Mem0 vs Zep: Memory Layer Comparison
Compare Mem0 and Zep side by side. Both are tools in the Memory Layer category.
Updated March 10, 2026
The short answer
Choose Mem0 if strong backing: USD 24M from top VCs including YC and Peak XV.
Choose Zep if aI memory purpose-built.
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Quick Comparison
| Category | Memory Layer | Memory Layer |
| Pricing | Freemium | Open Source |
| Best For | Developers building AI agents that need to remember user context across sessions | Developers building conversational AI that needs structured memory and dialog management |
| Website | mem0.ai | getzep.com |
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Pros & Cons: Mem0 vs Zep
- +Strong backing: USD 24M from top VCs including YC and Peak XV
- +80,000+ developers and AWS Agent SDK exclusive provider
- +Free tier with 10,000 memories enables thorough evaluation
- +Both cloud and self-hosted deployment options
- −Graph memory only on expensive USD 249/month Pro plan
- −Significant price jump from USD 19 to USD 249 for advanced features
- −Relatively new company (2023) with limited long-term track record
- −Free tier 1,000 retrieval calls may be restrictive for evaluation
- +AI memory purpose-built
- +100k free messages
- +Self-hosted option
- −Message limits
- −Scaling costs
Pricing: Mem0 vs Zep
- · 10,000 memories
- · 1,000 retrieval calls/month
- · Vector memory
- · Cloud hosted
- · 50,000 memories
- · Unlimited retrieval
- · Vector memory
- · Email support
- · Unlimited memories
- · Graph memory
- · Advanced features
- · Priority support
- · Self-hosted option
- · Custom integrations
- · SLA guarantees
- · Dedicated support
- · Core features
- · Advanced features
- · Custom
When to Choose Mem0 vs Zep
- Personalized AI assistants that remember users
- Agent learning from past interactions
- Customer support with conversation history
- Enterprise AI assistants with memory
- Customer service bots that remember past issues
- Personalized recommendation agents
About Mem0
Mem0 is a Y Combinator-backed memory layer for AI applications founded in 2023 by Taranjeet Singh (ex-Khatabook first growth engineer) and Deshraj Yadav (ex-Tesla Autopilot AI Platform lead). Launched in January 2024, Mem0 raised USD 24 million including USD 3.9 million in seed funding and USD 20 million Series A led by Basis Set Ventures, with participation from Kindred Ventures, Y Combinator, Peak XV Partners, and GitHub Fund. The company serves over 80,000 developers and provides the exclusive memory provider for AWS new Agent SDK. Mem0 offers a free tier with 10,000 memories and 1,000 retrieval calls per month, Pro plans at USD 19-249/month with different memory limits, and custom Enterprise pricing. The platform supports both cloud-hosted and self-hosted deployment options. Graph memory capabilities are only available on Pro plans (USD 249/month) or higher. Mem0 specializes in persistent memory for LLM applications, enabling AI systems to remember context across interactions for improved personalization and continuity.
About Zep
Zep provides long-term memory for AI applications. Vector search and fact extraction for persistent context.
What is Memory Layer?
Tools and frameworks for adding persistent, long-term memory to AI agents and LLM applications. These systems manage conversation history, user preferences, and learned context across sessions, enabling more personalized and context-aware AI interactions.
Browse all Memory Layertools →Other Memory Layer Tools
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