Conversational AI Startups funded by Y Combinator (YC) 2025

The universal AI front desk for healthcare: plugs into any practice management system (cloud-based or on-premise) and automates all patient workflows: scheduling, cancellations, payment plans, insurance checks, reminders, intake, and follow-ups.

We build brains for robots. We work with manufacturers like Unitree to make robots listen, speak, and act. You can program your robot out of the box by literally talking to it, no coding involved. Robots running Lightberry are emotionally intelligent, always on, and fully autonomous. Just like in Star Wars!

€5,000 in additional bookings. In 4 weeks. For a 53-room hotel. We help hotel groups turn missed calls into bookings. This it how it works: - They send their missed calls to us. - Our AI answers and takes the booking. - The booking goes right into their PMS. Even with call centers and central reservation departments they are still losing 5% of calls. That is a seven figure revenue leak. Why us? We used to build software that can’t fail for massive companies. We started Codyco after a friend told us how much money he was losing from missed calls. We built the first version just for him. Now we give hotel groups the reliable AI they need, so they never lose a booking on the phone again.

AirCaps is bringing AI assistance to in-person conversations. Our AI-copilot provides live captions, translations, AI meeting notes and insights for in-person conversations in real-time. It's deployed as an app for lightweight AR glasses so you can see visual information overlaid onto your field of vision. You can think of it like a Zoom AI meeting assistant or Granola, but for in-person conversations, and with the ability to proactively help you in real-time, not just after the conversation. We’re building the capture and intelligence layer for the 216 billion daily conversations that happen face-to-face. We’ve already processed 16,500 hours of real-world conversations and counting. Today, AirCaps assists with 11% of our users’ in-person conversations. We did $93K in revenue in October and grew 6.5x from September while spending <$3K on marketing (and hit $70K in revenue in the first 2 weeks of November). Our power users average 6h+ daily usage and our day-30 retention is 91%. We previously went viral (75M+ views on TikTok, 150K+ followers) and have been featured by The New Yorker, WIRED, and Forbes. Madhav (CEO, Yale CS) has been building in audio and AR since age 13, starting with Google Glass apps and voice assistants for Raspberry Pis. He researched audio AI at the MIT Media Lab. Nirbhay (CTO, Cornell CS) built voice AI on smart glasses in high school and built conversational AI products as the first engineer at 2 YC startups.

Bolna handles the complexity of voice infra, so enterprises can automate calls faster, better, and cheaper, at scale Bolna is a Voice AI Orchestration platform purpose-built for Indian enterprises. Businesses in India run tens of thousands of calls every day - across sales, support, collections, recruitment, and more. Bolna gives them the power to build and deploy Voice AI Agents directly from their transcripts and FAQs, so they can start automating calls immediately. With Bolna, enterprises get: 1. Full control over agent intelligence, tone, and workflows 2. Cost efficiency at scale with smart routing across providers and price points 3. Enterprise-grade performance on latency, interruptions, multi-language, and multi-accent understanding

Qualify.bot helps commercial lenders and loan brokers process business loan applications with 4x higher conversion rates. Our AI voice calls eliminates 8+ hours of manual work per loan, from lead qualification to document collection & follow-ups.

Okibi is a web app that lets you create AI coworkers using natural language. It's like Lovable for creating AI agents that talk to your internal software Corporate users lose 2 hours every day doing tasks that can be automated with agents But existing agent builders have janky drag and drop UIs that don’t map to what they want exactiy. Okibi lets everyone use natural language to build the exact agent they want.

Phases uses AI to automate clinical trial operations, starting with patient recruitment. Our agent scans medical records and conducts human-like voice interviews to assess patient eligibility for clinical trials. Our vision is to run the entire clinical trial back-office with agents, getting drugs to market at a fraction of the time and cost it takes today.

