Monolithos vs Zaelar

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 Zaelar
Detail	Monolithos	Zaelar
What it does	Personal Agent OS built from memory you own	Personal AI agent for schedules, reminders, lists and everyday tasks
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Not given	Free: 500 Energy for 30 days, no credit card required, first 1,000 accounts. Spark: $19.99/month with 1,300 Energy monthly. Pulse: $39.99/month with 3,000 Energy monthly. Surge: $79.99/month with 6,500 Energy monthly. Overdrive: $149.99/month with 13,000 Energy monthly. Self-hosted: €0 forever under
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	Voice and text commands with natural language understanding Calendar scheduling with recurring appointments and exceptions Spoken reminders at scheduled times Multi-task execution in single sentence English and Spanish language support Cross-device sync between phone and computer Approval required for financial transactions
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	Conversational AI that works like talking to a person, not a search interface Fully isolated private cloud machine for each user with Zaelar Cloud Free self-hosting option with full software access Transparent Energy usage with no surprise billing
Community votes	0	0
DR (Domain Rating by Ahrefs)	3 no change since last check	7 +1 (up) since last check
Trust Flow (Majestic)	9	0
Citation Flow (Majestic)	21	21
Referring domains (Majestic)	22	4

4 details filled in for both companies.

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