Y Combinator's B2B Portfolio

Rational is an AI-powered accounting firm designed to automate accounting end-to-end.

Dock is a B2B AI enterprise software company providing a multiplayer agent workspace for human-AI team collaboration.

Stormy is an AI tool that boosts productivity by automating tasks and learning from your screen activity.

Ambral is an AI-driven solution designed to enhance account management for B2B businesses.

Blee is an artficial intelligence company that offers a platform to review marketing materials and access compliance reports.

Luthor automates your end-to-end content strategy. Scale up content delivery — effortlessly.

Sigma AI streamlines e-commerce brand customer support with automation, accelerating responses, tagging, and ticket closure.

HyperDX is a SAAS company that offers simple workflows that assit engineers in resolving production bugs quicker.

IvyCheck is a AI driven cybersecurity company that offers enterprise teams a tool for extracting hidden insights from data.

Uiflow is a no-code platform that allows its users to build production applications using their enterprise data.

Maingen is an industrial AI company building AI systems to help operate and manage industrial infrastructure.

Vottun is a platform that certify and track data for optmizing business processes using blockchain and DLT technology.

Vespper is the first MCP for docx documents

PoloTab is a software company that develops POS and management solutions for LatAm restaurants and Coffee Shops.

Asterisk is an AI tool that automatically detects security vulnerabilities in codebases, automating audits with near-zero false positives.

Simplex generates on-demand vision datasets from 3D scenes to train AI models helping companies save time in data collection.

Pinnacle is an API for RCS, enabling developers to create interactive, app-like messages for seamless purchasing on iOS and Android.

Ficra gives product teams real-time visibility into user journeys, reducing time spent on auditing and improving product quality.

Focal helps financial institutions automate compliance, risk, and dispute operations by leveraging AI to streamline manual workflows.

Building the platform for companies to ship AI agents fast

Spott is developing the ATS and CRM of the future for staffing & recruitment firms.

Brightflow AI is a financial intelligence platform that provides cash flow management, forecasting, and financing tools.

Applied Kinetics builds and deploys specialized AI employees for mission critical industries.

Billow AI is an AI-powered platform focused on automating accounts receivable (A/R) collections, primarily for law firms.

Bravi offers an AI‑powered voice and chat assistant that handles lead qualification, appointment booking, and CRM integration.

SideGuide allows developers to search for and communicate with documentation and resources.

Pelica is building healthcare's AI operating system

Akon Labs develops GitNexus, a code intelligence engine for software engineering agents.

Luca IQ is a modern tax software platform for CPA firms, covering client intake, tax preparation, review, and e-filing.

Familiar Labs is an AI-powered translation lab that makes high-quality video dubbing with voice and lip-sync across 30 languages.

Lamb Labs is building model processing units that hardcode AI models into silicon for faster, more efficient inference.

Conifer provides AI routing gateway that optimizes token spend by intelligently routing queries across local hardware and cloud models.

Insurf provides AI-based tools for managing prior authorizations, denial appeals, and health plan cost modeling.

GitCafe provides a collaborative code hosting and review platform with stacked pull requests, GitHub synchronization, and a developer CLI.

Bizmark is an AI platform that automates and optimizes enterprise decisions across procurement, production, labor, and sales.

Realpact is an AI-powered real estate platform that automates transactions, contracts, workflows, and compliance.

Alpas develops software for procurement departments to identify suppliers 10x faster.

Triver provides invoice finance and working capital solutions that help small businesses access cash from unpaid invoices.

Aglide offers seamless access management and single sign-on for all apps, eliminating the need for SAML support.

AllVoices is an employee relations platform that enables companies to efficiently and effectively resolve workplace issues.