Comparison
Mem0 vs Zep
Mem0 and Zep both give agents memory that survives the session. Mem0 is a memory layer you can run open source or hosted, storing extracted facts per user or agent. Zep builds memory around a temporal knowledge graph, tracking how facts change over time through its Graphiti engine.
Side by side
| Dimension | Mem0 | Zep |
|---|---|---|
| Pricing model | Freemium (hosted paid tiers) | Freemium (hosted paid tiers) |
| License / terms | Apache-2.0 | Not open source |
| Deployment | library, self-hosted, cloud | cloud, cloud-byok, byoc |
| MCP support | Mem0 integration references describe an MCP server option and editor plugins with MCP server connection, exposing memory profile, search, and conclude tools in compatible agents. | Zep documentation describes a Memory MCP Server at a remote Streamable HTTP endpoint with OAuth sign-in, also present as a zep-mcp-server directory in the repository and as seat allocations on pricing plans. |
| Primary package | PyPI: mem0ai 2.0.20 | PyPI: zep-cloud 3.28.0 |
| Authentication | API keys for hosted platform and self-hosted server, with admin registration for self-hosted deployments | Account sign-up with API access for cloud, and OAuth 2.1 with PKCE through an identity provider for the Memory MCP Server |
| GitHub stars (checked 2026-10-07) | 66,781 | 4,951 |
| Vendor | Mem0 | Zep |
AgentsUse has not run a head-to-head benchmark, so this page claims no winner. It maps the differences your job has to price.
Every cell comes from the verified profiles, which trace to the official repository, package page, and documentation checked on the dates shown there. Pricing cells name the model, not a price: vendor prices change, so check each profile for the sourced pricing summary and official pricing link.
Differences that decide the choice
- Model of memory: Mem0 extracts and stores facts with vector recall. Zep builds a knowledge graph where facts have validity windows, so outdated beliefs can be superseded rather than just joined by newer ones.
- Deployment: Mem0 has a widely used open-source path. Zep centers on its hosted platform with the Graphiti graph engine open source underneath.
- Fit: Mem0 is the quicker add to an existing agent. Zep pays off when the timeline of what was true when actually matters, like long-running customer or project histories.
Choose Mem0 when
Choose Mem0 when you want a memory layer running today, open source or hosted, with per-user fact recall.
Choose Zep when
Choose Zep when facts change over time and the agent needs to know what was true at a given moment, not just the latest version.
Sources and freshness
Compared from the verified profiles for Mem0 (checked 2026-10-07) and Zep (checked 2026-10-07). AgentsUse has not run a head-to-head benchmark, so this page claims no winner. It maps the differences your job has to price. Spotted an error? Send a correction.