Humoniq is building the first AI-Native BPO for the travel & transport industries, which outsource $20B of customer support each year. Our AI-native approach improves speed, accuracy, and satisfaction. Our team is uniquely equipped to solve this challenge. We previously grew a travel management company, Flightfox (YC S12), to $22M/yr. We handled thousands of customer requests each month, which exposed the limitations of traditional outsourcing.

We build Voice Models for regional languages (like Urdu, Bengali, Greek etc) and make them available through simple APIs and SDKs. Developers use us to create Voice-first digital experiences (eg. Voice eCommerce, Voice Banking, Voice AI Tutors etc). We gather our own data, develop our own labelling tools, train our own models, and design our own voice infra. This fully integrated approach enables us to offer the best models and the best developer experience for regional languages. --- People who would previously never use certain digital services (like online ordering), actually use the service when they are given an intuitive Voice based interface. We believe that Voice Interfaces will onboard 100s of millions of new users onto digital services; and double the addressable market for technology companies. Uplift AI will provide the best models to create these Voice Interfaces for 60% of the world's population that only speaks their regional language and represents 42 trillion dollars in GDP.

Stratify is the AI-powered user researcher that discovers the why behind every decision, click, and preference. Our platform uses agentic workflows that instantly recruit participants, conduct user interviews, analyze responses, and provide actionable insights.

Dollyglot is like Character.ai but with real time video avatars. Turn a photo and a voice into a real friend. Speak with Harry Potter about Hogwarts or brainstorm ideas with Elon Musk!

careCycle is an AI workforce for medicare agencies and FMOs - helping leading agencies achieve 5x higher conversions, 37% better retention, and saving thousands of agent hours. We're transforming how Medicare agencies handle member relationships with teams of voice AI agents. We're solving the industry's biggest challenge: 50% annual member churn caused by poor post-enrollment engagement. Our multi-agent AI teams work together to handle the entire customer journey - from initial contact through enrollment and ongoing care. When a lead comes in after hours, one AI agent answers and schedules a callback, another calls at the perfect time, a third captures qualifying information, and a fourth handles the warm transfer to a licensed agent. This approach helped a leading FMO write over $2M in renewals during AEP 2024 while reducing agent talk time by 20% per sale. We've pioneered a purpose-built solution for Medicare's unique compliance requirements. Unlike generic AI platforms, our system features built-in HIPAA/CMS compliance, real-time data structuring, and seamless CRM integration. This enables agencies of all sizes to deliver enterprise-grade member care without massive infrastructure investments. Early metrics show the power of our approach: - 5x increase in after-hours conversion rates - 37% improvement in 90-day retention - 3,000+ agent hours saved in a single AEP - $2M+ in additional renewals during AEP 2024 The Medicare Advantage market represents a massive opportunity, with over $360B in annual premiums and growing 10% year over year. By solving the member retention challenge, we're positioning ourselves to capture significant value by transforming the member care experience for beneficiaries.

NextByte’s AI recruiter helps you identify top candidates faster, so your team can focus on what matters – building your product and hiring the best talent. Our platform understands the requirements for each role and tailors voice-driven technical and non-technical evaluations to surface candidates who are ready for your next onsite interview. NextByte can screen hundreds of candidates simultaneously and provides rubric-based, detailed evaluations in minutes. Our analytics dashboards provide a clear view of technical ability, problem-solving skills, and communication under pressure across your candidate pool, so you can confidently move the right candidates forward. With NextByte, hiring teams save time, reduce bias, and make faster, data-driven hiring decisions without sacrificing quality.

