Day One Ventures

You.com is the AI Search Infrastructure company for enterprises. We build the intellectual backbone that enables organizations to reason like experts, decide with confidence, and act at scale through intelligent agents and workflows. We deliver real-time, accurate, and citation-backed answers—enabled by our proprietary vertical-specific web indices, which integrate public and domain-specific data for the deepest, most relevant search experience available.

World is the real human network, providing identity, finance, and community to every human through its innovative tools and infrastructure designed for the Age of AI.

Symbolica is an AI research lab focused on category theory for symbolic reasoning. It develops general-purpose program synthesis engines.

Invisible Technologies provides AI software solutions for various industries, focusing on operational efficiency and advanced AI model training.

Abel is a police technology company providing innovative solutions to law enforcement agencies, including AI-powered tools for report generation and citizen engagement.

Regie.ai is an AI Sales Engagement Platform that automates prospecting tasks, allowing sales teams to focus on building relationships and having meaningful conversations with prospects. It integrates various functionalities such as dialing, emailing, and social outreach into a single workflow, powered by AI agents.

Ava is an AI-based service providing affordable, accurate live captions for the Deaf and hard-of-hearing. It offers various plans for different users and meets ADA requirements.

Enso Analytics is a low-code platform designed for data preparation, blending, and automation, aimed at finance, accounting, and revenue operations professionals.

KnowHere News provides local news coverage across various categories including US news, crime news, and weather updates.

Snafu Records provides growth capital and marketing services to music artists, labels, and distributors, helping them maximize the value of their music catalogs through data-driven insights and financial support.

Calypso AI is a leading provider of AI security solutions, focused on protecting generative AI systems in real-time through a unified platform that includes red-teaming, defense, and observability.

GoAhead Ventures replaces traditional warm intros with an open video-pitch funnel that any founder worldwide can submit to. They run all submissions through a standing panel of ~150 external raters who score pitches against benchmarks like YC Demo Day. The three-person team reviews 3,000+ founder videos per year and can deliver funding decisions within days through a non-consensus model where any single partner can greenlight an investment, leading ~40 deals annually with the speed of an accelerator but the check size and ownership of a lead VC fund.

Operates a Sage model where CEOs and serial founders embed as hands-on operators, sometimes interim leaders, hatch and prototype startups internally, and bring hundreds of millions in follow-on capital. The firm also hatches new companies internally by having partners identify opportunities, do research and prototyping, then match concepts with founders—functioning partially like a startup studio while running a traditional venture fund.

Co-founds and incubates startups over 4–18 months inside the Allen Institute for AI's frontier research ecosystem, offering up to $600k, $1M non-dilutive cloud credits, and ~7% SAFE. The incubator is born inside the Allen Institute for AI, a nonprofit research institute funded with more than $100M annually from the Paul Allen estate, giving it unusually deep roots in frontier AI research rather than just commercial AI hype, with leadership drawn directly from the AI2 research ecosystem including founding CEO Oren Etzioni.