Both sit in the memory layer with similar commercial terms, so the practical split is language: Mem0 targets Python and LangMem targets Python.
Extracts durable facts from conversations and recalls them on the next turn.
Memory primitives that plug straight into LangGraph checkpoints.
| Mem0 | LangMem | |
|---|---|---|
| Licence | Open source | Open source |
| Pricing | freemium | open source |
| Self-hostable | Yes | Yes |
| Languages | Python, TypeScript | Python |
| Install | pip install mem0ai | pip install langmem |
| Keys required | MEM0_API_KEY | None |
| Benchmark | Mem0 | LangMem |
|---|---|---|
| LoCoMo | 92.5% self-reported 62.47% independent | 78.05% independent |
Both sit in the memory layer with similar commercial terms, so the practical split is language: Mem0 targets Python and LangMem targets Python. Mem0: Extracts durable facts from conversations and recalls them on the next turn. LangMem: Memory primitives that plug straight into LangGraph checkpoints.
Mem0 can run on your own infrastructure. LangMem can run on your own infrastructure.
Mem0 is open source (freemium). LangMem is open source (open source).
Every page here answers to Accept: text/markdown and returns the same content at roughly a tenth the tokens. No separate site, no toggle — same URL.
curl -s -H "Accept: text/markdown" https://newagent.build/compare/mem0-vs-langmem