Graphon raises $35M to give AI agents a long-term memory

The San Francisco startup's Series A, led by RRE Ventures, bets that enterprise AI needs connected memory, not bigger context windows AI agents are getting smarter, but many still have the memory of a goldfish at a crowded party. Graphon AI just raised $35 million to fix that. The San Francisco startup closed a Series A round on November 10, 2026, to build what it calls persistent relational memory for AI agents. The goal is to let those agents reason across huge piles of enterprise data without forgetting what they saw a few documents ago. RRE Ventures led the round. HP and Hitachi Ventures also participated, which gives the cap table a noticeably corporate flavor. The timing is aggressive.

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