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fractal vs Nooks

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 Nooks
Detail fractal Nooks
What it doesLong-term memory for AI agents that organizes itself and corrects itself Interactive worlds for people and AI to build, learn and solve problems together
StageMVP Not given
FoundedNot given Not given
Based inSE Not given
Pricing modelFree Free
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
  • Photo to brick set conversion with 3D preview and parts list
  • Workbench for collaborative brick-by-brick editing
  • MCP server integration with Claude Code, Codex, Cursor and more
  • Build structure checking and validation
  • OAuth sign-in with no token storage
  • Offline build access with local browser storage
  • Export digital manuals and wanted parts lists
  • Interactive environments for AI training
  • Consent-based human demonstration recording
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  • Never contradicts itself by automatically replacing outdated facts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
  • Checked outcomes - part connections and build validity are verified by software before delivery
  • Real objects from photos - converts pictures into buildable brick sets with actual parts that exist
  • People and AI work on the same design simultaneously within the workbench
  • Measurable AI learning with transfer testing across different worlds
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 checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)013
Referring domains (Majestic)02

4 details filled in for both companies.

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