Each Y Combinator batch offers a snapshot of how new companies think, build, and show up in the world. The Fall 2025 US group is no different, revealing the early decisions founders make as they move from idea to something real.
One of those early decisions often shows up in naming. Young teams lean into extensions such as .app, .io, or .ai because they are flexible, available, and close to the product’s first chapter. Growth changes that equation. Investor attention, bigger customers, and cross-market expansion usually bring renewed interest in Exact Brand Match (EBM) domain naming as a clearer signal of who the company is becoming.
This selection highlights a range of teams building across markets, with early choices and signals that hint at how they plan to grow.
item
Domain Name: item.app
Startup Market: Automation, AI assistant
Founded: 2024
Batch: Fall 2025
Item brings your customer tools into one place, enriches context automatically, and gives your team an assistant that handles daily tasks through simple prompts. You can also create agents for repeatable work, trained from your own process notes, so key workflows run on their own.
Rivet
Domain Name: rivet.design
Startup Market: Design, AI
Founded: 2025
Batch: Fall 2025
Rivet gives product designers a visual AI editor to make UI changes and ship them directly to the codebase, removing slow handoffs and letting designers turn their ideas into working product on their own.
Bear
Domain Name: usebear.ai
Startup Market: Generative AI, SaaS, B2B
Founded: 2025
Batch: Fall 2025
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.
Moss
Domain Name: usemoss.dev
Startup Market: AI, Developer tools, SaaS
Founded: 2024
Batch: Fall 2025
Moss provides a real-time semantic search runtime that gives conversational and multimodal AI the sub-10 ms retrieval needed to feel instant, letting voice agents and copilots respond naturally without lag. Its Rust and WebAssembly engine runs everywhere and keeps context close to the agent, enabling faster, more adaptive AI experiences that improve engagement and unlock new product possibilities.
Zarna
Domain Name: zarnaai.com
Startup Market: Investments, AI
Founded: 2025
Batch: Fall 2025
Zarna offers an AI associate layer for private equity, with agents that plug into firm data to analyze CIMs, build LBOs, update CRMs, and draft investment materials, so investors can spend less time in spreadsheets and more time on judgment and dealmaking.
MarkIt
Domain Name: markittrade.com
Startup Market: Workflow Automation, Logistics, Supply Chain, AI
Founded: 2025
Batch: Fall 2025
MarkIt builds AI agents that work inside the everyday tools of trade professionals, handling classification, audits, and record-keeping across Excel, PDFs, and broker portals, bringing reasoning and automation to global trade so teams reduce errors, save time, and manage compliance with far less friction.
Dome
Domain Name: domeapi.io
Startup Market: Developer tools, Fintech
Founded: 2025
Batch: Fall 2025
Dome provides the infrastructure developers need to build on prediction markets, offering a unified API for live and historical data across platforms and making it easy to trade, embed market insights, and deploy strategies through a single interface.
Clicks
Domain Name: goclicks.ai
Startup Market: Workflow Automation, Recruiting, Automation, AI
Founded: 2025
Batch: Fall 2025
Clicks automates back-office work using your existing tools and processes, with AI agents that run tasks like data entry, CRM updates, and reports based on workflows you define through a simple call or shared documentation, starting with recruiting teams that need faster candidate processing and less manual admin.
Velvet
Domain Name: velvet.video
Startup Market: B2B, Video, Media, Creator economy, AI
Founded: 2025
Batch: Fall 2025
Velvet is an all-in-one platform for creating AI-generated videos, built by a team with experience in video generation at Meta FAIR and Infrastructure at Adobe, giving companies a single tool for producing high-quality AI video assets.
Amera
Domain Name: amerahealthsolutions.com
Startup Market: Workflow Automation, Health Insurance, Healthcare IT
Founded: 2025
Batch: Fall 2025
Amera automates Health Insurance claims by turning messy PDFs, bills, receipts, and non-standard submissions into structured data that fits existing systems, reducing manual work and lowering processing costs for payers already serving around 100k members.
Forge Robotics
Domain Name: forge-robotics.com
Startup Market: Robotic Process Automation, Robotics, Industrial
Founded: 2025
Batch: Fall 2025
Forge Robotics is building an intelligent robotic system that fabricates metal parts end to end, starting with welding through a robot-mounted vision system and AI feature detection that maps the workpiece in real time and guides the arm with precision.
Stratus Aviation
Domain Name: getstratus.ai
Startup Market: Hardware, Aerospace, AI
Founded: 2025
Batch: Fall 2025
Stratus gives airports a unified real-time picture of airside activity by consolidating radio calls, movements, and sensor data into one intelligence layer, helping teams make faster decisions, improve safety, and run ground operations with far greater clarity and efficiency.
Bluma
Domain Name: getbluma.com
Startup Market: B2B, Social Media, Video, Marketing, AI
Founded: 2025
Batch: Fall 2025
Bluma is an AI engine for short-form content that automates consumer marketing by generating on-brand videos at scale, handling everything a growth team would script, produce, and edit while delivering UGC-style assets faster and at a fraction of the cost.
Miniswap
Domain Name: miniswap.gg
Startup Market: Marketplace, Consumer, Gaming
Founded: 2025
Batch: Fall 2025
Miniswap is a marketplace built for complex hobbies, starting with Warhammer, offering a structured catalogue of over 20,000 miniatures so sellers can list accurately and buyers can shop without the confusion, mislabeling, and counterfeits common on general marketplaces.
