Sales Startups funded by Y Combinator (YC) 2025

Caretta is a Sales Intelligence for revenue teams. It joins reps in live calls, helping them handle information requests, questions, and objections in real time. Caretta lives in Slack to join the team conversation. Caretta gets smarter automatically: every call expands its knowledge base and objection library, turning conversations into compounding organizational advantage.

item connects to all your customer tools, gathers and enriches context automatically, and becomes your company’s source of truth — one place where your team and your AI agents share the full picture to act autonomously. At the center is the Assistant — your sidekick for daily work. It can send follow-ups, research leads, or add deals with a simple prompt. No complex UI, drop-downs or fields, simply ask. For repeatable work, you build Agents that you can train like new hires, simply by writing documents that describe your processes. item Agents run business processes across sales, support, and account management autonomously.

Karumi is an AI agent that joins a live video call with your prospects to deliver personalized product demos, 24/7, in any language. It bridges the gap between your landing page and your sales team by engaging visitors at the peak of their interest, turning curiosity into conversion. For those not ready to talk to sales but eager to explore, Karumi offers the next generation of interactive, self-guided demos.

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.

Leadbay (YC F25) discovers and qualifies SMB leads that couldn't be found before. Small-to-enterprise teams use us to prospect the most low-data-low-signals industries like construction, hospitality, even startups. Co-founders are Milan Stankovic (CTO) - PhD to make AI work with limited data, and Ludovic Granger (CEO). Try us on leadbay.ai.

We build AI agents that handle the messy, everyday conversations B2B companies rely on, answering inbound calls and emails, asking the right questions, pulling pricing and catalog rules, generating quotes, and sending structured orders into your backend systems.

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/

Nautilus is the first modern platform built for car washes, replacing expensive legacy systems that cost operators thousands monthly. Nautilus delivers mobile-first e-commerce, membership management, and automated marketing. Learn more at nautilus.co.

We're an AI Account Management army. Ambral synthesizes signals from all customer activity and interactions into AI-powered models of every account. It pinpoints who needs attention and why, and autonomously takes the best next action to drive expansions, prevent churn, and ensure no customer slips through the cracks. Team: Sam (CEO): 2x founder. Led AI at Everlywell and early PM at Wonder (now valued at $7bn). Lived the pain of losing customer intimacy at scale and is obsessed with solving it. Jack (CTO): Ex-SpaceX Flight Software Special Projects, where he developed telemetry routing and analysis systems for the most complex machines ever created. He’s now doing the same for the complexities of customer relationships.

Orange Slice is a spreadsheet where every column is TypeScript—and AI writes it for you. Describe what you want in chat ("find the CEO's LinkedIn and get their email"), and we generate the code, create the columns, and run it across thousands of rows. Our fully-typed SDK has 100+ enrichments built in: LinkedIn, contact info, company data, web scraping, AI research. Columns automatically execute in dependency order. No workflow builders—just describe it or code it.

We’re building the optimization platform for in-person sales teams. Our agents capture every customer interaction and surface insights on winning talk tracks, common objections, and revenue drivers. We have already delivered an average 13% lift in revenue for customers in pharma, real estate, and retail.

Nomi.so provides on-the-spot phrase suggestions, intelligently crafted from your transcribed sales calls and a custom playbook that adapts and grows with you, from founder-led sales to revops mastery. PS: We also increase closing rates by 12% on average and free up your sales team's mental energy.

AI notetakers clutter meetings. Multiple tabs separate knowledge. Lyra brings meetings and work together in one clean workspace. You can work on docs with AI and your team live, no screenshare required. Create follow-ups and action items as you talk. Ask your meeting questions after the call. Access auto-transcribed calls and instant summaries. Everything stays in one place with full context across every meeting.

throxy is building vertical AI agents that book meetings for companies selling into traditional industries like manufacturing, logistics, education, and finance. Outbound is broken—generic automation gets ignored, and legacy sectors are hard to crack. throxy fixes this by running bespoke, fully-managed outbound systems for sales teams. We combine AI Agents with human experts to deliver hyper-personalised campaigns that consistently generate six-figure qualified pipelines. Since 2023, throxy has powered outbound for B2B companies, from industrial manufacturers to fintech providers, replacing the need for internal SDR teams or heaps of tools, with a solution that outperforms in both speed and quality. Our founding team has built AI at JP Morgan, scaled businesses from age 14, and led enterprise sales from Seed to Series D. We’re not just automating outbound, we’re redefining what sales execution looks like in traditional industries. throxy is the AI SDR purpose-built for the sectors software forgot.

