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fractal vs ModelBrain RAG

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

fractal compared with ModelBrain RAG
Detail fractalModelBrain RAG logo ModelBrain RAG
What it doesLong-term memory for AI agents that organizes itself and corrects itself An HTTP document search API for your apps
StageMVP Not given
FoundedNot given Not given
Based inSE US
Pricing modelFree Open source
PricingPersonal: Free during early access. Unlimited memories, all agents with separate memories, no card required. Enterprise: On request, set up by the team for departmental organization with cross-department sharing and direct support. Not given
Key features
  • Self-correcting memory that updates when facts change
  • Historical memory queries with time-based retrieval
  • Automatic topic organization and hierarchy
  • Separate memory for each agent with controlled sharing
  • Multi-agent support via MCP, REST API, or LangGraph
  • AES-256 encryption at rest and in backups
  • OAuth 2.1 authentication and API key management
  • Data export and deletion capabilities
  • 37 MCP tools with automated verification on every code change
  • Search passages that match a query with scores and file references
  • Manage collections and add or remove documents over HTTP or web interface
  • Share vaults and partitions for search-only access
  • API keys with read, write or admin access levels
  • Web interface for search and administration
  • User account management with three access levels
  • Full-text and vector search indexes
  • Runs locally on 127.0.0.1 with no outgoing connections
  • SHA-256 hashed API keys and scrypt hashed passwords
  • Limit lists restrict collections and vaults per user or API key
What makes it different
  • Understands what changed, when it was true, and where it belongs - beyond vector database similarity
  • Never contradicts itself by automatically replacing outdated facts
  • Fully GDPR aligned with built-in privacy by design
  • Two-minute integration with Claude, ChatGPT, Cursor and any MCP client
  • Data stays in Europe on AWS eu-north-1 and never used for model training
  • Runs entirely locally on your computer with no outgoing connections
  • Free and open source with MIT license
  • Does not write answers or contain a language model
  • Shared vaults and partitions are search-only and cannot be modified
  • Integrates with any language model of your choice
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check1 no change since last check
Trust Flow (Majestic)03
Citation Flow (Majestic)027
Referring domains (Majestic)017

5 details filled in for both companies.

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