Potential Opportunities

A curated view of select companies and themes we are actively evaluating. These opportunities reflect early access and sourcing conversations. Many never progress to an active allocation, and inclusion here does not imply availability..

xAI

Logo of xAI, a private company invested in by Grain Ventures
xAI is an AI research and deployment company focused on building large-scale foundation models with an emphasis on reasoning and information. Backed by compute access and distribution through X, xAI is positioned to compete at the frontier of general-purpose AI systems.

Platform

Artificial Intelligence, Foundation Models

Access subject to availability, eligibility and final allocation.

Lyten

Logo of lyten, a private company invested in by Grain Ventures

Lyten develops lithium-sulfur battery technology and advanced materials aimed at materially improving energy density, cost, and supply-chain resilience. The company is targeting applications across EVs, defense, and grid storage where performance advantages outweigh incumbent chemistries.

Infrastructure

Advanced Materials, Energy Storage

Access subject to availability, eligibility and final allocation.

Shield AI

Logo of shield ai, a private company invested in by Grain Ventures

Defense technology company building autonomous software and AI pilots for military aircraft and drones. Its core platform enables operations in GPS- and communications-denied environments, with growing adoption across U.S. and allied defense forces.

Platform

Defense Technology, Autonomous Systems

Access subject to availability, eligibility and final allocation.

Lightmatter

Logo of Lightmatter, a private company invested in by Grain Ventures

Lightmatter builds photonic computing and interconnect technology designed to overcome the power and bandwidth limits of traditional silicon in AI workloads. Its architecture targets next-generation data centers where compute density and energy efficiency are critical constraints.

Infrastructure

Semiconductors, AI Infrastructure

Access subject to availability, eligibility and final allocation.

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