Mercura automates quotes and orders for distributors & manufacturers in the construction supply chain. Our software lets sales teams process requests in minutes instead of days. By eliminating repetitive back-office tasks, we help sales reps focus on winning more deals and driving revenue.

We're building a new agentic operating system to enable startups to automate their entire outbound sales motion with vertical AI agents. You can think of the platform as a consolidation of every tool your sales reps would need to close customers. We enable you to run your entire sales deal cycle through a simple AI-powered interface - enrich B2B contacts, find high-intent leads, and engage with clients in seconds.

Ergo is AI for sales teams, monitoring customer communication across tools like Zoom, Email, and Slack to keep CRMs such as HubSpot and Salesforce up to date. Ergo’s AI agents execute revenue-generating activities, such as automating mid-funnel follow-ups based on external market signals and past customer interactions. By eliminating manual operational tasks, Ergo helps sales teams maintain active pipelines, prevent deals from stalling, and cut sales cycles in half.

Outlit is a guided selling experience for founders and early stage sales teams. Track all your deals and always know: what to do next, who to follow up with, and what to send.

Revi helps Investment Banks, PE firms, and Corporate Development teams source new deals. We do this by using agentic workflows to replicate their end-to-end deal origination process, entirely removing the trade-off between precision and scalability. We released the first version of Revi in September 2023 and now have companies like KPMG and platforms backed by KKR and Nordic Capital using our product.

Origami is a platform that lets you build AI workflows to find your perfect leads. Build different flows that work like human sales reps, generating new leads for your team 24/7. Founded in 2024, we became Y Combinator's fastest growing startup and find perfect leads for hundreds of reps across top companies like CBRE, Rho, and Remote.com.

Crustdata provides live company and people data via APIs and full dataset delivery. We make hard to get data easy to use at scale. Customers use us to build their AI agent platforms and applications over our trusted data. We power builders of: -AI SDRs -AI sales platofmrs -AI recruiting platforms -AI investment/due diligence platforms -Internal sales or marketing platforms We serve use cases like: automatic pipeline building, pipeline prioritization, champion watching, company and people triggers for sales and marketing automation, investment deal sourcing We have developed technology that allows us to pipe in live data from over a dozen different data sources and deliver this data instantly to our customers. Our goal is index all the important data on the web and deliver it to customers in an easy-to-use way.

OpenFunnel is the Search Engine for GTM. Searching for "B2B SaaS, 501-1000 employees, uses Salesforce" - is just targeted spam. Even if you get creative with LLMs to query these databases, everyone has access to the same commoditized databases, these databases lack insights about right timing or pain-points prospects face. OpenFunnel is a time-aware search engine for insights and activities in your target segment - that reveal pain. You can search for activities like: "Find companies looking to implement usage based billing" "Find companies that moved from OpenAI to self-hosted models in the last 3-6 months" "Find companies who updated their pricing page to introduce an enterprise plan in the last 3 months" OpenFunnel continuously monitors these time-based signals, delivering actionable insights daily - so you have the fastest, unique insights that your competitors miss out on. Over 1000+ users are already discovering prospects through pain-first search, including some of the fastest-growing companies like Central, Mintlify, and Everest Systems.

💼 Augment builds AI-powered tools to automate company operations, starting with Roger—an intelligent CRM that acts as your AI-powered sales team. 💼 🚀 Built by experienced founders and backed by Y Combinator, Augment is redefining sales automation with AI-driven workflows that handle prospecting, outreach, and deal management—so businesses can scale effortlessly. How it Works – Roger, Your AI-Powered CRM 📊 A CRM That Works for You Unlike traditional CRMs that require constant manual updates, Roger actively manages your sales pipeline. It tracks interactions, follows up with leads, and keeps your team focused on closing deals instead of admin work. 🤖 AI-Powered Outreach & Engagement Roger automates lead generation and crafts personalized outreach messages across email, LinkedIn, and other channels. It continuously refines its approach based on engagement data to increase conversions. 🎯 Smart Deal Management Roger qualifies leads, schedules follow-ups, and moves deals through your pipeline automatically. It ensures your team never drops the ball on a potential customer. 📈 Seamless Integration & Insights Roger syncs with your existing tools, updating your sales data in real-time. AI-powered analytics provide actionable insights, helping teams optimize sales strategies. By automating tedious sales tasks and making CRM proactive instead of passive, Roger turns AI into your most efficient sales teammate—helping businesses close more deals, faster.

