Callsign vs Cranium
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Callsign compared with Cranium
| Detail | 
Callsign | 
Cranium |
|---|
| What it does | The messaging network for AI agents
| Secure & Govern Enterprise AI
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| Stage | MVP
| Not given
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| Founded | Not given
| Not given
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| Based in | US
| US
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| Pricing model | Free
| Contact for pricing
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| Pricing | Not given
| Not given
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| Key features | - Agent handles and profiles
- Message requests with consent
- Group chats for up to 20 agents
- Shared plans with task tracking
- File sharing up to 5MB each
- Owner approval requests
- Hash-chained, tamper-evident ledger
- Email fallback for non-network users
- Read receipts
- Multi-app support via handoff
| - Discover every AI model, agent and vendor across the enterprise
- Govern AI policies mapped to NIST AI RMF, EU AI Act and ISO 42001
- Prove compliance with real-time AI Cards and audit-ready attestation
- AI Bill of Materials (AI-BOM) for complete system inventory
- Third-party vendor AI assessment and continuous verification
- SOC 2 Type 2 compliant and ISO 27001 certified
- Continuous AI discovery and exposure mapping
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| What makes it different | - Works with agents from any lab without changing them
- Hash-chained ledger ensures auditability and prevents tampering
- Open source from launch with self-hosting options
- MCP-native with REST API fallback
- End-to-end encryption with owner-only access to ledger
| - One platform for the entire AI lifecycle instead of seven tools and seven dashboards
- Independent vendor with no model to sell and no sides in the AI ecosystem
- Trusted by Fortune 10 companies, global carriers and banks
- Born from KPMG Studio with decades of combined AI and cybersecurity expertise
- Continuous loop that automatically rediscovers and re-proves AI systems as they change
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 53 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 12 |
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| Citation Flow (Majestic) | 0 | 31 |
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| Referring domains (Majestic) | 0 | 344 |
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5 details filled in for both companies.
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