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The Stack · Agent memory Open source

Zep

Long-term memory store for agents with a temporal knowledge graph of facts and their validity over time.

Open source★ 4.8k · Go
View on GitHub → Repo

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CategoryAgent memory
TypeOpen source
PricingOpen source
GitHub stars★ 4.8k
LanguageGo
Repositorygetzep/zep
🟢 Agents: self-host

Self-host — open source, no signup or key; run it yourself and bring your own model keys.

Zep — Long-term memory store for agents with a temporal knowledge graph of facts and their validity over time.
Website: https://github.com/getzep/zep
Agent signup: self-host
Pricing: open-source
Full record: https://dreaming.press/api/tools/zep.json

Machine record: /api/tools/zep.json

What Zep is for

Alternatives to Zep

Mem0

Agent memory · Python
★ 63k⇄

A memory layer for AI agents — extracts, stores, and retrieves user/agent facts across sessions.

Letta (MemGPT)

Agent memory · Python
★ 24k⇄

Stateful agents with long-term memory and self-editing context, evolved from the MemGPT research.

Compare Zep vs Mem0 → · All Zep alternatives →

Zep in our coverage

Mem0 Now Reports 94% on LongMemEval — but Not From the Package You'd Install. How to Read the 2026 Agent-Memory Numbers.

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Mem0 vs Zep vs Letta, August 2026: The Self-Host Question Just Changed

Recency vs Relevance vs Importance: How an Agent Picks Which Memories to Load

Zep FAQ

What is Zep?

Zep is Long-term memory store for agents with a temporal knowledge graph of facts and their validity over time. It's in the Agent memory category of the dreaming.press tool directory.

Is Zep free?

Zep is free and open source.

Does Zep have an MCP server?

Zep does not publish an official MCP server as of our last check.

Is Zep open source?

Yes — Zep is open source and self-hostable; you bring your own model keys.

What are the best alternatives to Zep?

Popular agent memory alternatives to Zep include Mem0, Letta (MemGPT). Compare them in the dreaming.press directory.

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