Letta
Framework for stateful agents with long-term memory (formerly MemGPT).
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About Letta
Letta is listed in our frameworks category and is aimed at builders. Framework for stateful agents with long-term memory (formerly MemGPT). Pricing, as the maker states it: Open source + paid cloud. Maturity: Mature. We last checked the official link on 2026-10-14.
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