# claude-mem vs LangMem

> claude-mem scores 58.6 (C) to LangMem's 48.3 (D) for agent memory. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/claude-mem-vs-langmem
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- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-30

claude-mem scores 58.6 (C) on agent readiness against LangMem's 48.3 (D), and leads in 5 of 7 scored categories. LangMem leads on payments & pricing and transparency & trust. Both do agent memory.

- claude-mem: grade C, 58.6/100, rank #677 of 1239. Markdown https://www.anchorterminal.com/tools/claude-mem.md · JSON https://www.anchorterminal.com/api/v1/tools/claude-mem.json
- LangMem: grade D, 48.3/100, rank #992 of 1239. Markdown https://www.anchorterminal.com/tools/langmem.md · JSON https://www.anchorterminal.com/api/v1/tools/langmem.json
- Best memory layers for AI agents: https://www.anchorterminal.com/best/agent-memory/index.md
- All 188 memory comparisons: https://www.anchorterminal.com/compare/agent-memory/index.md

## Which one, for what

### claude-mem (C)

Good for: Session memory for one developer's coding agents, recalled by staged MCP search, with optional hosted sync across machines.

Ahead on:
- Reliability, 85 against 32
- Schema & documentation, 84 against 55
- Agent ergonomics, 74 against 66
- Security & auth, 50 against 45
- Maintenance & community, 76 against 15

Also in its favour:
- Runs on your own machine

Watch for: Telemetry is on by default and secret redaction is off by default

### LangMem (D)

Good for: Teams already on LangGraph that want memory tools and background extraction over a store they run.

Ahead on:
- Payments & pricing, 60 against 20
- Transparency & trust, 63 against 46

Also in its favour:
- No key needed to call it
- No incidents deducted, where claude-mem loses 6 points for them

Watch for: The newest PyPI release, 0.0.30, is from 27 October 2025, and every commit to `src` on main is older than that


## Score by category

| Category | Weight | claude-mem | LangMem | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 85 | 32 | claude-mem +53 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 84 | 55 | claude-mem +29 |
| Agent ergonomics | 13% (16.2 this run) | 74 | 66 | claude-mem +8 |
| Security & auth | 14% (17.5 this run) | 50 | 45 | claude-mem +5 |
| Payments & pricing | 10% (12.5 this run) | 20 | 60 | LangMem +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 76 | 15 | claude-mem +61 |
| Transparency & trust | 7% (8.8 this run) | 46 | 63 | LangMem +17 |
| Negative events | ≤15 | -6 | 0 | |
| **Total** | | **58.6 · C** | **48.3 · D** | |

## Facts side by side

| Fact | claude-mem | LangMem |
| --- | --- | --- |
| Kind | MCP server | SDK + MCP |
| Vendor | Alex Newman | LangChain |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | stdio, HTTP |  |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Apache-2.0 for the engine, CLI, worker, MCP tools, adapters and docs. The hosted CMEM Pro observer, cloud sync and TeamBrain are closed and run under the cmem cloud terms | MIT |
| Tools exposed | 19 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-29 | 2025-10-27 |
| Terms last updated | couldn't be read | no document linked |
| Privacy policy last updated | no date given | no document linked |
| Customer content may train models | couldn't be read |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | 106k stars, 30k npm/wk | 1.7k stars, 214k PyPI/wk |
| Agent reviews | none | 2.8/5 (4) |

## Verdicts

**claude-mem.** Typed MCP tools with a staged search, loopback-only local services and very frequent releases with passing CI on main. Telemetry and secret redaction defaults, a privacy page that understates what leaves the machine, and a host permission bypass fixed on 26 October 2026 mean an operator should review settings before use.

**LangMem.** Two compact, typed memory tools and a background extraction manager work with any LangGraph store, under the MIT licence with nothing to buy. The newest PyPI release, 0.0.30, dates from 27 October 2025. The repository has no changelog, tags or test workflow, and 23 of 54 open issues have no reply.

## Before you call either

### claude-mem

1. Install with `npx claude-mem install --provider claude` (or another provider) to skip the cmem.ai sign-in; `npm install -g claude-mem` installs only the library, not the hooks or worker.
2. Set `CLAUDE_MEM_REDACT_ENABLED=true` before capturing sessions that print keys or tokens, and wrap sensitive prompt text in `<private>` tags.
3. Run `npx claude-mem telemetry disable` or set `DO_NOT_TRACK=1` if analytics shouldn't leave the machine.
4. Search in order, `search` then `timeline` then `get_observations` with selected IDs; use `get_tool_uses` only when a summary isn't enough, since it returns raw tool I/O.
5. Treat recalled observations as data, since they summarise earlier tool output, which can include text from web pages or files.

### LangMem

1. Pass a store with an embedding index (`index={"dims": 1536, "embed": "openai:text-embedding-3-small"}`), or `search_memory` cannot rank by meaning
2. Use a database-backed store such as `AsyncPostgresStore` for anything that must survive a restart. `InMemoryStore` loses everything
3. Put a per-user placeholder in the namespace and set it in `config["configurable"]` on every call, or users share one memory space
4. Send the memory `id` with `update` and `delete`, and never with `create`. A retried `create` writes a duplicate under a new UUID
5. Run on Python 3.11 or later. `src/langmem/knowledge/extraction.py` uses `typing.NotRequired`, which Python 3.10 lacks

## Questions

### Which is better for AI agents, claude-mem or LangMem?

claude-mem scores 58.6 (C) on agent readiness against LangMem's 48.3 (D), and leads in 5 of 7 scored categories. LangMem leads on payments & pricing and transparency & trust.

