AgentStack vs Cobrain

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

AgentStack compared with Cobrain
Detail	AgentStack	Cobrain
What it does	Cloud backend for AI-operated products with hosting, payments, and MCP integration	Shared memory for Claude, ChatGPT and your AIs
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	IT
Pricing model	Not given	Not given
Pricing	Not given	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.
Key features	MCP integration with ChatGPT, Claude, Grok, and Cursor Authentication and data management Payment processing REST API Knowledge and RAG systems Project hosting	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
What makes it different	Unified backend for multiple AI models and platforms Works with any MCP-capable AI All-in-one operational tooling for AI products	Free plan with no expiration for solo users Receivers of shares never pay Built by an agency using it daily with 648 notes
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)	9 no change since last check	5 no change since last check
Trust Flow (Majestic)	2	7
Citation Flow (Majestic)	16	27
Referring domains (Majestic)	26	15

3 details filled in for both companies.