Mem0
Mem0 is an open-source memory layer for AI agents that extracts facts from conversations in a single add-only pass, links entities across memories and retrieves them in later sessions, with an Apache-2.0 SDK and a managed platform.
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About Mem0
Mem0 is listed in our memory & RAG category and is aimed at builders. Mem0 is an open-source memory layer for AI agents that extracts facts from conversations in a single add-only pass, links entities across memories and retrieves them in later sessions, with an Apache-2.0 SDK and a managed platform. Pricing, as the maker states it: Open source SDK (Apache-2.0); managed platform: Hobby free, Starter $19/mo, Pro $249/mo, Enterprise custom. Maturity: Mature. We last checked the official link on 2026-10-20.
What is Mem0?
Mem0 is a memory layer for AI agents. Its current algorithm uses single-pass, add-only extraction (one LLM call; memories accumulate and nothing is overwritten), treats agent-generated facts as first-class and links entities across memories for retrieval.
It is open source with a paid managed platform; Mem0 notes its published benchmarks reflect the managed platform, which includes optimizations not in the open-source SDK.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: mem0.ai.
Who is Mem0 for?
Developers who want agents to remember users and facts across sessions.
Mem0 at a glance
- Open source: Yes (Apache License 2.0)
- GitHub: mem0ai/mem0 · 67,572 stars (as of Oct 21, 2026)
Key features
- Add-only memory extraction
- Agent-generated facts stored
- Entity linking
- Open-source SDK plus managed platform
Mem0 pricing
- Hobby: Free
- Starter: $19/mo
- Pro: $249/mo
- Enterprise: Custom
Source: official pricing page, checked Oct 18, 2026. Prices change; check the source before buying.
Mem0 FAQ
What is Mem0?
Mem0 is a memory layer for AI agents. Its current algorithm uses single-pass, add-only extraction (one LLM call; memories accumulate and nothing is overwritten), treats agent-generated facts as first-class and links entities across memories for retrieval.
Who is Mem0 for?
Developers who want agents to remember users and facts across sessions.
Is Mem0 free?
Yes. Mem0 has a free option (Hobby), according to its pricing page (checked Oct 18, 2026).
How much does Mem0 cost?
As of Oct 18, 2026, Mem0's official pricing page lists: Hobby: Free; Starter: $19/mo; Pro: $249/mo; Enterprise: Custom.
Is Mem0 open source?
Yes. Mem0 is released under the Apache License 2.0, according to its GitHub repository.
What are alternatives to Mem0?
Similar tools include Beacon, Hy-Memory, SimpleMem, Memgraph, projectmem and ktx.
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