tools
Mem0 Review 2026 — Open-Source Persistent Memory Layer for AI Applications
Mem0 gives any LLM persistent memory across conversations. Open-source, vector + graph storage, works with OpenAI, Anthropic, Ollama. Free Apache 2.0 license.
Mem0 is a memory layer for AI agents and applications. It extracts durable facts from conversations, updates memories as information changes, and retrieves relevant context for later responses.
Developers use it for customer support, personal assistants, coding agents, healthcare workflows, education, and sales systems. Mem0 is infrastructure rather than a standalone chatbot or language model; hosted plans have request limits, while self-hosting and advanced enterprise features may require additional setup or cost.
Features
- Stores and retrieves persistent memories across sessions and agents
- Extracts durable facts and updates memories from conversations
- Supports user, session, agent, and project memory scopes
- Provides semantic, keyword, entity, and temporal retrieval
- Offers graph memory for entity linking on Pro and Enterprise
- Dream consolidates duplicates, outdated facts, and recurring behavior
- Provides Python and Node.js SDKs, API access, and a CLI
- Open-source SDK licensed under Apache 2.0
Use cases
- Build support agents that remember customer history and preferences
- Create assistants that retain context between conversations
- Give coding agents memory of repositories, conventions, and prior decisions
- Personalize tutoring with student progress and learning preferences
- Track patient history and treatment preferences across visits
- Maintain sales context across long customer relationships
Pros
Cons
Pricing
- Starting price
- Free
- Pricing checked
- 2026-09-19
Hobby
Free
- Unlimited end users
- 10,000 add requests/ month
- 1,000 retrieval requests/ month
- 1 project
- Community support
Starter
$19/month
- Unlimited end users
- 50,000 add requests /month
- 5,000 retrieval requests / month
- 1 project
- Community support
Pro
$249/month
- Unlimited end users
- 500,000 add requests /month
- 50,000 retrieval requests /month
- Unlimited projects
- Multiproject support
- Private Slack support
- Advanced analytics
- Graph memory (entity linking)
Enterprise
Custom
- Unlimited end users
- Unlimited add requests
- Unlimited retrieval requests
- Unlimited projects
- SLA support
- On-prem deployment
- Audit logs
- Custom integrations & SSO