San Francisco-based startup Graphon has secured $35 million in a Series A funding round led by RRE Ventures. The round, which closed on November 10, 2026, also saw participation from HP and Hitachi Ventures. This follows a $8.3 million seed round raised in May 2026, just six months prior to the latest investment.
Founded in July 2025, Graphon develops a platform designed to provide persistent relational memory for AI agents. The system functions as a pre-model intelligence layer that processes documents, videos, images, and logs to build a self-supervised, schema-free knowledge graph. This allows AI models to reason across large datasets by understanding relationships between information.
The company is currently deploying its technology with early partners, including the South Korean GS Group, HP, and the San Francisco 49ers. Graphon reports performance metrics of 94% on LoCoMo and 84% on DolphinBench, while also securing the top spot on ATM-Bench. Its platform is model-agnostic, supporting integration with various AI models like GPT and Claude.
