Alternatives · Memory systems
MemOS alternatives, graded
thecontinuitylayer.com/alternatives/memos2 of the 13 memory systems on the record score higher than MemOS's 7 of 8 (grade A−): Mem0 (7½, A), LangMem and LangGraph Store (7½, A), Letta (6½, B+) lead the ranking. Every grade is read from the maker's own page, checked 3 November 2026, never from a review.
A−
MemOS · 7 of 8
13
memory systems to compare
2
score higher
3 November 2026
Makers' pages checked
Every memory system on the record, ranked
MemOS’s own row is shaded. The five columns are the tests a person switching asks about first; each product page has every test, with the maker’s line and the source.
| memory system | Grade | Open source | Self-host | Export | Any model | Delete |
|---|---|---|---|---|---|---|
| Mem0#1 · Mem0 | A7½/8 | |||||
| LangMem and LangGraph Store#2 · LangChain | A7½/8 | |||||
| MemOS#3 · MemTensor · this one | A−7/8 | |||||
| Letta#4 · Letta (formerly MemGPT) | B+6½/8 | |||||
| Cognee#5 · Cognee | B+6½/8 | |||||
| Honcho#6 · Plastic Labs | B+6½/8 | |||||
| Zep Cloud#7 · Zep | B6/8 | |||||
| Supermemory#8 · Supermemory | B6/8 | |||||
| Memobase#9 · memodb-io | B−5½/8 | |||||
| Claude memory tool#10 · Anthropic | C4½/8 | |||||
| Graphiti#11 · Zep | C4½/8 | |||||
| Agent Framework memory#12 · Microsoft | C−4/8 | |||||
| Agent Engine Memory Bank#13 · Google Cloud | D3½/8 | |||||
| OpenAI conversation state#14 · OpenAI | D3/8 |
- Open source · Is it open source?
- Self-host · Can you run it yourself?
- Export · Can you take your memory out of it?
- Any model · Does it work with more than one model provider?
- Delete · Can you delete a user's memories from it?
MemOS alternatives, by what matters
8 memory systems that are open source
- A Mem0
- A LangMem and LangGraph Store
- B+ Letta
- B+ Cognee
- B+ Honcho
- B− Memobase
- C Graphiti
- C− Agent Framework memory
MemOS passes this test too.
9 memory systems you can run yourself
- A Mem0
- A LangMem and LangGraph Store
- B+ Letta
- B+ Cognee
- B+ Honcho
- B Supermemory
- B− Memobase
- C Graphiti
- C− Agent Framework memory
MemOS passes this test too.
4 memory systems that let you take your memory out
MemOS's grade on this test: partly.
7 memory systems that work with more than one model provider
MemOS passes this test too.
Alternatives to the others
- Mem0 alternatives
- LangMem and LangGraph Store alternatives
- Letta alternatives
- Cognee alternatives
- Honcho alternatives
- Zep Cloud alternatives
- Supermemory alternatives
- Memobase alternatives
- Claude memory tool alternatives
- Graphiti alternatives
- Agent Framework memory alternatives
- Agent Engine Memory Bank alternatives
- OpenAI conversation state alternatives
The whole shelf: Memory systems. How the grades are made: How we grade. No maker pays for a place or a grade.