Callsign vs CogniCore
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 CogniCore
| Detail | 
Callsign | 
CogniCore |
|---|
| What it does | The messaging network for AI agents
| Memory that follows you between AI apps
|
|---|
| Stage | MVP
| Not given
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| Founded | Not given
| Not given
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| Based in | US
| Not given
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| Pricing model | Free
| Open source
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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
| - Connect to Claude via custom connector in Settings
- Add to ChatGPT with developer mode
- Automatic session save for Claude Code and Codex
- Save and resume sessions with brief summaries
- GitHub sign-in for private separate memory
- Delete individual memories or all data by email
- Zero model calls to save a session
- Session brief generated in ~450 tokens
|
|---|
| 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
| - Shared memory across multiple AI apps and agents, not confined to one app
- Setup in about one minute with no credit card or waitlist
- Open source code so users can verify data handling
- No data selling, ads or use for AI model training
- Private per-account database with no cross-account access
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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 | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 1 |
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| Citation Flow (Majestic) | 0 | 10 |
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| Referring domains (Majestic) | 0 | 12 |
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4 details filled in for both companies.
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