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Alternatives · Memory systems

LangMem and LangGraph Store alternatives, graded

thecontinuitylayer.com/alternatives/langmem

LangMem and LangGraph Store scores highest on its shelf, 7½ of 8 (grade A), so every alternative below scores the same or lower: Mem0 (7½, A), MemOS (7, 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
LangMem and LangGraph Store · 7½ of 8
13
memory systems to compare
0
score higher
3 November 2026
Makers' pages checked

Every memory system on the record, ranked

LangMem and LangGraph Store’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 systemGradeOpen sourceSelf-hostExportAny modelDelete
Mem0#1 · Mem0A7½/8
LangMem and LangGraph Store#2 · LangChain · this oneA7½/8
MemOS#3 · MemTensorA−7/8
Letta#4 · Letta (formerly MemGPT)B+6½/8
Cognee#5 · CogneeB+6½/8
Honcho#6 · Plastic LabsB+6½/8
Zep Cloud#7 · ZepB6/8
Supermemory#8 · SupermemoryB6/8
Memobase#9 · memodb-ioB−5½/8
Claude memory tool#10 · AnthropicC4½/8
Graphiti#11 · ZepC4½/8
Agent Framework memory#12 · MicrosoftC−4/8
Agent Engine Memory Bank#13 · Google CloudD3½/8
OpenAI conversation state#14 · OpenAID3/8
  • 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?

LangMem and LangGraph Store alternatives, by what matters

8 memory systems that are open source

  1. A Mem0
  2. A− MemOS
  3. B+ Letta
  4. B+ Cognee
  5. B+ Honcho
  6. B− Memobase
  7. C Graphiti
  8. C− Agent Framework memory

LangMem and LangGraph Store passes this test too.

9 memory systems you can run yourself

  1. A Mem0
  2. A− MemOS
  3. B+ Letta
  4. B+ Cognee
  5. B+ Honcho
  6. B Supermemory
  7. B− Memobase
  8. C Graphiti
  9. C− Agent Framework memory

LangMem and LangGraph Store passes this test too.

3 memory systems that let you take your memory out

  1. A Mem0
  2. C Claude memory tool
  3. C Graphiti

LangMem and LangGraph Store passes this test too.

7 memory systems that work with more than one model provider

  1. A Mem0
  2. A− MemOS
  3. B+ Letta
  4. B+ Cognee
  5. B+ Honcho
  6. B Supermemory
  7. C Graphiti

LangMem and LangGraph Store passes this test too.

Alternatives to the others

The whole shelf: Memory systems. How the grades are made: How we grade. No maker pays for a place or a grade.