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Rool® vs Cogni

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

Rool® compared with Cogni
DetailRool® logo Rool® Cogni
What it doesYour private AI machine in the cloud Memory that reasons
StageNot given Not given
FoundedNot given Not given
Based inIE US
Pricing modelFreemium Freemium
PricingStandard: Free forever. Plus: €9/month. Pro: €25/month. Team plan: No subscription, pay per machine and per AI use from prepaid balance in US dollars. Machine sizes: R0 $5/month, R1 $10/month, R2 $30/month. AI pricing per million tokens: Rool® 1 input $0.35, cached input $0.07, output $0.70. Rool® 1 Free plan at $0 USD; Pro plan at $5 USD per month.
Key features
  • Persistent memory that builds knowledge graphs over time
  • File storage and management with version control
  • Collaboration with shared access and permissions
  • Multiple Rool Machines per account
  • Built-in connectors and custom MCP servers
  • Full data export and API access
  • Progressive Web App and mobile apps
  • Hourly credit refills with daily limits
  • Rool 1 and Rool 1.5 AI models
  • EU infrastructure with self-hosted models
  • Entity-graph spreading activation for cross-vocabulary retrieval
  • Works with any LLM model
  • No LLM or GPU in retrieval path
  • Point-in-time and windowed recall
  • Timestamped memories
  • Fixed recall cost as memory grows
What makes it different
  • Private machine isolated at VM level, not just by access rules
  • Hosted entirely in the EU with self-hosted AI models
  • Never trains AI models on your data
  • Free forever plan with no credit card required
  • Reaches answers across unrelated documents that share no keywords, where vector search scores zero
  • Deterministic retrieval with no model in the path, so results never vary between queries
  • Constant per-query cost regardless of memory size, even at 32,000 words
  • No infrastructure to run—no vector database, cluster, or GPU needed
  • Works with any model, so small local models gain the most from better retrieval
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)16 no change since last check4 no change since last check
Trust Flow (Majestic)62
Citation Flow (Majestic)2921
Referring domains (Majestic)5634

6 details filled in for both companies.

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