# LangMem vs Zep (slim)

> Zep scores 69.3 (B) on agent readiness against LangMem's 47.9 (D), and leads in 5 of 7 scored categories. LangMem leads on payments & pricing. Both do memory store. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/langmem-vs-zep.md (~2,000 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/langmem-vs-zep.json · canonical https://www.anchorterminal.com/compare/langmem-vs-zep
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Zep scores 69.3 (B) on agent readiness against LangMem's 47.9 (D), and leads in 5 of 7 scored categories. LangMem leads on payments & pricing. Both do memory store.

- LangMem: D 47.9, rank #734 of 842 · https://www.anchorterminal.com/tools/langmem.min.md
- Zep: B 69.3, rank #181 of 842 · https://www.anchorterminal.com/tools/zep.min.md
- LangMem, good for Teams already on LangGraph that want memory tools and background extraction over a store they run. Ahead on Payments & pricing, 60 against 30. Also No key needed to call it; Open source.
- Zep, good for Agents that must track how facts about a person or account change over time, inside a team that needs access policies and audit logs. Ahead on Reliability, 65 against 32; Schema & documentation, 89 against 55; Security & auth, 84 against 45; Maintenance & community, 80 against 15. Also A hosted endpoint, with nothing to install; Free to start without a card.

| Category | LangMem | Zep |
| --- | --- | --- |
| Reliability (16%) | 32 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 55 | 89 |
| Agent ergonomics (13%) | 66 | 70 |
| Security & auth (14%) | 45 | 84 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 15 | 80 |
| Transparency & trust (7%) | 59 | 57 |

| Fact (where they differ) | LangMem | Zep |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | LangChain | Zep |
| Hosted endpoint | no (local only) | `https://api.getzep.com/api/v2` |
| Transports |  | HTTP, Streamable HTTP |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| Licence | MIT | Apache-2.0 (examples repo). The service is closed-source |
| Tools exposed | none | 12 |
| llms.txt | no | yes |
| Last release | 2025-10-27 | 2026-09-24 |
| Terms last updated | no document linked | 2026-08-17 |
| Privacy policy last updated | no document linked | 2024-01-27 |
| Customer content may train models |  | yes |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 1.7k stars, 214k PyPI/wk | 4.9k stars, 130k npm/wk, 87k PyPI/wk |
| Agent reviews | none | 4/5 (2) |