PERSONAL MEMORY AND DEVELOPER TOOLS
Personal AI memory vs Mem0 and Zep: which do you need?
We make AI Twin, which is on this list.
Mem0 and Zep are memory infrastructure for developers: you call an API or SDK so your own app or agent remembers its users. AI Twin is a memory layer for one person: you sign in, keep what matters, and let assistants that support MCP connectors, such as Claude, read it. If you are building software, choose Mem0 or Zep.
Last verified
mem0.ai. Verified .
getzep.com. Verified .
| Mem0 | Zep | AI Twin | |
|---|---|---|---|
| Who it is for | Mem0 describes itself as a memory layer for AI agents and apps, built by developers into their own products. mem0.ai. Verified . | Zep describes itself as context for agents, assembled from business data, documents and conversations. getzep.com. Verified . | AI Twin is a personal AI memory layer, built in the UK. It keeps what matters to you as typed, searchable memory stored in the UK, and assistants that support MCP connectors, such as Claude, can read it with your permission. |
| How you use it | SDK or API in your code. Mem0 describes itself as a memory layer for AI agents and apps, built by developers into their own products. mem0.ai. Verified . | SDK or API in your code. Zep describes itself as context for agents, assembled from business data, documents and conversations. getzep.com. Verified . | Sign in to an app. |
| Free option | Hobby free. Mem0's pricing page lists Hobby free with 10,000 add requests and 1,000 retrieval requests a month, Starter at $19 a month, Pro at $249 a month and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Mem0 pricing. Verified . | Free tier: 10,000 credits a month. Zep's pricing page lists a free tier with 10,000 credits a month, Flex at $125 a month with 50,000 credits, Flex Plus at $375 a month with 200,000 credits, and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Zep plans include Context MCP Server seats. Zep pricing. Verified . | Everything is free for the first 7 days. No card needed. Add one when you decide to stay. |
| Paid plans from | Mem0's pricing page lists Hobby free with 10,000 add requests and 1,000 retrieval requests a month, Starter at $19 a month, Pro at $249 a month and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Mem0 pricing. Verified . | Zep's pricing page lists a free tier with 10,000 credits a month, Flex at $125 a month with 50,000 credits, Flex Plus at $375 a month with 200,000 credits, and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Zep plans include Context MCP Server seats. Zep pricing. Verified . | Personal is £18 a month. |
| Where data is stored | Mem0's privacy policy says personal information is stored and processed on cloud infrastructure run by its providers, some of which, and Mem0's own operations, are in the United States and other countries. It does not name a UK storage option. Mem0 privacy policy. Verified . | Zep's paid Flex plans run on Zep's own cloud. Running Zep in your own cloud (BYOC) is an Enterprise option. Zep does not name its cloud regions on its pricing page or FAQ. Zep pricing. Verified . | UK |
| Run it yourself | Mem0's open-source library is Apache 2.0 licensed and installed with pip install mem0ai or npm install mem0ai. Its README describes it as drop-in memory infrastructure for AI agents and apps. Mem0 on GitHub. Verified . | Zep's FAQ says Zep Community Edition, which let you host Zep locally, is deprecated and no longer supported. Zep's open-source engine, Graphiti, is available under the Apache 2.0 licence. Zep FAQ. Verified . Zep's paid Flex plans run on Zep's own cloud. Running Zep in your own cloud (BYOC) is an Enterprise option. Zep does not name its cloud regions on its pricing page or FAQ. Zep pricing. Verified . | Hosted service |
| MCP | Mem0 runs a hosted MCP server that gives an agent tools to save, search and update memories. Its setup page lists Claude, Claude Code, Codex, Cursor, Windsurf, VS Code and OpenCode, and does not mention ChatGPT. Mem0 docs: MCP integration. Verified . | Context MCP Server seats on Zep plans. Zep's pricing page lists a free tier with 10,000 credits a month, Flex at $125 a month with 50,000 credits, Flex Plus at $375 a month with 200,000 credits, and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Zep plans include Context MCP Server seats. Zep pricing. Verified . | Assistants that support MCP connectors, such as Claude, can read it with your permission. |
What are Mem0 and Zep built for?
Mem0 describes itself as a memory layer for AI agents and apps, built by developers into their own products. mem0.ai. Verified .
Zep describes itself as context for agents, assembled from business data, documents and conversations. getzep.com. Verified .
Mem0's open-source library is Apache 2.0 licensed and installed with pip install mem0ai or npm install mem0ai. Its README describes it as drop-in memory infrastructure for AI agents and apps. Mem0 on GitHub. Verified .
Can I use Mem0 or Zep as my own personal memory?