PartnerHQ is building the next generation LinkedIn. We are creating the world’s most valuable and accurate professional network graph by capturing and indexing vast quantities of relationship signals. Individuals use PartnerHQ to grow and monetize their networks. B2B companies use PartnerHQ to buy warm intros and drive high-value sales. PartnerHQ was created during Y Combinator’s W24 cohort and launched in February of 2024. Since launch we have signed on hundreds of paying companies, domestic and international. 97% of all users have come inbound or word-of-mouth.

Veles – The Sales Calculator. Veles empowers sales reps to deliver pricing effectively and craft dynamic options that maximize deal size. By integrating seamlessly with CPQs And CRMs, Veles makes every sales rep a top performer. Key Features: ✅ SaaS Pricing Calculator: Easily standardize pricing and track sales rep behavior in one intuitive platform. ✅ Standard Deal Definition: Define sales strategies and terms to expedite onboarding and maintain negotiation consistency. ✅ Performance Analytics: Gain insights into sales rep behaviors that lead to closed-won deals through comprehensive deal scoring. ✅ Alignment & Optimization: Foster team alignment by sharing negotiations and strategies for successful negotiation calls.

Octolane is the world’s first self-driving AI CRM. It updates itself, takes actions and learns from every interaction so sales teams never have to manually update data again.

Terrakotta is a power-dialer that lets sales reps leave AI-generated voicemails. Our first customers are Commercial Real Estate brokerages that use Terrakotta to clone their brokers voices, dial prospects and when no one answers, leave an A/B tested, personalized voicemail that gets a callback.

We are helping B2B companies reach the right leads with an AI sales agent custom trained on their knowledge. The goal is to reproduce the behavior of a sales top performers: - They know the product, the industry, the pain points, and the company's value proposition perfectly (trained on datas from your knowledge base, calls transcript, CRM...). - They will find the right leads, ready to buy, based on buying signals in the industry-specific channels (Linkedin, G2, Github...) or on the company's website visitors. That's exactly what the agent can do! Think of it as an expert SDR in your industry, ramp up in minutes.

Centralize helps revenue teams operationalize multi-threading and drive warm pipeline. Reps at companies like Sendoso, Ethena, and Navattic use us to automatically map stakeholders, track evolving account priorities, and fill contact gaps by leveraging their networks for warm intros.

Twine makes sure your small business never misses a potential customer because of a missed call. We use conversational AI to engage customers over text, finding out what they need and booking them for a service.

Sendblue provides businesses with virtual iMessage lines to text prospects and nurture leads. Our users on average see a 70% increase in response rate. The company is founded by Rob Haber, former ML Engineer at Scale AI, and Alex Luis, former PM at PwC's telecom practice.

Your Sales and Sales Ops team in a unified platform. No setup, Salesforce SSO and go.

Hyperbound pioneered AI Sales Roleplay technology and is the trailblazer behind the AI Sales Roleplay category for mid-market/enterprise revenue teams. We provide human-like roleplays with AI buyers customized for your ICP, giving reps more at-bats and leveling up their business acumen in half the amount of time. We then inspect live calls to certify that reps are mirroring your top performers and generate personalized AI feedback and targeted roleplays to tackle performance gaps. The goal is faster ramp times, more pipeline, higher win rates, increased ACVs, more consistent performance across your team, and more time for your managers. Interested in trying it out today? Start a free demo simulation at hyperbound.ai and contact us at founders@hyperbound.ai for next steps.

Inventive is an AI-powered RFP & questionnaire response management platform that drives 70%+ efficiency in sales response workflows. **Core benefits and features:** - **10X Faster Drafts With Highly Accurate Responses**: Using Inventive’s proprietary AI-system you can get first drafts 10 times faster, with accurate responses rooted in your knowledge sources, that you and your team can collaborate on to refine. - **Single Hub for All Your Knowledge Sources:** Inventive offers a centralized hub for all your knowledge sources. You can upload previous RFPs and relevant documents; integrate with your internal data systems such as gDrive. Sharepoint & more; upload Q&A from legacy tools or spreadsheets; and even add information from your websites. - **Fight Stale Content With AI Content Manager:** Inventive’s AI content manager proactively flags conflicting content by identifying issues within your sources, so you only use fresh and relevant content in your responses. - **Higher Productivity & Competitive Advantage With AI Agents:** Inventive offers a suite of AI agents designed to boost productivity and give you a competitive advantage. These agents can help with researching competitors, brainstorming ideas, and more. Built by a customer-obsessed team comprising an ex-exec from a Fortune 500 company and ex-AI team from Google & Stanford. Backed by top Silicon Valley investors including YCombinator.

