Cobrain vs Zanii

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

Cobrain compared with Zanii
Detail	Cobrain	Zanii
What it does	Shared memory for Claude, ChatGPT and your AIs	Verifiable identity and proof-of-action for AI agents
Stage	Startup	Not given
Founded	2026	Not given
Based in	IT	AE
Pricing model	Not given	Not given
Pricing	Free: $0, up to 1,000 notes. Pro: $9/month, unlimited notes and shares. Team: $7/seat per month (minimum 3 seats), company brain with multiple admins.	Not given
Key features	Shared memory across different AIs Markdown notes in real folders Share branches with collaborators MCP connector for Claude, ChatGPT and compatible AIs Search by meaning on Pro and Team plans Attach PDFs and documents for AI to read Version history with unlimited revisions on Pro Permission-based access control	Ed25519 signed receipts with hash-chaining TypeScript and Python SDKs Agent discovery and trust lookup One-call integration with OpenAI and Anthropic
What makes it different	Free plan with no expiration for solo users Receivers of shares never pay Built by an agency using it daily with 648 notes	Open protocol verifiable offline without trusting Zanii Cryptographic proof of delegated authority and action Immutable append-only log anchored to public blockchain Verifiable agent identity with delegation and scoped permissions
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 no change since last check	25 no change since last check
Trust Flow (Majestic)	7	0
Citation Flow (Majestic)	27	22
Referring domains (Majestic)	15	6

4 details filled in for both companies.

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