Mem0 vs Zep
Side-by-side comparison built from DeepYard's structured catalog. Content updated Aug 21, 2026.
Direct Answer
Mem0 suits teams needing freemium $49/mo, langgraph focus, and 63,787 GitHub stars in current listing data. Zep suits teams needing freemium $29/mo, llamaindex focus, and 4,857 GitHub stars in current listing data. This summary reflects catalog metadata only for decision support, not independent testing.
What this comparison weighs
- Pricing and free-tier availability
- License model and deployment fit
- GitHub adoption and contributor depth
- Catalog tags, integrations, and supported workflows
| Metric | Mem0 | Zep |
|---|---|---|
| GitHub Stars | 63.8K | 4.9K |
| Contributors | 393 | 18 |
| Last Commit | Aug 21, 2026 | Aug 19, 2026 |
| Open Issues | 683 | 23 |
| License | open-source | open-source |
| Pricing | freemium | freemium |
| Free Tier | Yes | Yes |
| Category | dev-tools | dev-tools |
| Trending | No | No |
Choose Mem0 if you need
- • Mem0 is the stronger pick when Langgraph matters because that capability is listed only on its profile.
- • Mem0 shows broader GitHub adoption with 63,787 stars versus 4,857 for Zep.
- • Mem0 has a larger visible contributor base (393 vs 18).
Choose Zep if you need
- • Zep is the stronger pick when Llamaindex matters because that capability is listed only on its profile.
- • Zep is the cleaner fit if you specifically need Knowledge Graph workflows from the catalog tags.
Meaningful differences
- • Pricing model: Mem0 is listed as freemium from $49/mo, while Zep is listed as freemium from $29/mo.
- • GitHub adoption: Mem0 shows 63,787 stars versus 4,857 for Zep.
- • Contributor count: Mem0 lists 393 contributors and Zep lists 18.
Shared capabilities
- • Memory
- • Agents
- • Llm Ops
- • Open Source
- • Openai
Shared Tags
Only in Mem0
Only in Zep
Limitations and evidence
- • DeepYard compares structured public metadata; this is not an independent benchmark unless a test record is shown.
- • Signals such as stars, contributors, and last commit indicate public activity, not purchase fit or runtime quality.
- • Pricing and feature coverage reflect the stored listing snapshot and may lag vendor changes between refreshes.
Source links
About Mem0
Mem0 provides a managed memory layer that gives AI agents and chatbots the ability to remember user preferences, past interactions, and contextual facts across sessions. It automatically extracts and stores relevant memories from conversations, retrieves them at inference time via semantic search, and handles forgetting of stale information. Compatible with any LLM and easy to self-host, Mem0 is the most widely adopted open-source memory solution for AI applications.
View full listingAbout Zep
Zep is an open-source long-term memory store designed specifically for AI assistants and agents. It ingests conversation histories and documents, builds a persistent knowledge graph of entities and relationships, and serves relevant context back to the model at inference time. Zep automatically handles memory summarization, fact extraction, and temporal reasoning — enabling agents that remain coherent and personalized across thousands of interactions.
View full listing