 M+ total revenue generated across clients $5 M deal closed from a single LinkedIn post $40 K inbound revenue in 1.5 weeks for one client 200+ qualified inbounds in 1 month after hitting content-market fit We’re not just another AI tool. We’re forward-deployed content engineers, building the content OS for every LinkedIn-native B2B company. 📅 Book a demo: https://calendar.notion.so/meet/skyyang333/ghost 🔗 Connect with Sky: https://www.linkedin.com/in/skyyang/

Outsourced IT is a $350B industry running on 10-20% margins. We're building AI employees to help them solve support tickets faster and increase margins to 70-80%. Yolanda worked as a Senior Support Engineer at Netflix. Her team ran 3x more efficiently than average outsourced IT companies. We're now bringing the automation Netflix has to 150K companies globally.

OnDeck is the infrastructure layer that makes Vision Language Models accessible and scalable for enterprise. We let organizations instantly find any object, behavior or event, in any footage, without needing to train a model or collect any training data. The Pain: Creating vision models usually takes months: collecting training data, training, then deployment. Worse yet: + it’s often impossible to get enough data for a specific task, and + even the best cv models struggle to generalize across diverse camera setups, workflows and environments. To overcome these blockers, we bet early on the power of VLMs and built a vision engine that can generalize across any task and doesn’t need any training data. We published a NeurIPS workshop paper showing our new methods with VLMs beat traditional CV even at niche tasks. Our current customers include: - National Defense Organizations - Robotics Research - Security cameras - Behaviour analysis for port monitoring - Off-shore oil & gas monitoring

Kalinda helps class action law firms qualify potential cases in minutes with AI. The nature of class action/mass torts involves thousands of cases for a single lawsuit. For every plaintiff (injured person), law firms involved in these cases compile everything from the products they used to the injuries they have. This data is extensive, granular, and buried deep in thousands of pages of medical, financial, and employment records and others. Kalinda extracts, summarizes, and aggregates data from these records for attorneys with AI. When scaled across an entire litigation, Kalinda works tirelessly and in parallel—turning a process that once took months into just a few hours. Kalinda provides firms with the equivalent manpower of hundreds of paralegals and legal nurses, allowing them to quickly determine which claimants are eligible and helping them file faster and in greater volume. To date, we’ve processed 600k pages of records and are live with 2 of the largest plaintiff law firms in the U.S!

Serafis is a search and discovery engine for long-form content. Our AI knowledge graph turns under-indexed data into structured market intelligence — starting with podcasts. We help investors and operators: • Accelerate research • Surface new insights • Distill signal from noise We are already live with 12 organizations managing over $70B in capital. Our library features >10,000 curated transcripts featuring top investors, Series A+ founders, and public company CEOs — searchable by person, company or theme.

Palace (palace.so) is an AI board observer that private market investors use to monitor+report on portfolio companies. We save investment teams 100's of hours every quarter on manual data entry and provide real-time analytics across their portfolio.

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.

Trace is a workflow automation platform that routes tasks to the right agent – human or AI. We enable enterprise-grade context and AI orchestration in mid-sized teams. Trace breaks workflows into clear steps, sends repetitive tasks to AI agents, and routes the rest to the right people while respecting permissions and logging every action. We help teams cut busywork and unify AI tools across departments – helping companies adopt AI in days rather than months.

We unify your contracts, service consumption, and customer relationship context so that your revenue, success and sales teams can operate from the same ground truth. With everything centralized, you can proactively react to customer signals for upsell and churn while billing is seamlessly handled in the background.

Frizzle uses AI to grade handwritten math assignments for teachers and transform them into rich analytics and differentiated assessment to help personalize instruction for every student. Teachers spend over 10 hours a week or 25% of all their work grading - Frizzle does it in minutes. Frizzle is the most valuable piece of software for teachers ever, as it eliminates the most time-consuming part of their workflow so they can focus on teaching. Frizzle was named an official White House AI Education Partner alongside OpenAI and Meta: https://www.whitehouse.gov/edai/. Frizzle was co-founded by Abhay Gupta and Shyam Sai, who met in high school over 10 years ago.