Roark helps teams test, monitor, and improve their voice agents. Voice AI is exploding, but reliability is still the #1 challenge. Teams spend hours manually testing agents and still miss failures. In the last 6 months, Roark has processed over 10M minutes of calls, powering monitoring and simulation for teams across the Voice AI ecosystem (including YC companies). We close that gap by combining: 📊 Monitoring & Evaluation - 40+ built-in metrics (latency, instruction-follow, sentiment, etc.), custom dashboards, alerts, and the ability to define your own. Up to 15 speakers with automatic speaker identification. 🎭 Simulations & Personas - end-to-end phone/WebSocket simulations for inbound and outbound agents, with configurable personas (accents, languages, speech & behavior profiles). Define tests as conversations with a graph-based approach, so you can easily branch into edge cases and variants. 🔁 Full lifecycle loop - failed calls automatically become repeatable tests, so every failure makes your agent stronger. Roark is the missing QA layer for Voice AI - helping teams ship agents they can trust.

Leaping AI is the best platform to deploy voice AI agents for customer service, lead qualification and appointment scheduling. We target mid-market and Enterprise companies and industries are: home services, pay per call, travel, retail, health insurance, Medicare, health and real estate. We automated contact centers employing >100 human agents and now handle their incoming customer support and sales calls, end-to-end. All while maintaining 90% customer satisfaction score. For another company, our voice AI agents were able to convert 30% of contacted leads within a week of the outbound campaign. A similar campaign with humans previously took that same company 5 weeks.

Caseflood.ai helps law firms cut costs by a third and increase average case value by 20% by replacing their entire admin/operations staff with AI agents. It takes care of all admin tasks - from client intake to case analysis to engaging clients - allowing for firms to be run more profitably and wildly more efficient. Caseflood.ai is on a mission to fundamentally change the unit economics of the legal industry.

We’re Toothy.ai. We’re building AI agents for dental practices that handle everything related to patient insurance. The average dental clinic spends over 160 hours a month on insurance tasks like verifying patient policies, billing, and claims processing. Our AI agents automate this entire workflow—including making insurance calls with voice AI—saving clinics time, reducing costs, and ensuring faster reimbursements.

currently in stealth Reach out to us at founders@focusbuddy.ai Our previous product - Focus buddy is an AI productivity coach that stays on calls with you and help you accomplish your important work goals on a daily basis, even when you are struggling to focus. We noticed that our users develop a productive relationship with Focus Buddy. Users stay on calls for multiple hours everyday where they depend on Focus Buddy to: • Avoid procrastination and get started: Address hidden anxieties, embrace imperfection, chunk tasks, kickstart with mini-goals, and use regular check-ins to maintain momentum. • Recover from distractions and stay focused: Focus Buddy detects when they are working on less important tasks or scrolling on social media, help them overcome the underlying concerns feeding the distraction, and help them get back to the important task • Manage stress and Prevent Burnout: Focus Buddy detects stress buildup, integrates mindfulness habits to the workflow, helps take short rejuvenating breaks, and stay composed. Our Initial ICP is people with ADHD who are highly motivated but also highly blocked by internal and environmental factors. In the future, we believe each worker should have their own personal coach that enforces proven productivity techniques in real time to help them extract more focused hours every day with the same effort.

A Cursor-like AI-assisted, no-code IDE for building production-ready multi-agents. ✨ Start from a simple prompt to create fully functional agents with the Copilot 🧪 Test them in AI-simulated scenarios 🌐 Connect MCP servers and tools 📞 Interact through the Python SDK, a web widget, or a Twilio phone number ♻️ Continuously refine your agents by providing feedback to the Copilot Built on OpenAI's Agents SDK, Rowboat is the fastest way to build multi-agents!

A personal AI that can act on direct commands and run persistent directives for you, via voice and text.

Conveo powers your qualitative research from start to finish, all in one platform. Your AI co-worker designs expert research studies, interviews real people and instantly analyzes your videos. Get robust, actionable insights of consumers, users and audiences at scale. Tell powerful stories to your stakeholders within days.

