Y Combinator (YC)

Greptile builds an AI code-review and validation platform that checks software changes against the context of a team’s codebase.

Open-source AI models and the Hermes agent, which retains project memory and reusable skills across tasks.

Training environments and benchmarks that measure how AI agents perform financial services work.

ByteAsk develops AI coding agents for engineers working on C and C++ software in demanding industrial and technical environments.

A web-data API that turns websites into structured data for developers building AI applications and agents.

Spott provides recruitment agencies with an applicant-tracking and customer-relationship system for candidate search, outreach and hiring workflows.

A monitoring and reliability platform that detects failures in production AI agents, investigates their causes and helps developers prevent repeats.

A health-insurance carrier and digital benefits platform that helps employers offer group plans and supports members in using their coverage and care.

AI agents for banks and lenders that automate routine lending and loan-servicing work across existing systems.

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

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.

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

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.

Builds precision strike and counter-UAS systems for allied militaries

Deploys AI agents automating enterprise operations across voice, email and documents

Relationship intelligence platform for enterprise revenue teams

AI platform automating back-office knowledge work for commercial real estate teams

Intelligent email inbox that prepares work proactively

AI startup automating customer-facing operations with AI agents

Automates the financial infrastructure of American healthcare

AI software creation platform for building full-stack, production-ready web and mobile applications

Bunkerhill Health builds an agentic AI platform for health systems to turn their ideas into reality