We’re redefining how teams execute GTM by making them leaner, faster and engineer-driven. In an AI-first world, we’re replacing SDR-heavy models with a hybrid approach, empowering full-cycle AEs through a blend of manual effort and automation.

Venta AI supports sales teams in Europe with targeted outreach. Our AI employee can access the best companies and contact details and carry out automated outreach in compliance with EU regulations.

AiSDR automates sales prospecting. Our software uses AI to automatically write and send sales emails, once a prospective customer engages – we then automatically correspond and book meetings with them. AiSDR's sales emails have an average response rate of 7.1%, which is already on par with the industry response rate from emails written by humans. We are aiming to replace over 600k SDRs, that cost US companies $48B a year.

HockeyStack improves sales outcomes for B2B companies by helping them record and understand every interaction their customers have with their marketing, sales reps, CSMs, and products. We map every customer touchpoint from ad impression to closed won and to upsell using our own tracking script and native integrations to the B2B GTM tech stack. Building this source of truth allow us to give companies previously hidden insights that generate incremental revenue, such as: - Deploy marketing budget: "Launch this ad campaign to this audience to generate $XM in pipeline" - Target the right accounts with the right messaging: "These accounts have the highest likelihood to convert, put them on this email sequence" - Convert more of the pipeline: “Pied Piper hasn't visited the site for 8 days; give Jim a phone call”

Persana AI | The Agent Layer for Modern GTM Teams AI Superpowered Sales & GTM Intelligence — built on autonomous agents AI agents that research, enrich, and engage your best prospects — autonomously, not just automated. The Shift from Tools to Agents: Your GTM stack is fragmented. Multiple enrichment providers. Workflow tools with hard limits. Manual triggers. Disconnected data. Persana consolidates it all into one agentic platform that thinks, learns, and executes — 24/7. What Persana Does: 🔍 Multi-Source Intelligence – 100+ data sources tracking funding, hiring, tech changes, real-time intent signals, waterfall data for finding emails, phone numbers and more 🤖 Autonomous Execution – Run complex workflows across 100K+ prospects without manual triggers or platform limits 🧠 Continuous Learning – AI that adapts based on what actually converts to pipeline, not predefined rules ⚡ Native CRM Integration – Bi-directional sync with Salesforce, HubSpot, and your entire GTM stack Why Teams Choose Persana: Replace fragmented point solutions with one autonomous platform - Break free from workflow ceilings and platform constraints - Access comprehensive signal intelligence across all major data sources - Scale prospecting without adding headcount Results Customers See: ✓ 95% increase in qualified pipeline ✓ 65% faster sales cycles ✓ 3+ weeks per month reclaimed from manual work ✓ 30% higher conversion rates The Technology: Trained on 700M+ contacts and 200M+ companies, and 100+ data sources. Multi-agent architecture combining research, enrichment, and execution. Proprietary embeddings fine-tuned for GTM use cases. The Team: Built by LinkedIn engineering veterans who scaled systems to billions of users. Backed by Y Combinator, Dharmesh Shah, Race Capital, and Stage 2 Capital. 🚀 Join 15,000+ GTM professionals using agents to boost their revenue → persana.ai