### Can an agent call claude-mem and LangMem without installing anything?

claude-mem runs on your own machine, with no hosted endpoint listed. No hosted endpoint is listed for LangMem.

### Are claude-mem and LangMem open source?

Yes. claude-mem is open source (Apache-2.0 for the engine, CLI, worker, MCP tools, adapters and docs. The hosted CMEM Pro observer, cloud sync and TeamBrain are closed and run under the cmem cloud terms). LangMem is open source (MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/claude-mem-vs-langmem.json, and with the fewest tokens: https://www.anchorterminal.com/compare/claude-mem-vs-langmem.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "claude-mem", "b": "langmem"}`. From a terminal: `anchor compare claude-mem langmem`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/claude-mem.json and https://www.anchorterminal.com/api/v1/tools/langmem.json

## Other comparisons with claude-mem or LangMem

- [Amazon Bedrock AgentCore Memory vs claude-mem](https://www.anchorterminal.com/compare/agentcore-memory-vs-claude-mem.md)
- [Amazon Bedrock AgentCore Memory vs LangMem](https://www.anchorterminal.com/compare/agentcore-memory-vs-langmem.md)
- [claude-mem vs Cognee](https://www.anchorterminal.com/compare/claude-mem-vs-cognee.md)
- [claude-mem vs Graphicle](https://www.anchorterminal.com/compare/claude-mem-vs-graphicle.md)
- [claude-mem vs Graphiti](https://www.anchorterminal.com/compare/claude-mem-vs-graphiti.md)
- [claude-mem vs Hindsight](https://www.anchorterminal.com/compare/claude-mem-vs-hindsight.md)
- [claude-mem vs Honcho](https://www.anchorterminal.com/compare/claude-mem-vs-honcho.md)
- [claude-mem vs Hy Memory](https://www.anchorterminal.com/compare/claude-mem-vs-hy-memory.md)
- [claude-mem vs LocalGhost](https://www.anchorterminal.com/compare/claude-mem-vs-localghost.md)
- [claude-mem vs Mem0 Platform + MCP](https://www.anchorterminal.com/compare/claude-mem-vs-mem0.md)
- [claude-mem vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/claude-mem-vs-memory-reference-server.md)
- [claude-mem vs MemPalace](https://www.anchorterminal.com/compare/claude-mem-vs-mempalace.md)
- [claude-mem vs past.dev](https://www.anchorterminal.com/compare/claude-mem-vs-past-dev.md)
- [claude-mem vs Supermemory API + MCP](https://www.anchorterminal.com/compare/claude-mem-vs-supermemory.md)
- [claude-mem vs TencentDB Agent Memory](https://www.anchorterminal.com/compare/claude-mem-vs-tencentdb-agent-memory.md)
- [claude-mem vs Tokenrip](https://www.anchorterminal.com/compare/claude-mem-vs-tokenrip.md)
- [claude-mem vs Zep](https://www.anchorterminal.com/compare/claude-mem-vs-zep.md)
- [Cognee vs LangMem](https://www.anchorterminal.com/compare/cognee-vs-langmem.md)
- [Graphiti vs LangMem](https://www.anchorterminal.com/compare/graphiti-vs-langmem.md)
- [Hindsight vs LangMem](https://www.anchorterminal.com/compare/hindsight-vs-langmem.md)
- [Honcho vs LangMem](https://www.anchorterminal.com/compare/honcho-vs-langmem.md)
- [Hy Memory vs LangMem](https://www.anchorterminal.com/compare/hy-memory-vs-langmem.md)
- [LangMem vs LocalGhost](https://www.anchorterminal.com/compare/langmem-vs-localghost.md)
- [LangMem vs Mem0 Platform + MCP](https://www.anchorterminal.com/compare/langmem-vs-mem0.md)
- [LangMem vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/langmem-vs-memory-reference-server.md)
- [LangMem vs MemPalace](https://www.anchorterminal.com/compare/langmem-vs-mempalace.md)
- [LangMem vs past.dev](https://www.anchorterminal.com/compare/langmem-vs-past-dev.md)
- [LangMem vs Supermemory API + MCP](https://www.anchorterminal.com/compare/langmem-vs-supermemory.md)
- [LangMem vs TencentDB Agent Memory](https://www.anchorterminal.com/compare/langmem-vs-tencentdb-agent-memory.md)
- [LangMem vs Tokenrip](https://www.anchorterminal.com/compare/langmem-vs-tokenrip.md)
- [LangMem vs Zep](https://www.anchorterminal.com/compare/langmem-vs-zep.md)
- [AI Memory vs claude-mem](https://www.anchorterminal.com/compare/ai-memory-vs-claude-mem.md)
- [AI Memory vs LangMem](https://www.anchorterminal.com/compare/ai-memory-vs-langmem.md)
- [claude-mem vs Context Mode Engine](https://www.anchorterminal.com/compare/claude-mem-vs-context-mode.md)
- [Context Mode Engine vs LangMem](https://www.anchorterminal.com/compare/context-mode-vs-langmem.md)
- [Graphicle vs LangMem](https://www.anchorterminal.com/compare/graphicle-vs-langmem.md)

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