PMB vs Zep Memory: Which is Better in 2026?
Choosing between PMB and Zep Memory comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Zep Memory is our overall pick for AI agents workflows. Pick PMB if you need a fully free option.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
PMB
Local-first AI memory for coding agents. Recall context instantly
Best for you if:
- • You need something completely free
- • Open-source, local-first memory for AI coding agents that automatically records and recalls context without cloud dependencies
- • Injects relevant lessons, decisions, and project overview before the agent reasons, using sub-millisecond hybrid recall (BM25 + dense vectors + entity graph)
Zep Memory
Build personalized, fast, and reliable AI agents with comprehensive, evolving memory.
Best for you if:
- • Provides comprehensive, evolving memory for AI agents.
- • Unifies chat history, business data, and user interactions into a temporal knowledge graph.
| At a Glance |  PMB |  Zep Memory |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | AI Agents | AI Agents |
Rating | - | 4.7/5 |
Free plan | Yes | Yes |
Choose PMB or Zep Memory?
Choose PMB if
Local-first AI memory for coding agents. Recall context instantly
- Fully local and open-source (Apache-2.0) — no data leaves your machine, no API keys needed
- Works across multiple AI coding agents (advanced models, Cursor, Zed) without losing context
- Fast hybrid recall (minimal latency) with no LLM call on the read path, keeping latency minimal
- You want a fully free tool (Zep Memory requires payment)
Choose Zep Memory if
Build personalized, fast, and reliable AI agents with comprehensive, evolving memory.
- Significantly improves AI agent accuracy and personalization by providing rich, evolving context.
- Reduces inference costs and response latency by delivering token-efficient and relevant context.
- Integrates diverse data sources (chat, business data, user behavior) into a single knowledge graph.
| Feature | PMB | Zep Memory |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | No ratings yet | ★4.7/5 15 reviews |
| Categories | AI AgentsDeveloper Tools | AI AgentsDeveloper Tools |
In-Depth Analysis
PMB
Local-first AI memory for coding agents. Recall context instantly
Strengths
- +Fully local and open-source (Apache-2.0) — no data leaves your machine, no API keys needed
- +Works across multiple AI coding agents (advanced models, Cursor, Zed) without losing context
- +Fast hybrid recall (minimal latency) with no LLM call on the read path, keeping latency minimal
Weaknesses
- -Requires initial setup and configuration for each agent (though simplified with pmb connect commands)
- -Focused on AI coding agents; may not be designed for general AI assistant memory (e.g., chat bots outside coding)
Key features
Zep Memory
Build personalized, fast, and reliable AI agents with comprehensive, evolving memory.
Strengths
- +Significantly improves AI agent accuracy and personalization by providing rich, evolving context.
- +Reduces inference costs and response latency by delivering token-efficient and relevant context.
- +Integrates diverse data sources (chat, business data, user behavior) into a single knowledge graph.
- +Designed for real-time applications with extremely low retrieval latency (<200ms).
- +Supports custom graph ontologies for domain-specific memory and improved relevance.
Weaknesses
- -No explicit free tier mentioned, suggesting it's a paid solution.
- -Requires integration and setup to connect various data sources.
- -Complexity of managing and defining custom graph ontologies might require some expertise.
Key features
Pricing: PMB vs Zep Memory
| Plan | PMB | Zep Memory |
|---|---|---|
| Tier 1 | N/A | Free Free |
| Tier 2 | N/A | $25/month Flex |
| Tier 3 | N/A | $475/month Flex Plus |
| Tier 4 | N/A | Contact Sales Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on PMB pricing and Zep Memory pricing.
Who Should Use What?
On a budget?
PMB is free. Zep Memory is freemium.
Go with: PMB
Want the highest-rated option?
Zep Memory is rated 4.7/5. PMB has no ratings yet.
Go with: Zep Memory
Value user reviews?
PMB: no ratings yet. Zep Memory: 15 reviews (4.7/5).
Go with: Zep Memory
3 Questions to Help You Decide
What's your budget?
PMB is free. Zep Memory is freemium. Go with PMB if free matters most.
What's your use case?
Both are ai agents tools. Compare their specific features to decide.
How important are ratings?
Zep Memory is rated 4.7/5; PMB has no ratings yet.
Key Takeaways
Zep Memory
- Free tier available
- Our pick for this comparison
PMB
- Completely free
The Bottom Line
Zep Memory is our pick. That said, PMB is free, hard to beat on price.
Frequently Asked Questions
Is PMB or Zep Memory better?
Zep Memory is rated in our evaluation. PMB is free and Zep Memory is freemium.
What are PMB and Zep Memory used for?
PMB: Local-first AI memory for coding agents. Recall context instantly. Zep Memory: Build personalized, fast, and reliable AI agents with comprehensive, evolving memory..
What does PMB cost vs Zep Memory?
PMB is completely free. Zep Memory is freemium (free tier + paid plans). Visit their websites for detailed pricing.