kitio.aiMem0 vs Zep
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Mem0 has the lower starting price: about $19 a month, against $125 for Zep.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Automatic fact extraction
- Vector and graph memory
- Python and JS SDKs
- Framework integrations
- Self-hosting
- Temporal knowledge graph
- Entity extraction
- Context assembly
- Graphiti open source
- Python, TS and Go SDKs
| Feature | Mem0 | Zep |
|---|---|---|
| Best for | Memory layer that gives AI agents long-term recall of users | Context engineering platform with temporal knowledge graph memory |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $19/mo | $125/mo |
| Free plan | Yes | Yes |
| Made by | Mem0 | Zep AI |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Mem0 has the lower starting price: about $19 a month, against $125 for Zep.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Hobby
Free
- 10K add requests per month
- 1K retrieval requests per month
Starter
$19/mo
- 50K add requests per month
- 5K retrieval requests per month
- Unlimited end users
Pro
$249/mo
- 500K add requests per month
- 50K retrieval requests per month
- Graph memory and analytics
- Multiple projects
Enterprise
Contact sales
- On-prem deployment
- SSO and audit logs
- SLA support
3 plans
Flex
$125/mo
- 50,000 credits/mo, then $25/10K
- 600 requests per minute
- 5 projects
- Unlimited memories and users
Flex Plus
$375/mo
- 200,000 credits/mo, then $75/40K
- 1,000 requests per minute
- 10 projects
- HIPAA BAA
Enterprise
Custom
- Custom credits, negotiated rates
- Zep Cloud or your VPC
- Guaranteed rate limits with SLA
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Mem0
- Simple to add to agents
- Cuts context token costs
- Open-source option
- Graph memory on paid tiers
- Extraction adds latency
- Memory quality depends on prompts
Zep
- Tracks how facts change
- Open-source graph engine
- Good for business data
- Hosted platform is cloud only
- Graph concepts take learning
- Credit pricing needs tracking
Which one should you choose?
Choose Mem0 if you want:
- Simple to add to agents
- Cuts context token costs
- Open-source option
Watch out: graph memory on paid tiers.
Choose Zep if you want:
- Tracks how facts change
- Open-source graph engine
- Good for business data
Watch out: hosted platform is cloud only.
Mem0 vs Zep FAQ
What is the difference between Mem0 and Zep?
Mem0: Memory layer that gives AI agents long-term recall of users. Zep: Context engineering platform with temporal knowledge graph memory. Both are models & apis tools.
Is Mem0 or Zep cheaper?
Mem0 has the lower starting price: about $19 a month, against $125 for Zep.
Do Mem0 and Zep have free plans?
Mem0: Yes. Zep: Yes.
Who makes Mem0?
Mem0 is made by Mem0, based in United States.
Who makes Zep?
Zep is made by Zep AI, based in United States.
Which should I choose, Mem0 or Zep?
Choose Mem0 if you value simple to add to agents and cuts context token costs. Choose Zep if you value tracks how facts change and open-source graph engine.