Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.
Verified emails & LinkedIn for founders across this portfolio.
Rise Reforming converts stranded biogas from various sources like wastewater plants and farms into valuable chemicals on-site.
PRINCEPS develops AI-native software for compliance, operational resilience, and administrative workflows in the energy sector.
Experiential Labs provides an open-source AI gateway that unifies cloud models, self-hosted hardware, and custom API keys.
Markov is a data engineering company that builds expert computer-use datasets for frontier AI labs.
Touchmark provides AI infrastructure solutions focused on solving pricing challenges through artificial intelligence technologies.
Luca IQ is a modern tax software platform for CPA firms, covering client intake, tax preparation, review, and e-filing.
Rindler develops a Model Context Protocol (MCP) platform enabling AI agents to interact reliably with websites that lack APIs.
Riften is an AI infrastructure platform that reduces model costs and builds private, company-specific AI intelligence.
Rekursiv AI develops autonomous systems that hypothesize, perform research, and design machine learning experiments.
Insurf provides AI-based tools for managing prior authorizations, denial appeals, and health plan cost modeling.
Lamb Labs is building model processing units that hardcode AI models into silicon for faster, more efficient inference.
Familiar Labs is an AI-powered translation lab that makes high-quality video dubbing with voice and lip-sync across 30 languages.
tash is an investment platform that offers professionally managed indices and fractional shares of iconic trading cards.
Instaplay turns text prompts into playable browser games that users can create, publish, share, and play.
Realpact is an AI-powered real estate platform that automates transactions, contracts, workflows, and compliance.
CoArena provides a live evaluation platform and public leaderboard where AI computer-use agents race side-by-side on real-world tasks.
Atomarine builds floating, modular offshore data center barges cooled by seawater and powered by standalone vessels to bypass land grids.
Codag cuts coding-agent costs by optimizing large tool outputs like logs and test results so agents consume fewer tokens.
TryNearby connects local businesses with nearby creators to automate authentic user generated content, reviews, and local discovery.
Dawn Industries is an AI platform that builds VIM, an intelligent system for diagnosing and fixing faults in industrial automation cells.
Tracer is an AI platform that helps companies use the right AI model for each task by combining models, company context, and tools.
ProjectX is reimagining the future of computing with the first it's kind web-based compute platform "Infinity".
Sequen is an AI-native Behavior Design Engine and reinforcement-learning-driven platform that powers adaptive in-session search.
Understood Care is a virtual patient advocacy platform specifically for individuals with Medicare.
Y Combinator has invested in 8,084 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.
Y Combinator's top investment sectors include Artificial Intelligence (AI), Software, Machine Learning, B2B, Cloud Computing. The firm invests across 66 different industry categories.
Among tracked funding rounds, Sequen received $16.0M in a Series A round. Y Combinator's total known invested capital is $56.8B.
Y Combinator's average investment size is $10.2M across its portfolio of 8,084 companies.
Recent Y Combinator portfolio additions include Rise Reforming, PRINCEPS DEV LTD, Experiential Labs, Markov, Touchmark. These companies were founded in 2020 or later.