Rovi Health
Domain Name: rovi.health
Startup Market: Consumer Health Services, Health Tech, Digital Health, Healthcare, Health Insurance
Founded: 2025
Batch: Fall 2025
We provide text-based healthcare that lowers employer spend by 10–20 percent while giving employees concierge-level support, using AI agents that identify upcoming care needs, treat common conditions virtually, and route complex cases to the best in-network providers with full booking handled end to end.
Jarmin
Domain Name: jarmin.ai
Startup Market: AI, Developer tools, B2B, Enterprise, AI Assistant
Founded: 2025
Batch: Fall 2025
Jarmin.ai is a 24/7 ML engineering teammate you can talk to like any employee, capable of taking on full initiatives or individual tasks, built by a team with deep experience from Meta SuperIntelligence Labs, Apple, AWS, Lockheed Martin, and JPMorgan Chase.
Exonic
Domain Name: exonic.ai
Startup Market: AI, Synthetic Biology, Crowdsourcing, Drug Discovery, Biotechnology
Founded: 2025
Batch: Fall 2025
Exonic is creating an open, global network for drug discovery, turning what has traditionally been a closed, siloed process into an accessible AI-driven platform where anyone can combine leading biological models, build workflows without code, and contribute to solving real disease challenges, already validated through state-of-the-art results in their wet lab.
Lemma
Domain Name: uselemma.ai
Startup Market: AI, Developer tools, B2B, Infrastructure
Founded: 2025
Batch: Fall 2025
Lemma turns AI agents into self-improving systems by detecting performance drift, tracing failures to their source, generating better prompt candidates, and delivering updates automatically through API or pull request, helping teams ship more reliable agents with continuous performance gains.
Mantle
Domain Name: mantle.work
Startup Market: SaaS. Workflow Automation, Enterprise Software, AI
Founded: 2025
Batch: Fall 2025
Mantle connects to all your existing tools and lets you create agents with a single prompt that handle back-office work like reports, emails, and pre-meeting research, running quietly in the background or on schedule so your team can focus on the work that actually moves the company forward.
Karumi
Domain Name: karumi.ai
Startup Market: SaaS, B2B, Sales, AI
Founded: 2025
Batch: Fall 2025
Karumi is an AI agent that joins live video calls to deliver personalized product demos in any language, engaging prospects right when interest peaks and giving visitors an interactive path to explore even before they reach your sales team.
Icarus
Domain Name: icarus.one
Startup Market: Hardware, Swarm Robotics, Aerospace
Founded: 2023
Batch: Fall 2025
Icarus builds autonomous, solar-powered aircraft that cruise in the stratosphere for weeks, delivering persistent intelligence and connectivity at a fraction of traditional costs with fleets designed to be deployed by the thousands.
Sava
Domain Name: savahq.com
Startup Market: Fintech, AI
Founded: 2025
Batch: Fall 2025
Sava is building an agentic trust company that treats the trust charter as infrastructure, offering a Stripe-like dashboard to open, fund, and manage trusts while AI agents handle data collection, signatures, documents, reconciliation, and continuous compliance so fiduciaries can focus on higher-value decisions.
Denki
Domain Name: denki.ai
Startup Market: Finops, Compliance, AI
Founded: 2025
Batch: Fall 2025
Denki automates internal audit workflows by handling evidence collection, walkthroughs, testing, and documentation across existing systems like Auditboard, Workiva, and ERPs, delivering traceable workpapers and streamlined compliance for SOX programs and financial regulations.
Automax.ai
Domain Name: automax.ai
Startup Market: B2B, Proptech
Founded: 2025
Batch: Fall 2025
Automax.ai delivers faster, more transparent property appraisals by using LiDAR and computer vision to capture property details automatically, then combining that data with AI-driven analysis to produce a fully compliant appraisal report in minutes.
Primer
Domain Name: startprimer.com
Startup Market: AI, SaaS, Sales, Customer Support
Founded: 2025
Batch: Fall 2025
Primer is an AI agent that sells, onboards, and supports users automatically through live, personalized walkthroughs.
Narrative
Domain Name: narrative.video
Startup Market: Computational Storage, Video, Infrastructure, AI
Founded: 2025
Batch: Fall 2025
Narrative provides AI video-understanding infrastructure that lets language models process and interpret thousands of hours of video with the same ease as text.
Zalos
Domain Name: zalos.ai
Startup Market: AI, FinOps, Finance
Founded: 2025
Batch: Fall 2025
Zalos delivers automation with end-to-end encryption, full auditability, and strict data protection built in, giving teams the confidence to deploy AI securely.
Anto Biosciences
Domain Name: anto.bio
Startup Market: Generative AI, Biotech, Genomics, Drug Discovery, AI
Founded: 2025
Batch: Fall 2025
Anto is creating a foundation model for microbial communities that makes the gut microbiome computable, allowing teams to predict drug toxicity and efficacy across populations and redesign therapies to avoid failures rooted in microbiome interactions.
s2.dev
Domain Name: s2.dev
Startup Market: Developer Tools, API, Infrastructure, Databases
Founded: 2023
Batch: Fall 2025
S2 is a serverless datastore for real-time streaming data that brings the simplicity of object storage to durable streams, giving teams an easy way to persist context, broadcast fast-moving data, and coordinate agents without managing clusters.
Pixley AI
Domain Name: pixleyai.com
Startup Market: AI enhanced learning, AI, Generative AI
Founded: 2025
Batch: Fall 2025
Pixley is a platform that lets kids turn their drawings into animated cartoons within minutes, giving families a safe, personalized alternative to generic children’s content and laying the groundwork for a future where video entertainment is generated uniquely for every viewer.
If you feel your current name won’t carry you through the next phase, post a request and explore what a better fit could look like.