For most people, Claude’s built-in memory and transfer feature is the simplest place to start. If you want a separate hosted memory connector, Mem0 and Zep have documented Claude integrations; if you are building an app, Anthropic’s API memory tool gives you control over storage but requires implementation work. The eight options below are a use-case guide, not a performance ranking: the available documentation does not provide a common benchmark for recall quality, accuracy, or speed.
What counts as memory for Claude?
“Memory” can mean several different things: preferences carried between chats, information scoped to an individual user or project, files an agent searches when needed, or a developer’s system for storing and retrieving context. Those approaches have different setup and data-control requirements, so the right choice depends on who will configure the system and where its data should live.
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The list is ordered by practical fit: start with Claude’s own feature, then consider documented Claude connectors, followed by developer tools. That order does not claim that one option remembers more accurately or performs better than another.
Which Claude memory tool fits your use case?
| Option | Type | Best fit |
|---|---|---|
| Claude built-in memory | In-product feature and transfer flow | People who want the least setup |
| Mem0 | Hosted connector | People who want a separate, user-scoped memory service |
| Zep Context | Project-based connector and MCP service | Technical users or teams that need project administration |
| Anthropic API memory tool | Developer API primitive | Builders who want to choose and manage their own storage |
| Letta | Developer framework | Builders evaluating stateful agents |
| Cognee | Developer memory product | Builders exploring memory infrastructure |
| claude-mem | Open-source project | Claude Code users evaluating persistent context |
| Supermemory | Memory API | Builders evaluating an API-based approach |
1. Claude’s built-in memory and transfer
Choose this first if you want to use Claude’s own memory experience rather than connect another service. Anthropic’s help article, dated September 2, 2026, says memory imports are available on the web and Claude Desktop for Free, Pro, Max, and Team plans. It also documents exporting Claude memory for backup or migration and importing memories from other AI providers. See Anthropic’s memory import and export instructions.
#1 Best Overall
Menus can differ: Anthropic notes that a newer memory experience and a legacy experience coexist for some Team and Enterprise organizations. Follow the instructions applicable to your account rather than assuming every organization has the same controls.
2. Mem0 for Claude
Mem0 is a clear option if you want a hosted memory connector with operations beyond simply adding a note. Anthropic’s Mem0 connector listing describes persistent memory across sessions, scoped per user, agent, or session, with the ability to store, search, update, and forget information.
Mem0’s MCP documentation says its server is hosted over HTTPS and that memories are stored in a Mem0 account, not on the user’s computer. It documents setup for Claude Desktop and Claude Code, along with tools to add, search, retrieve, update, and delete memories. Because the service holds the memory, check its current account and data-handling terms before connecting sensitive information.
3. Zep Context plugin and MCP
Zep is aimed at users willing to configure a project and its access model. Its client setup guide describes a Context plugin that combines an MCP connection with a skill instructing the assistant when to search for or save durable information. Setup includes project configuration and work-email authentication through Google Workspace or a custom identity provider.
The guide describes separate plugin and direct-MCP rollout paths. On the direct path, the skill is separate from the MCP endpoint. Zep says the assistant skips ephemeral chat and uses tools to save durable facts; this should not be read as automatic ingestion of every conversation. Its Context MCP documentation says users can search their own graph and add memory when project settings allow writes. It documents both managed-cloud and bring-your-own-cloud deployments.
4. Anthropic API memory tool
This is a building block for developers, not a ready-to-use consumer memory app. Anthropic’s API documentation describes a persistent /memories directory: Claude requests file operations, and the application runs a handler and returns the results. The application chooses the storage backend, which may be files, a database, cloud storage, or encrypted files.
That flexibility also means the application developer is responsible for the handler and its data practices. Anthropic’s explicit safety requirement is: “Your handler must reject paths outside /memories.” Restricting operations to that directory is part of implementing the tool safely; enabling the tool alone does not provision a managed memory database.
5. Letta
Letta’s stateful-agent documentation covers agents that maintain state and memory concepts. It is a candidate for developers exploring agent architecture, but the cited documentation does not establish a ready-made consumer connector for Claude or a comparison against the options above.
Best Value
6. Cognee
Cognee’s documentation describes a developer-oriented AI memory product. The cited landing page does not establish a Claude-specific end-user connector or comparative performance, so treat it as a framework to evaluate for a project rather than a plug-in alternative for ordinary Claude chats.
7. claude-mem
The claude-mem project README describes capturing agent activity, compressing it, and injecting relevant context into later sessions; it lists Claude Code among its supported clients. These are project descriptions, not independent tests of how complete or useful the retrieved context will be.
8. Supermemory
Supermemory’s documentation identifies a memory API for developers. The cited material does not establish a ready-made consumer integration for Claude or a head-to-head result, so consider it when you are building an application and can verify the current API’s compatibility and setup for your use case.
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How to choose without a misleading “best” score
There is no shared benchmark in the cited documentation that establishes which option recalls information most accurately, responds fastest, or handles more memory. Instead, decide based on who needs the feature and who controls the data.
- For personal use with minimal configuration: begin with Claude’s built-in feature and transfer flow.
- For a hosted connector: compare Mem0’s account-based storage and user, agent, or session scopes with Zep’s project setup and identity controls.
- For a team or technical deployment: check who can connect, whether writes are enabled, and which deployment model the service supports.
- For an application you are building: choose between an API primitive that leaves storage decisions to your application and a developer product whose current integration and operating model you can verify.
- For sensitive information: understand the service account, project permissions, storage location, and applicable data-handling terms before saving it.
What to verify before connecting a service
Connector availability, plan entitlements, and setup instructions can change. Confirm the current instructions for your Claude client and account, especially if you use an organization-managed plan. For a hosted service, identify where memory is stored and what account or project controls access. For an API-based implementation, review the handler’s allowed paths and how the application stores and deletes data. These checks matter more than an unsupported claim that a tool is universally “best.”
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