Y Combinator Portfolio Companies

Riverbank Security delivers autonomous AI‑driven penetration testing and offensive security, combining AI agents with expert red teamers.

Pharmie AI handles pharmacy administrative tasks, answering calls, managing insurance queries, and handling patient messaging.

Replacing forms with AI conversations

Nuntius is an IT Internet firm offering AI based automation platform for custom categories workflow.

Epicenter is an open-source, local-first ecosystem of apps that share a single memory stored in plain text and SQLite on the device.

Humoniq is an AI-based travel support platform providing customer support services for airlines and travel agencies.

The Interface is an IT and Media firm offering an AI based 3D simulation and modelling techniques for their clients.

Liva AI provides multimodal for AI.

Fluidize offers AI-powered SaaS for automating and managing scientific simulation workflows.

Wayline is an AI based real estate voice and text assistance for property managers.

Candytrail is an AI sales platform that automates lead generation, analyzes calls, and provides real-time coaching for sales teams.

Palace offers a platform that organizes private capital data, automates checks, tracks tasks, and streamlines portfolio workflows.

Relling provides modular AI-driven testing tools for system integration and validation.

Cactus enables AI model execution on mobile platforms through an open source inference engine with support for multiple app frameworks.

Imprezia offers an AI advertising platform that integrates brand messages into chatbot and copilot conversations.

Certus AI uses voice automation to manage restaurant phone calls for orders, reservations, complaints, payments, and POS system integration.

Cyberdesk provides virtual desktops for deploying AI agents using simple code.

Albacore is a developer of long-range autonomous underwater vehicles designed to deter maritime invasions.

BootLoop enables AI agents to write, test, and debug firmware directly on the intended hardware.

Meteor presents itself as an agentic browser that understands pages, suggests actions, and automates tasks with a single click.

DeepGrove specializes in developing ultra-efficient, ternary-weight AI models optimized for deployment on edge and low-power devices.

Mimos offers an AI platform that helps regulated firms improve visibility in AI search results and monitor content for compliance issues.

Kestroll is an AI-based platform that offers a central interface for the entire organization to access and distribute content.

Phases automates clinical trial recruitment by AI agents that scan patient databases, schedule visits, and maintain engagement.

Riff offers an AI-powered music production platform for music creation.