Letta vs Supermemory

Letta is freemium — a usable free tier with paid plans above it. Supermemory is freemium — a usable free tier with paid plans above it. Both are listed under Agent Memory & RAG-as-a-Service, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.

Letta vs Supermemory — straight answers

Letta vs Supermemory: what is the difference?

Letta is freemium — a usable free tier with paid plans above it and is listed for free BYOK plan supporting up to 3 stateful agents. Supermemory is freemium — a usable free tier with paid plans above it and is listed for free monthly usage allowance plus a Supermemory MCP server. Both sit in Agent Memory & RAG-as-a-Service.

Is Letta or Supermemory cheaper to start with?

Neither — Letta and Supermemory are both freemium, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.

Which should I choose, Letta or Supermemory?

Choose Letta if you need free BYOK plan supporting up to 3 stateful agents; choose Supermemory if you need free monthly usage allowance plus a Supermemory MCP server. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.

Letta compared with Supermemory: pricing tier, category, listed capabilities and links.
 LettaSupermemory
Pricing tierFree tier + paid plansFree tier + paid plans
Free to startYesYes
CategoryAI Agents & AutomationAI Agents & Automation
TypeAgent Memory & RAG-as-a-ServiceAgent Memory & RAG-as-a-Service
Listed capabilities
  • 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
  • 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
Tagsstateful agents, agent memory framework, letta cloud, mcp memory server, open source agents, freememory layer, ai agent memory, personal knowledge graph, mcp memory, context api, free
Websiteletta.comsupermemory.ai
Full pageLetta details →Supermemory details →
AlternativesLetta alternatives →Supermemory alternatives →

Mem0

Agent Memory & RAG-as-a-Service
freemium
  • 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

Ragie

Agent Memory & RAG-as-a-Service
freemium
  • 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

Zep

Agent Memory & RAG-as-a-Service
freemium
  • 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