Worldbuild

SF Compute sells time on large-scale GPU clusters, allowing customers to enter contracts that can be exited by selling back to a liquid market, thus reducing the risk associated with long-term agreements.

Truffle is a development platform that enables users to build and deploy applications using the Truffle SDK. It provides tools for creating, testing, and deploying apps, including a simple weather-checking application that interacts with external APIs.

Fractal Power builds and operates the critical infrastructure layer to the modern economy, delivering energy where and when it's needed most through a vertically integrated platform.

Interfere is the experience layer for modern product teams, providing software that can detect, triage, and fix bugs automatically without human intervention.

Flower Computer is developing innovative communication technologies, including Yuma, a chat app that allows interaction with everyday objects. They also have a Hivemind skill-sharing system and a fast static embedding model.

Armory Medical is an AI lab developing intelligent systems to automate healthcare operations, allowing staff to focus on critical tasks. They aim to revolutionize healthcare delivery in the U.S.

Company Picnic is a service-oriented company that focuses on providing solutions to enhance workplace culture and employee engagement. Their platform invites users to sign up for updates, indicating a commitment to keeping their audience informed and engaged.

Actual Computer is building a system for inference that can coordinate real hardware as it exists, allowing for hosting GGUF models on local devices as well as across them, while striving to produce realtime tokens/second on everything from frontier-capable hardware to low-resource devices.

Athanor is building America's first vertically integrated manufacturer of specialty nitrogen derivatives, starting with creatine and scaling into pharma, defense, agriculture, semiconductors, and advanced materials.

Pre-seed AI-only investor anchored to 50+ founders/operators from Anthropic, NVIDIA and OpenAI who run pre-seed funds, delivering 5× deal flow, focused partner attention (8–10 investments), and Boston–NYC research-to-enterprise links. Flybridge operates a 'Next Wave' model where 50+ founders and operators from companies like Anthropic, NVIDIA, and OpenAI run pre-seed funds that Flybridge anchors and supports, allowing them to see 5x more opportunities than typical seed funds while staying deliberately small with partners making only 8-10 investments per fund. The firm has fully re-centered around an AI-only thesis as 'the East Coast firm backing our AI-powered future,' organizing investments across three AI layers while leveraging their Boston/NYC position where academic research pipelines from Harvard-MIT intersect with Fortune 500 enterprise buyers.

Seed-stage investor focused on data-centric, moat-driven startups; founder-first (no board seats, won't vote founders out), offers late-stage operating support at seed and limits partners to 6–8 companies.

Seed-stage led by former Facebook and OpenAI engineers focused on foundational infrastructure (developer platforms, AI systems), offering an intentional learning community with coding early-career engineers in hybrid technical-investing roles.