Agent Memory & RAG-as-a-Servicefree

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 397 entries on Flocci AI Tools with no upgrade path built in.

Can I use Cognee in a browser, or is there an app?

Cognee needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on self-hosting, an API and the web.

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?

MemOS is the closest free alternative: it sits in the same Agent Memory & RAG-as-a-Service sub-category and is free. RAGFlow, Basic Memory and Graphiti 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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RAGFlow

Agent Memory & RAG-as-a-Service
free
  • 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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LightRAG

Agent Memory & RAG-as-a-Service
free
  • Simple, fast graph-based RAG from HKU Data Science lab (EMNLP 2025)
  • Combines knowledge-graph and vector retrieval
  • Works with local or hosted LLMs
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Head-to-head comparisons

Cognee vs Mem0Cognee vs ZepCognee vs SupermemoryCognee vs LettaCognee vs RAGFlowCognee vs LightRAG