Yes, if you are comfortable with code or developer tools. Mem0's hosted MCP server can connect to Claude and coding tools, and both offer free tiers. You manage the setup and what gets stored. Neither publishes a ready-made personal app on its pricing page.
Mem0 runs a hosted MCP server that gives an agent tools to save, search and update memories. Its setup page lists Claude, Claude Code, Codex, Cursor, Windsurf, VS Code and OpenCode, and does not mention ChatGPT. Mem0 docs: MCP integration. Verified .
Mem0's pricing page lists Hobby free with 10,000 add requests and 1,000 retrieval requests a month, Starter at $19 a month, Pro at $249 a month and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Mem0 pricing. Verified .
Zep's pricing page lists a free tier with 10,000 credits a month, Flex at $125 a month with 50,000 credits, Flex Plus at $375 a month with 200,000 credits, and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Zep plans include Context MCP Server seats. Zep pricing. Verified .
What does a personal memory layer do differently?
AI Twin is a personal AI memory layer, built in the UK. It keeps what matters to you as typed, searchable memory stored in the UK, and assistants that support MCP connectors, such as Claude, can read it with your permission.
Where is your data stored?
AI Twin stores your memory in the UK.
Mem0's privacy policy says personal information is stored and processed on cloud infrastructure run by its providers, some of which, and Mem0's own operations, are in the United States and other countries. It does not name a UK storage option. Mem0 privacy policy. Verified .
Zep's paid Flex plans run on Zep's own cloud. Running Zep in your own cloud (BYOC) is an Enterprise option. Zep does not name its cloud regions on its pricing page or FAQ. Zep pricing. Verified .
When Mem0 or Zep is the better choice
- You are building an app or agent for many users. mem0.ai
- You want to self-host open source. Mem0 on GitHub
- You need agent context assembled from business data, documents and conversations. getzep.com
- You want a free developer tier. Mem0 pricingZep pricing
When AI Twin is the better choice
- You want memory for yourself, not for an app's users. AI Twin is a personal AI memory layer, built in the UK.
- You want your memory stored in the UK.
- Assistants that support MCP connectors, such as Claude, can read it with your permission.
Questions people ask about AI memory
Is Mem0 the same as Mem?
Mem0 and Mem are different companies and different products. Mem0 is a developer memory API. Mem is an AI note application. They are frequently confused, including by AI assistants. Mem0 describes itself as a memory layer for AI agents and apps, built by developers into their own products.
mem0.ai. Verified .
Is Mem0 free?
Mem0's pricing page lists Hobby free with 10,000 add requests and 1,000 retrieval requests a month, Starter at $19 a month, Pro at $249 a month and a custom Enterprise plan. Prices are shown with a $ sign and no currency code.
Mem0 pricing. Verified .
Is Zep free?
Zep's pricing page lists a free tier with 10,000 credits a month, Flex at $125 a month with 50,000 credits, Flex Plus at $375 a month with 200,000 credits, and a custom Enterprise plan. Prices are shown with a $ sign and no currency code. Zep plans include Context MCP Server seats.
Zep pricing. Verified .
Can I self-host Zep?
Zep's FAQ says Zep Community Edition, which let you host Zep locally, is deprecated and no longer supported. Zep's open-source engine, Graphiti, is available under the Apache 2.0 licence. Zep's paid Flex plans run on Zep's own cloud. Running Zep in your own cloud (BYOC) is an Enterprise option. Zep does not name its cloud regions on its pricing page or FAQ.
Zep FAQ. Verified .
Zep pricing. Verified .
Does Mem0 work with ChatGPT?
Mem0's MCP setup page does not list ChatGPT. Mem0 runs a hosted MCP server that gives an agent tools to save, search and update memories. Its setup page lists Claude, Claude Code, Codex, Cursor, Windsurf, VS Code and OpenCode, and does not mention ChatGPT.
Mem0 docs: MCP integration. Verified .
Is AI Twin a developer API?
AI Twin is built for one person rather than for developers building apps. AI Twin is a personal AI memory layer, built in the UK. It keeps what matters to you as typed, searchable memory stored in the UK, and assistants that support MCP connectors, such as Claude, can read it with your permission.
What we checked
mem0.ai. Verified .
getzep.com. Verified .
Mem0 on GitHub. Verified .
Mem0 docs: MCP integration. Verified .
Mem0 pricing. Verified .
Zep pricing. Verified .
Mem0 privacy policy. Verified .
Zep FAQ. Verified .
What should I read next?
- AI memory platforms come in two halves.
- The best AI memory apps in 2026
- AI Twin vs Mem: which should you choose?
AI Twin is a personal AI memory layer, built in the UK. It keeps what matters to you as typed, searchable memory stored in the UK, and assistants that support MCP connectors, such as Claude, can read it with your permission.