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Cognee

Open-source memory platform that turns data into a knowledge graph plus vectors for agents

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What Cognee does

  • Open-source memory platform that turns data into a knowledge graph plus vectors for agents
  • Python API with pluggable graph, vector and relational stores
  • Self-host free; cloud option exists

Cognee — straight answers

What is Cognee?

Cognee is listed under Agent Memory & RAG-as-a-Service, in the AI Agents & Automation category on Flocci AI Tools. Open-source memory platform that turns data into a knowledge graph plus vectors for agents. It is free, with no paid plan attached, and it lives at cognee.ai.

Is Cognee free?

Cognee is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 399 entries on Flocci AI Tools with no upgrade path built in.

What can Cognee do?

Cognee does 3 things the catalog singles out: Open-source memory platform that turns data into a knowledge graph plus vectors for agents; python api with pluggable graph, vector and relational stores; self-host free; cloud option exists.

What is the best free alternative to Cognee?

Basic Memory is the closest free alternative: it sits in the same Agent Memory & RAG-as-a-Service sub-category and is free. Graphiti, LightRAG and MemOS also start free. The full list is on the alternatives page.

See the full list →

Cognee alternatives

Compare all 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
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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
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Supermemory

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

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

Agent Memory & RAG-as-a-Service
freeNew
  • Open-source RAG engine with deep document parsing and agent workflows
  • Grounded citations and template-based chunking
  • Self-host with Docker; bring your own LLM
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Head-to-head comparisons

Cognee vs Mem0Cognee vs ZepCognee vs SupermemoryCognee vs LettaCognee vs RagieCognee vs RAGFlow