Ego AI is building Character AI + Roblox. Our conviction is that 3D embodiment, shared activities in games and AI imbued with human-like personalities will solve the existing problems of low-stakes, shallow and generic interactions that impact retention in consumer AI chat experiences.   We’re fine-tuning a foundation model for characters to behave in human-like ways—indistinguishable from real people—and building a UGC platform around it to allow users to create, experience and form meaningful connections & mutual stories with these AI characters. On our platform, simworld, users will be able place the characters in a Stardew Valley style simulated town, where the AI characters will live, work and play, leading rich internal lives. Users who deepen bonds with these AI character friends can invite them out with them to Discord, Minecraft or even a Netflix-n-chill session. Our Character engine, ego AI, built on top of Unreal, will allow users to create, deploy and even monetize their characters across any surface that supports our CCProtocol. The first use case for our characters will likely be DnD-style roleplay, Minecraft RP, and Twitch streaming. Characters will always live and exist in Simtowns with other AIs (and humans) where they will all lead varied internal lives replete with conflict, danger, opportunity, and love…just like humans in the real world! During YC, we used our engine to build TownWorld - a 3D interactive Twitch live stream of the Stanford generative agents paper (https://www.twitch.tv/townworld). To the best of our knowledge, it's the first ever AI 3D simulation of a small town in real time YC Launch - https://www.ycombinator.com/launches/KeD-ego-an-ai-native-3d-simulation-engine-getting-us-closer-to-the-matrix-one-pixel-at-a-time Demo video: https://docsend.com/view/mzf6i7kiwkkgg669 AI 3D TownWorld video: https://docsend.com/view/ig6t2shuz26z7wha

Marr Labs is making AI-voice agents that are indistinguishable from humans. Han and Dave previously created speech tech company Vlingo that powered the first Siri app and was acquired for $225M. Now they are taking voice to the next level by making AI-voice agents that can handle virtually any phone-based job, from answering calls to schedule appointments to call center sales and support jobs—all at a fraction of the cost of a human agent. In the US alone, businesses handle 17 billion calls a year at an average cost of $5 per call–an $85 billion addressable market.

Build fast, accurate, and personalized agents with the only platform that systematically engineers relevant context from chat history and business data. Skip building complex personalization infrastructure, focus on your product instead. Zep includes three core components: - Agent Memory - Transforms conversations, business data, & user interactions into a living knowledge graph that evolves with every interaction - Graph RAG - Connects your business data through relationships so agents retrieve relevant information in milliseconds, even as your data changes - Context Assembly - Combines memory and business data into optimized context for your LLM What you get: - Personalized Context Engineering - 100%+ accuracy improvements through temporal knowledge graphs that combine user memory with business data - Rapid Implementation - Deploy personalized agents in days using simple APIs, not months of infrastructure work - Enterprise-Ready Performance - 90% latency reduction with 98% token efficiency, plus SOC2 Type 2 and HIPAA compliance - Universal Integration - TypeScript, Python, and Go SDKs work with any LLM and framework including LangChain

OneGrep is a DevOps Agent that helps engineers automate manual devops tasks. It works across integrations that teams have to search, correlate, and operate automated tasks like runbook automation during incidents. OneGrep specializes across devops tools to help teams release code faster and more reliably so that engineers can spend more time building rather than being trained in bespoke tools like Observability, Ci/Cd, or Infra. Achintya and Brian are technical co-founders who have deep domain expertise in building and operating systems at scale at Coinbase, Disney, and Amazon. Achintya led the Search Team at Disney enabling DisneyPlus to scale to 70M users in two weeks. Brian was a founding engineer on the team that built the Incident Management Platform at Amazon that helps 30k DAUs in Amazon resolve critical incidents every day. https://www.onegrep.dev

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.

Pernell is your AI-powered second phone that records, transcribes, and summarizes calls. When you’re busy, an AI receptionist answers for you - no more missed calls.

