mem0ai/mem0 vs letta-ai/letta
mem0ai/mem0 scores higher overall: 78/100 (A-tier) against 77/100 (A-tier). mem0ai/mem0 leads on skill leverage, documentation, maintenance; letta-ai/letta leads on reliability, safety, evaluation readiness. Scored 2026-07-07, methodology v1.0.
Dimension by dimension
| Dimension | mem0 | letta |
|---|---|---|
| Reliability | 72 | 74 |
| Skill Leverage | 80 | 78 |
| Documentation | 84 | 82 |
| Maintenance | 92 | 86 |
| Safety / Governance | 66 | 70 |
| Evaluation Readiness | 70 | 74 |
| Composability | 82 | 72 |
| Adoption (capped) | 88 | 82 |
| Overall | 78 · A | 77 · A |
The entries
A universal memory layer for AI agents: extraction, storage, and retrieval of user and session memories with SDKs across the major agent…
A platform for stateful agents with self-editing memory, descended from the MemGPT research line: agents manage their own memory blocks…
Frequently asked questions
mem0ai/mem0 or letta-ai/letta?
mem0ai/mem0 scores higher overall (78 vs 77, methodology v1.0). But they are the same category, so the dimension table below is the real answer.
How is this comparison generated?
Both scorecards come from the same public rubric with evidence notes, scored by the same editorial process. This page presents them side by side; it adds no new judgments beyond the scores themselves.