Mem0 vs Zep: Which is Better in 2026?
Choosing between Mem0 and Zep? Both are popular ai agent memory tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.
Quick verdict
Both are solid ai agent memory options. Mem0 is cheaper to start, but the right choice depends on the specific features and integrations you need.
Mem0 vs Zep — Side by Side
| Mem0 | Zep | |
|---|---|---|
| Category | AI Agent Memory | AI Agent Memory |
| Pricing | Free · paid from $19/mo | Free · paid from $125/mo |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Rating | 4.6 | 4.5 |
| Best for | AI Agent Memory — open-source, long-term-memory | AI Agent Memory — knowledge-graph, temporal |
Pros & Cons
- Apache-2.0 with the largest community in the category
- Drops into an existing agent as a library
- Cheap managed tiers from $19/month
- Graph memory is Pro-only ($249/month) on the platform
- Benchmark figures are self-reported
- Retrieval caps on low tiers are tight
- Temporal graph: knows when facts changed
- Retrieval does not consume credits
- Open-source engine (Graphiti) underneath
- Paid tiers start at $125/month
- SOC 2 and HIPAA only on Enterprise
- Community Edition deprecated; self-host means Graphiti
Key Features Compared
Mem0
- 50K add requests / month
- 5K retrieval requests / month
Zep
- 50K credits / month
- $25 per extra 10K credits
- 600 requests / min
Choose Mem0 if…
- You want a free tier to validate before paying.
- Budget is tight — paid plans start lower ($19/mo vs $125/mo).
- Apache-2.0 with the largest community in the category
- Drops into an existing agent as a library
Choose Zep if…
- You want a free tier to validate before paying.
- Temporal graph: knows when facts changed
- Retrieval does not consume credits
- Open-source engine (Graphiti) underneath
Frequently Asked Questions
Is Mem0 better than Zep?⌄
Both are solid ai agent memory options. Mem0 is cheaper to start, but the right choice depends on the specific features and integrations you need.
What is the difference between Mem0 and Zep?⌄
Mem0 — Open-source (Apache-2.0) memory layer for AI agents: remembers users, sessions and agent state across conversations. Self-host or use the managed platform. Zep — Managed context-graph memory for agents, built on the open-source Graphiti engine: tracks how facts change over time. SOC 2 Type II on Enterprise. Both are ai agent memory tools; the comparison table above breaks down pricing, free tiers, and what each is best for.
Mem0 vs Zep: which is cheaper?⌄
Mem0 pricing: Free · paid from $19/mo. Zep pricing: Free · paid from $125/mo. Confirm current pricing on each tool's official site, as plans change.
Which is rated higher, Mem0 or Zep?⌄
In our catalog, Mem0 rates 4.6 out of 5 and Zep rates 4.5 out of 5, so Mem0 has a slight edge on reviews.
See more options in our guide to the best ai agent memory tools for startups.
In-depth guideBest AI Agent Memory 2026: Mem0 vs Zep vs Cognee vs SupermemoryYour agent forgets everything when the chat ends. Two open-source memory layers and two managed services compared on how they store memory, what they cost for 1,000 users, and why every vendor claims the top benchmark score.Still not sure which to pick?
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