A side-by-side of two memory & context (managed) for building AI agents — live GitHub data, languages, and what each is best at.
Short answer: LangMem leads LangMem vs Letta Cloud by community traction (★ 0 vs ★ 0). Pick LangMem for its strengths; pick Letta Cloud for its strengths.
| LangMem | Letta Cloud | |
|---|---|---|
| GitHub stars | ★ 0 | ★ 0 |
| Language | — | — |
| Category | Memory & context (managed) | Memory & context (managed) |
| Best for | ||
| Repository | / | / |
LangMem and Letta Cloud are both credible choices. By community traction, LangMem leads (★ 0). Pick LangMem for its strengths; pick Letta Cloud for its strengths.
Both are credible memory & context (managed). By community traction LangMem leads (★ 0). Pick LangMem for its strengths; pick Letta Cloud for its strengths.
LangMem is Open-source SDK from LangChain that gives LangGraph agents long-term memory (extraction, search, prompt optimization) in your own store.. Letta Cloud is Fully-managed API for stateful agents that manage their own memory like an OS (context = RAM, archival = disk) and self-improve over time..
LangMem has more — ★ 0 vs ★ 0 (live counts).
Often yes — many teams combine memory & context (managed). Check each tool's docs for interop; they solve overlapping but not identical problems.
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