Zep

service active freemium

A memory layer for AI assistants and agents. Zep provides long-term memory, conversation history management, and user context for LLM applications. It automatically extracts facts, summarizes conversations, and enables semantic search over past interactions.

Implements

Concepts this tool claims to implement:

  • Long-Term Memory primary

    Persistent memory storage with automatic fact extraction. Entity recognition and relationship tracking. Memory retrieval based on relevance and recency.

  • Agent Memory primary

    Conversation history with summarization. Session management for tracking user interactions. Memory injection into prompts.

  • Semantic Memory primary

    Semantic search over conversation history. Vector embeddings for memory retrieval. Fact and entity extraction from conversations.

  • Episodic Memory secondary

    Conversation sessions as episodes. Temporal ordering of interactions. Session-based memory organization.

Integration Surfaces

  • Python SDK
  • TypeScript SDK
  • REST API
  • LangChain integration
  • LlamaIndex integration

Details

Vendor
Getzep Inc.
License
Apache-2.0 (OSS) / Proprietary (Cloud)
Runs On
cloud, local
Used By
system, agent

Links

Notes

Zep focuses on being a drop-in memory layer rather than a full agent framework. Integrates with existing stacks (LangChain, LlamaIndex). Open-source version can be self-hosted, cloud version adds more advanced features. Good for adding memory to existing applications.

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