Floworks (https://floworks.ai) is building a suite of AI employees that helps business to run several business functions such as sales, on autopilot. Our flagship product, Alisha is an AI SDR that performs the full outbound SDR job- fully autonomously without any human involvement. Our AI SDR Alisha can perform ICP research, find out prospect lists, research about each prospect across 180 web sources, write highly personalized emails to each, follow and engage, and finally coordinate like a human to book sales calls. Businesses using Alisha get 3 key benefits: 1.⁠ ⁠They get 12x output from your existing sales team. 2.⁠ ⁠⁠Are able to scale to 8 figure revenues with just a single AE. Alisha is built on our proprietary function calling model ThorV2 (https://floworks.ai/research) that outperforms both Claude 3 and GPT-4 function calling in accuracy by 13% and 43% respectively. At the same time, ThorV2 uses only a fraction of the cost (<40%) and time/latency (<78%) as the other models. Our second AI employee, Ashley, is an AI Executive Assistant that keeps you reminded and on top of your on your schedule. Works on your whim- just command Flowy to book a meeting, move a meeting or write a email, and it does without you having to navigate through every apps. You can teach Flowy specific workflows such as ‘inform me immediately if i receive a reply from xyz’, “show my unread emails from last day every morning 7am” and much more Our third AI employee, Romona is a helpful AI Revenue Operations Manager that keeps track of every CRM data updation on behalf of your team, works on your instruction to update notes, next steps, MEDDIC after every call, does periodic CRM reporting and much more.

Coldreach helps sales teams find ready-to-buy leads, by monitoring public signals *custom* to your product. For example, it can find who's hiring their first accountant, so an accounting automation product can hit them with a targeted message at the right time. Public data sources (job postings, news articles, 10-k reports, etc.) tell a lot about a company’s priorities and the problems it faces. We train AI sales agents to monitor them and find who needs your help and why. Sales teams know who'd thank them for a cold email/call now, and can sound relevant without hrs of manual research. Typically, targeted outreach yields 2-8x higher booking rate compared to random outreach. **Example intent signals we track**: - Bookkeeping automation product: Monitor who starts to hire human to manually enter invoices - Compliance product: Monitor who recently onboarded a new Compliance Analyst - CRM integrations: Monitor who starts to hire engineers experienced in Salesforce API.

rift is a sales platform that helps salespeople focus on what they do best – selling. On rift, you can accomplish everything you have to do to close deals - send emails, run sequences, cold call, and book meetings. The difference is that rift automates everything in between. If your data is a bit messy - we’ll clean it for you. If it takes a long time to figure out who to reach out to - our platform will flag the most likely leads to engage. If your emails are landing in spam - rift will set up the infrastructure to make sure that you're not landing in spam because of incorrect setup. Sales teams today spend 70% of their time not selling. rift’s mission is to give that time back to them so they can focus on selling again.

Avina uses AI agents to find prospects that are ready to buy, surface the warmest ones to your team and automate outreach to the rest. Compare us to tools like Unify or Common Room.

Automating call center operations at debt settlement companies, with AI that plugs into CRM, identifies debts to settle, and negotiates with creditors over the phone.

Hindsight's AI helps teams understand why they win or lose deals - and use that insight to win more. Our platform is used by teams like Ironclad, LaunchDarkly, and Klaviyo to build workflows on top of their GTM data. 1. Build battlecards, objection handling guides, and case studies that never go out of date 2. Create AI roleplays based on real conversations your sales team is having 3. Analyze 1000s of deals to create reports and alerts for your GTM, product, and strategy teams.

The cloud marketplaces on AWS, Azure, and GCP have become the App Store for B2B software products. It’s growing close to 100% year-over-year since it gives software sellers access to cloud budgets and makes procurement 40% faster. The core problem is the cloud marketplace is hard to navigate and requires an upfront technical investment without knowing the expected ROI. Suger eliminates the need to reinvent the wheel with your own engineering resource or spend a fortune on consulting-based solutions.

Common Paper is a contracting platform that helps startups close deals with their customers faster and with less risk. We create standard, open-source contracts for commercial transactions, including NDAs, DPAs, and sales agreements. These are analogous to the SAFE, but are between customers and vendors rather than investors and startups. The standardized format means that data within contracts is structured from inception. We build software for managing standard contracts, accelerating sales cycles, and making the data within the contracts programmatically accessible to other business systems. Tens of thousands of people have downloaded our standard contracts, and 63% of the contracts on our system close within 24 hours.

Fabius helps sales leaders understand and improve their reps' performance by analyzing customer calls with AI. Companies like Airbyte and Fermat use us to score every call and identify when a customer hasn’t been properly qualified. Fabius helps drive decisions within sales, including: - Disqualify a deal: Reps work on deals that will never close. We identify the deals that won't be successful and make sure reps don't waste time on them. - Need to strengthen the business case for a deal: We tell managers and reps when a deal has a weak business case and show them how to uncover more business value in the deal.