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Monolithos vs Cinnamon

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

Monolithos compared with Cinnamon
Detail MonolithosCinnamon logo Cinnamon
What it doesPersonal Agent OS built from memory you own A personal AI agent your family can share
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Free trial
PricingNot given Free trial with 25 credits (15-25 tasks). Personal Plan: $9.99/month (50 credits/month, 1 member). Group Plan: $19.99/month (150 credits/month, up to 6 members). Group Plan Max: $99.99/month (1,000 credits/month, up to 10 members).
Key features
  • User-owned memory in Markdown and YAML
  • Eight modules: Memory, Flow, Black Hole, Minutes, Codex, Prism, Audio, Facet
  • Multi-step AI tasks with human approval checkpoints
  • Meeting transcription sealed into memory
  • Markdown-to-presentation generation with Prism
  • Audio generation from notes
  • Visual asset library with provenance tracking
  • Private domain boundaries to exclude content from cloud AI
  • Project mode to bind files and conversations into sealed context
  • Compatible with existing Obsidian vaults without migration
  • Plan trips with resorts, flights, and shared itineraries
  • Tidy inbox with morning digest and draft replies
  • Manage calendar with appointments, forms, and reminders
  • Monitor prices and alert when thresholds are reached
  • Review, edit, or delete all saved facts in plain English
  • Approve every email, calendar invite, or external action before execution
  • Gmail and Google Calendar connectors
  • Monitor and summarize Gmail mailbox for family activities
  • Research and compare products and local services
What makes it different
  • Memory and data remain on your device and under your ownership, never used for model training
  • Files stay readable as plain Markdown and YAML with any text editor; no vendor lock-in possible
  • Works with existing Obsidian vaults natively without import or conversion
  • Private-domain content stays out of cloud AI context automatically
  • AI recall includes sources so you can see what answers are based on
  • Human-in-the-loop approval for every action before it executes
  • Transparent memory with plain-English facts you can edit or delete
  • No ads, no data harvesting, no training models on user data
  • Built by infrastructure veterans from Meta, Amazon, and earlier startups
Community votes00
DR (Domain Rating by Ahrefs)3 no change since last check2 −4 (down) since last check
Trust Flow (Majestic)90
Citation Flow (Majestic)2116
Referring domains (Majestic)227

4 details filled in for both companies.

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