Y Combinator (YC)

AI video-creation software that helps creators, businesses and teams turn briefs or source media into editable, localized videos.

Blee gives legal, compliance and marketing teams an AI-assisted system to review promotional content against their rules before publication and monitor websites, social media and partner channels afterward.

Stoke Space develops Nova rockets with reusable first and second stages for commercial and government launch customers.

An AI fundraising workspace that helps founders identify investors, research firms and manage venture rounds.

Sirdab connects businesses with warehouse and transport capacity across Saudi Arabia and the GCC, while helping providers and shippers coordinate inventory, orders and service quality.

ZeitMind connects mid-sized companies' ERP, CRM, HR and other systems, prepares their data and turns plain-language business questions into traceable reports, dashboards and applications.

Wafer runs AI inference infrastructure that adapts a model-serving stack to each customer's workload. It benchmarks and tunes models, engines, kernels and available hardware together, then keeps optimizing live serving for latency, reliability and cost as traffic changes.

An AI-led consumer research platform that conducts video interviews and turns responses into searchable insight for product, marketing and strategy teams.

Kalinda uses AI to help plaintiff-side class action and mass tort firms review case information and qualify potential claims.

An AI actuarial platform that helps companies model and manage risks retained through their own insurance captives.

Open-source healthcare data infrastructure unifying patient records for clinicians

AI platform automating medical coding and revenue assurance for health systems

Builds AI agent harnesses for asset managers' proprietary research and data

Pluggy provides banking-data and payment APIs that help software companies embed financial services into their products.

Foundation models for understanding, designing and controlling hardware and physical systems.

Adaptyv Bio runs automated laboratory experiments that help protein designers test their sequences and use measured results to improve the next design.

AI software that extracts and verifies financial documents to help lenders assess borrowers.

Apollo Atomics develops compact pressurized-water reactors designed for factory manufacturing.

Thunder Compute virtualizes GPUs so multiple workloads can share capacity and data centers can use existing hardware more efficiently.

AI agents that map, document and modernize legacy COBOL applications.

A machine-native browser engine that turns websites into structured workflows AI agents can execute.

Gamgee develops personalized mRNA vaccines for dogs with cancer, designed from the genetic profile of each dog’s tumor.

Rasyn gives chemists a chat interface to run real chemistry software tools on their own hardware.

Lemma monitors AI agents in production and surfaces semantic failures that ordinary system metrics can miss.

Cloud infrastructure for building and testing software through continuous integration workflows.

Builds infrastructure for training and serving personally trainable AI agents

AI-native clearinghouse automating insurance verification and policy workflows

Builds AI agents that discover and accelerate new materials for semiconductor chips

Naïve provides the accounts, tools and runtime infrastructure that AI agents need to operate business workflows.

AI agents that gather property records, prepare real estate contracts and track transactions to closing.