At Toma, we are building the AI software suite for underserved industries, starting with Automotive. We started as a voice AI infrastructure company and still are our own biggest customer to this day. Our product empowers hundreds of businesses with a world-class AI receptionist and customer support platform. Toma’s AI agents engage in thousands of customer interactions every day and generate millions of dollars worth of revenue. Why Automotive first? It is a sleeping giant contributing trillions of dollars to the GDP. The industry and its processes are ready for disruption. Toma is bringing AI to all operations in the industry while working hand-in-hand with some of the biggest names, such as the Car Dealership Guy, and public companies like Lithia Motors and AutoNatio. Toma is backed by the best investors in Silicon Valley, including Andreessen Horowitz and Y Combinator.

Open is an AI-powered, all-in-one customer support and communication platform — used in production by: Print.com, Mollie.com, Viva.com, More.com, Orderchamp.com, OneCarNow.com, and other major enterprise companies. We specialize in solving and automating complex support cases across email, web, phone, SMS, and WhatsApp. We’re a research-based company currently working on releasing Support-Bench, the world’s most comprehensive AI customer support benchmark. Our team consists of +3 programming language builders, a nationwide cybersecurity competition winner at age 16, and a dentist.

Surface Labs helps B2B companies capture, qualify, and convert inbound leads through intelligent contact forms. We replace tools like HubSpot Forms, Zapier, and Chili Piper with a single platform that embeds on any site with one line of code. Our AI agents handle lead capture, enrichment, routing, follow-up, and CRO testing — automating what used to require full marketing ops teams. Customers see a 30% lift in conversions in under 2 weeks, and our partial response capture feature collects 50% more emails from form drop-offs.

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.

kapa.ai makes it easy for technical companies to build AI support and onboarding bots for their users. Teams at +150 leading startups and enterprises incl. OpenAI, Mixpanel, Mapbox, Docker, Next.js and Prisma use kapa to level up their developer experience and reduce support. We enable companies to use their existing technical knowledge sources incl. docs, tutorials, chat logs, and GitHub issues to generate AI bots that answers developer questions automatically. More than 750k developers have access to kapa.ai via website widgets, Slack/Discord bots, API integrations, or via Zendesk.

Open source voice AI. Check out our docs for more information: https://docs.vocode.dev

## What is Yuma AI? Yuma is automating customer support by providing an AI Support Agent orchestration platform. Yuma provides autonomous AI agents dedicated to customer service and e-commerce. We integrate directly with help desk software (Zendesk, Kustomer, Gorgias, etc.) and focus on helping large Shopify brands deal with their high volume of support requests. Top merchants using Yuma can automate up to 80% of their support tickets fully autonomously. ## Why do Shopify merchants need Yuma? There are thousands of large Shopify merchants around the world generating $10M+ a year. Most of them have taken over some niches and are great at what they do: selling their products. But they all have one thing in common: they all hate customer support. It's a burden for them and a huge source of cost, as they receive hundreds of requests per day. Some of them have dozens of support agents on staff, usually offshore, and the overall quality is still often pretty poor while staff turnover remains high. Those merchants have been promised automation for years but have always been disappointed by the outcome. As customers, we have all had to live through a terrible support automation experience before, so this is no secret, and everyone knows that the current state of the technology is quite bad. ## Yuma is solving this in a few ways: Yuma isn't just another RAG chatbot. Our platform provides autonomous AI agents dedicated to support and ecommerce. These agents are powered by knowledge, follow processes, and are managed by our in-house AI orchestration technology. This ensures safety, control, and quality at every step. We believe that to truly automate customer support, we must develop a platform that mimics the actions of a human support agent. That's exactly what we've been doing. Currently, our top merchants are automating 60% of their support tickets through Yuma. Yuma can fetch information from external services and take actions in other apps as needed to resolve each ticket. We are laser-focused on building the best AI support agent platform and aim to achieve 80% true automation in the next few months. ## Fun Fact Yuma got started by accident. This is my third YC startup after Socialcam (W12) and Triplebyte (S15). I released Yuma as a prototype for fun in mid-December 2022 and was overwhelmed with demo requests. That's when I knew I was onto something and had to turn this into a real company, once again.

