Mem0
Agent Memory & RAG-as-a-Service
- Free Hobby tier: unlimited end users, 10K add / 1K retrieval requests/month
- Graph memory and entity linking for agent context
- Open-source core plus managed cloud API
AI Agents & Automation (5)
All 5 AI agent memory and RAG services in the Flocci catalog, 5 of them free or freemium. Pricing tier and real capabilities on every entry — no ads, no sponsored placement.
AllGeneral Autonomous AgentsWorkflow AutomationAgent Frameworks (Developers)Real-Time Voice AgentsBrowser & Computer-Use AgentsMCP EcosystemAgent Memory & RAG-as-a-Service
freemium
Zep
Agent Memory & RAG-as-a-Service
- Free plan: 10,000 monthly credits, 2 projects, 200ms retrieval
- Graph RAG with automated context assembly from chat + business data
- Temporal knowledge graph for tracking how facts change over time
Supermemory
Agent Memory & RAG-as-a-Service
- Free monthly usage allowance plus a Supermemory MCP server
- Native connectors for Google Drive, Notion, OneDrive as memory sources
- Deduplication so repeated content isn't rebilled
Letta
Agent Memory & RAG-as-a-Service
- Free BYOK plan supporting up to 3 stateful agents
- Stateful-agent runtime with persistent memory, desktop app, CLI and API
- Open-source framework (formerly MemGPT) plus a managed cloud
Ragie
Agent Memory & RAG-as-a-Service
- Free Developer plan for personal projects/exploration
- Managed hybrid search, entity extraction and reranking out of the box
- Handles audio/video ingestion billed separately by duration
Agent Memory & RAG-as-a-Service — straight answers
What are the best free AI agent memory and RAG services?
Flocci AI Tools lists 5 AI agent memory and RAG services, ordered free tiers first: Letta, Mem0, Ragie, Supermemory and Zep. All of them are free or have a free tier. Every entry states what it uniquely does, not a score.
Are there completely free AI agent memory and RAG services?
None in this sub-category are fully free, but 5 are freemium with a usable free tier. The Completely Free AI Tools collection lists the 115 entries site-wide that carry no paid plan at all.
See the full list →What should I look for in AI agent memory and RAG services?
Start with what you need to do: give an assistant durable memory across sessions. Then check the pricing tier, because "free" here means no paid plan at all while "freemium" means a free tier under paid plans. Every tool on this page lists both.
See the full list →Looking for a ranked shortlist instead? See the best free AI agent memory and RAG services.