Y Combinator Winter 2024 (W24) Companies

Magic Hour is an AI-powered video creation platform that enables users to generate videos from ideas without requiring extensive production expertise. The platform serves content creators, small business owners, and other individuals looking to produce video content efficiently.

4 investors

Maia is an AI-powered platform that provides relationship support and communication guidance for couples, offering advice, conflict resolution tools, and interactive features like conversation starters and date planning. The service targets couples seeking to improve their relationships without stigma.

1 investor

Malibou provides an HR and payroll management platform for small and medium businesses, combining digital tools for employee management (contracts, absences, leave, interviews, documents) with dedicated expert payroll support.

2 investors

Mango Health develops an AI-powered tool that guides users through exposure and response prevention (ERP) therapy for obsessive-compulsive disorder, offering continuous support and educational content as an alternative to traditional clinical treatment.

1 investor

Manifold provides a platform for freight carriers and brokers to identify, bid on, and automate quoting for spot freight loads from customer portals and email. The platform combines manual bidding tools with AI-driven automation to help teams manage load opportunities and optimize pricing across multiple sources.

3 investors

Marblism provides AI employees that handle specialized business tasks like SEO, executive assistance, lead generation, and community management for small businesses. The platform combines AI automation with human oversight to serve 40,000 SMBs seeking affordable alternatives to hiring full-time staff.

3 investors

Marr Labs provides an AI operating layer that automates customer engagement workflows—including voice and chat interactions, document processing, and multi-step processes—with compliance controls built in for regulated industries like healthcare and financial services.

3 investors

Mathos AI is an AI-powered math solver and tutoring platform that helps students solve math problems across algebra, calculus, geometry, and physics through photo capture, voice input, or text. The platform provides step-by-step explanations, homework assistance, and interactive learning games for students.

1 investor

Meticulate is a prospecting platform that uses custom rulesets and signal monitoring to automate outbound sales outreach across email, LinkedIn, and phone for sales teams. It targets prospect signals, applies buyer intelligence, and integrates with CRM systems to improve outbound sales ROI.

4 investors

Metofico builds a no-code platform for analyzing large and complex datasets in life science research, allowing scientists without programming expertise to extract insights from neuroscience, behavioral tracking, and other experimental data. The tool aims to reduce the time researchers spend on data analysis tasks.

2 investors

Miden builds modern payments infrastructure for businesses across Africa and beyond, offering compliant cross-border money movement and embedded banking solutions. The platform enables enterprises to launch and scale secure payment programs with regulatory licenses across multiple jurisdictions.

2 investors

Million provides AI coding tools that verify code correctness and performance, targeting developers building web applications. The company has developed several open-source projects including React Scan, React Doctor, and Million.js that help developers test and optimize their code.

1 investor

ModelML builds machine learning solutions for the financial services industry, leveraging expertise from senior professionals across banking and investment management.

3 investors

Momentic builds an AI-powered end-to-end testing platform that automatically writes, runs, and maintains tests for web and mobile applications. The platform serves engineering teams building software faster with AI, helping them catch bugs in production without managing complex test scripts.

4 investors

Monumint is a conversational AI platform that automates customer interactions across email, SMS, and voice for regulated financial institutions. The platform handles the full borrower lifecycle, integrating with loan systems, CRMs, and credit data while maintaining compliance with lending regulations.

1 investor

NanoCorp builds autonomous AI agents that create and operate full companies from a single natural language prompt, handling product development, website deployment, customer acquisition, payments, and operations without requiring code or a team. The platform serves solo founders, side-project operators, and non-technical entrepreneurs who want to launch revenue-generating businesses in minutes.

1 investor

Navier provides cloud-based engineering agents that automate simulation setup and workflows for hardware engineers in aerospace and defense, enabling faster design iterations without manual configuration overhead.

2 investors

nCompass Technologies builds an AI agent and VS Code extension that identifies GPU performance bottlenecks and generates optimization code, helping developers reduce GPU system analysis and implementation time from weeks to days.

1 investor

Newton builds a unified phone system platform for dental practices, integrating AI receptionist capabilities with traditional staff workflows to replace fragmented communication tools. The platform serves dental offices looking to streamline multi-location call management and operations.

1 investor

NowHouse provides instant trade settlement technology for stock brokerages.

1 investor

Nuanced provides a desktop application where AI agents assist software developers by converting preliminary concepts into detailed specifications and maintaining involvement throughout the build process.

2 investors

Octolane is an AI-powered CRM for early-stage founders that automates sales workflows including follow-ups, deal field updates, and prospect research without manual data entry. The product consolidates CRM, meeting recording, email sequences, reminders, and visitor tracking into a single platform designed for founders managing their own sales processes.

1 investor

Ocular builds data infrastructure and annotation services to encode human expertise into AI models across modalities and domains. The company creates training datasets—including voice, speech, transcription, and evaluation data—sourced from elite professionals to improve AI performance on real-world tasks requiring nuanced human judgment.

2 investors

OddsView provides a platform for bettors to search across millions of real-time sports odds, identify favorable bets using tools like expected value and arbitrage detection, and view historical odds data in one interface.

1 investor