Berry offers an AI CSM that scales customer success for SaaS companies. Every post-sales organization faces the challenge of scaling customer success without having to hire more. Berry combines the best of the two worlds - taking the white-glove onboarding experience and offering it at scale. Our AI CSM onboards, trains and grows accounts for you non-stop. It’s a 10x hire to your team - at a fraction of the cost.

Supadock builds AI workers for logistics operations. In freight, every call, document, and signature exists to prove diligence — not just save time. Check calls, proof-of-delivery reconciliations, ID verification, and invoice audits all ensure compliance, reduce liability, and protect margins. Supadock automates these high-accountability workflows while ensuring accuracy, compliance, and risk reduction. Our AI agents use cameras, voice, email, and document processing to handle tasks like verifying driver IDs, coordinating warehouse entry, assigning shipments to carriers, checking freight status, reconciling pickup and delivery paperwork, and following up on late invoices.

Launched in February 2021, Jasper is an AI content platform that helps creators and companies of all types expand their creative potential. Over 105,000 active customers are using Jasper to break through writer’s block, repackage their content, create original art, and adjust writing for language and tone. The interest in AI continues to grow and we are at the forefront of teaching the world how to leverage artificial intelligence as a creative partner. We are building teams that will pioneer the content generations space even further.

Cozmo AI is building the foundational infrastructure for real-time, low-latency voice automation for regulated enterprises. We enable Fortune 500 and leading insurers to deploy AI Employees that can speak, think, and act across revenue-critical workflows. In one global deployment, our voice-native AI employees managed all inbound and outbound policy calls with zero wait time and full compliance. The verified AI performance not only improved service speed but also surfaced new, qualified leads creating what we call the “efficiency loop,” where AI handles repeatable tasks while humans capture higher-value opportunities. Each interaction is governed and auditable through our Agent Protocol Engine (APE™), which provides a transparent trail showing what the AI did, why it did it, and what business outcome it achieved. In industries like insurance, where trust and traceability matter more than speed, verified outcomes have become the new competitive edge. Cozmo AI also supports with foundational voice and agentic infrastructure built for regulated, multilingual markets: •⁠ ⁠Arabic + English first agents with Gulf dialect understanding. 97+ other languages supported •⁠ ⁠Sub-1.5 second latency across telephony. •⁠ ⁠Compliance-ready for local sovereignty laws. •⁠ ⁠APE Memory Engine for contextual, traceable reasoning. •⁠ ⁠Forward-Deployed Implementation Pods that integrate AI employees directly into live operations. Backed by YCombinator, Dubai Future District Fund and other global VCs we have headquarters in San Francisco and EMEA HQ in Dubai.

Backed by Y Combinator, Zoom and Atlassian, Spinach AI is the system of record for conversation data, transforming unstructured dialogue into a structured data asset leveraged across the enterprise by people, agents and LLMs. We enable the Record-by-Default Enterprise!

Quickchat AI empowers companies to build their own Multilingual AI Assistants powered by generative AI models such as GPT. Thanks to our powerful integrations and API they can add the power of conversational AI to any website, product, app, game or smart device. Backed by Y Combinator and other notable investors.

Luka is a software development company based in San Francisco, California. The company created Luka app, a new messenger with AI-powered chatbots. They help you find places to eat, do web search, make plans together, pick places to eat, play trivia games and lots of other things in a messenger. In 2016 Luka launched a closed testing of Replika, a new app that allows to create a personal AI friend that helps people deal with loneliness. The app is powered by a proprietary deep learning architecture.

Truva handles the busywork intelligently saving your sales team hours each week, so they can focus on what matters most - building and closing deals. Many teams have seen up to 25% increase in sales where Truva's AI agents automated tedious tasks such as email follow up, CRM data entry, and process optimizations.