[oleksiibond]

But if what you need is a hosted, managed memory API, which you can plug into your own app, both Mem0 and Zep have great offerings and are more developed along those lines:

- Not local but hosted, meaning the memory will be stored remotely on their servers via an API. - Not directly integrated with your codebase but with the agent itself, which means that memory is automatically injected and captured within Claude Code, Cursor or Codex without any custom code of your own. Their offerings are SDKs which you have to integrate yourself. - Tool agnostic, since it uses MCP, meaning that memory is not tied to one specific app.

Summary: if privacy and "works in my existing agent with no code" is what you care about, go for PMB. If you need a hosted service for your own product, go for theirs.

[Dosik]

It does make sense, but Mem0 is an open-source product and self-hosted as well. Zep also uses OSS as its core, so "local" is not the key point here. Apart from the ease of use brought to you by the MCP injection, is there anything else in the retrieval process that is better than that?

[oleksiibond]

Fair enough, you are correct that both can be self-hosted, and thus "local" by itself is not the moat. And I do not want to make claims about being able to beat them in recall, since I have no benchmark to compare against, and I believe the temporal graph of Zep is powerful.

Two things that do make it different from their solutions:

1. An adaptive per-project lexicon that is created from your own memories and adjusts the weighting to give more relevance to your project's lexicon. It focuses on one codebase only. I have never seen that in both.

2. Memories are rule-aware: "lesson" is a first-class citizen, and the retrieval process tries to show the rule rather than the event where it was applied and whether the rule was followed.

Thus, the advantage is in project specialization and rule awareness.