Discover the next generation of startups.

Cortex AI

YCombinator

Large-scale real-world robot & human data for embodied AI

Cortex AI builds the world’s most diverse and large-scale real-world workplace robot & egocentric dataset — where the physical world becomes the next training and evaluation set for embodied AI. We power frontier labs developing robotics foundation models and general-purpose robots by providing the data they need: 1️⃣ Egocentric Data — real-workplace human video with hand/body pose, depth, and subtask labels. 2️⃣ Robot Data — trajectories collected from manipulators and humanoids in real industry settings. 3️⃣ Human-in-the-Loop Rollouts & Evals — real-world deployments with remote operators who recover robots when they fail, capturing data that feeds back into training and continuously improves models. Additionally, through the Cortex Marketplace, workplaces get paid to host data-collection and evaluation sessions, while labs access the in-the-wild data that truly matters. This draws on Lucas’s previous experience as co-founder of Carousell, a C2C marketplace that scaled to a $1B+ valuation.

Corvera

YCombinator

The context layer for AI-native CPG brands

Corvera (YC W26) is the context layer for AI-native CPG brands. We help brands unlock the full potential of AI by making their unified data legible to any AI tool via MCP. As of mid-March 2026, we scaled from $0 to $33k in MRR in 4 weeks, are serving 12 brands, and are growing 130% week-on-week. With Corvera in place, brands can enable anyone in their organization to: - Rapidly deploy AI agents via tools such as Claude and ChatGPT, - Build dashboards and apps using Cursor and Lovable, and - Automate workflows across the entire business, from category management to supply chain. All in a secure, audit-logged, and access-controlled environment, without the need for a team of data engineers or AI specialists, in a simple plug-and-play solution. We're founded by Chris (2x Founder; ex-CEO at Better Nature; Forbes 30U30), Dirk (ex-Google Data & AI Lead), and Matthew (ex-Head of Product at Rosemark; Princeton MEng in CS). To-date, we’ve raised $6.2M and are backed by YC, firstminute capital, 6 Degrees Capital, 20VC, Rebel Fund, Duke Capital Partners, and more. Our ICP are omnichannel retail-focused CPG brands at the $100M+ revenue inflection point. Our mission is bold: to enable the next generation of unicorn CPG brands to be run by teams of less than 10 people. Our vision is even bolder: to be the system of intelligence for the $5.4T global CPG industry. Visit www.corvera.ai to learn more!

Cosmic Robotics

YCombinator

Autonomous construction on Earth and beyond

Our mission is to build a city on Mars. Cosmic-1, the first equipment in our fleet, is an autonomous robot capable of heavy-lift manipulation. Its been deployed on some of the largest solar farms in the US, more than doubling labor productivity across tens of thousands of panel installs. We're scaling in solar, expanding in data centers, and building lunar construction robotics under contract with NASA.

Cova

YCombinator

AI-Native Home Care Agency

Cova is an AI-native home care agency, licensed in Michigan. We serve Medicaid, LTCI, and private-pay patients; we pay caregivers the highest base rate in the state; and we help unpaid family caregivers get paid through programs they didn't know they qualified for. Our entire operation runs on AI agents, which means less overhead and more value passed directly to the people doing the real work.

Cranston AI

YCombinator

AI Tax prep and accounting software for CPA firms

Cranston is AI tax prep and bookkeeping for CPA firms. Our tax agents prepare returns the way a strong staff accountant would: they read the source documents, work the return in your tax software, and hand your reviewer a return that holds up, with workpapers attached. Our bookkeeping agents keep client books current all year, so tax season starts from clean numbers instead of cleanup. Prep and books are the start. We're building Cranston into the system a firm runs on: the place where prep, review, client requests, and the rest of the practice get done.

Cratejoy

YCombinator

Cratejoy is the platform for subscriptions

Cratejoy is the only all-in-one subscription box solution to help you launch, grow and scale your company. We provide the leading subscription box platform that allows you to launch and grow your business faster and more efficiently - no coding or plug-ins required. We support over 2,500 companies on our platform and over 1 million subscribers on the Cratejoy Marketplace. Founded in 2014, Cratejoy is headquartered in Austin, TX

Crosslayer Labs

YCombinator

Protect, monitor and defend your Internet presence

Crosslayer Labs detects impersonation attacks on websites and APIs. We provide "outside-in" monitoring of customer infrastructure, comprehensively discovering and monitoring all Internet dependencies, including DNS, BGP, TLS certs, Javascript. We correlate signals from different layers of the Internet stack to identify attack patterns. Our alerts are actionable and contain root cause analysis/remediation recommendations. Our founding team is world renowned for previously inventing the MPIC standard adopted by all the major CAs including Google, Apple, Amazon. The MPIC standard is securing over 700 million websites via the issuance of over 3 billion digital certificates, and is now a global internet standard that protects every single HTTPS connection.

Cruise

YCombinator

Self-driving cars.

Cruise is building the world’s most advanced, all-electric, self-driving car technology to safely connect people with the places, things, and experiences they care about. Self-driving cars will help save lives, reimagine cities, redefine time in transit, and restore freedom of movement for individuals who live in dense urban settings. Acquired by GM in 2016.

Cumulus Labs

YCombinator

The Fastest Multimodal Inference OS

Cumulus Labs lets engineering teams ship AI in production without needing a dedicated ML platform team. Right now, companies building AI products are forced to stitch together separate vendors for routing, observability, evaluation, fine-tuning, and inference. This fragmented approach is brittle, expensive, and is a common reason enterprises fail with AI. We replace that entire stack with a single unified platform. Developers can keep their existing code while instantly upgrading to a unified platform that handles routing, semantic caching, continuous shadow evaluation, simulated data, and one-click fine-tuning. Behind the platform is Ion, our proprietary inference engine running on a custom NVIDIA Grace GPU fleet. Ion uses in-house custom GPU kernels to deliver 30 to 50 percent more throughput than standard vLLM or SGLang, giving our customers SOTA inference economics.