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LettaLT
LT

Letta

New

Memory-first infrastructure for AI agents

Visit
AISeedEst. 202310–50 employeesSan Francisco

Letta (formerly MemGPT) is the open source framework for building AI agents with persistent memory. Unlike standard LLM applications that forget context between sessions, Letta agents remember users, learn over time, and maintain state across conversations. It originated from groundbreaking research at UC Berkeley on memory management for LLMs.

Total Raised$10M
a16zJeff DeanYann LeCun

Founders

C
Charles Packer
S
Sarah Wooders