Levee vs ModelBrain RAG
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Levee compared with ModelBrain RAG
| Detail | 
Levee | 
ModelBrain RAG |
|---|
| What it does | Authorization layer for AI agent spend with human-approved mandates and tamper-evident proof
| An HTTP document search API for your apps
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| Stage | Startup
| Not given
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| Founded | 2026
| Not given
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| Based in | Not given
| US
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| Pricing model | Free trial
| Open source
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| Pricing | Free 12 week pilot for card issuing platforms
| Not given
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| Key features | - Passkey-signed spend mandates with purpose, budget, merchants, and time windows
- Real-time authorization decisions with sub-1 second response time at p99
- Human challenge via passkey step-up for exceptional spend
- Fail-closed payment processing if no decision arrives in time
- Hash-chained evidence ledger with tamper-evident records
- Exportable evidence packs for chargebacks and audits
- Supports card, wallet, x402 and stablecoin payment rails
| - Search passages that match a query with scores and file references
- Manage collections and add or remove documents over HTTP or web interface
- Share vaults and partitions for search-only access
- API keys with read, write or admin access levels
- Web interface for search and administration
- User account management with three access levels
- Full-text and vector search indexes
- Runs locally on 127.0.0.1 with no outgoing connections
- SHA-256 hashed API keys and scrypt hashed passwords
- Limit lists restrict collections and vaults per user or API key
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| What makes it different | - Human-approved mandates enforce intent, not just static limits or merchant category blocks
- Operates outside the agent in the issuer's authorization path, preventing agent bypass or override
- Creates tamper-evident audit trail linked to agent identity, run, and policy version
- Never holds funds or issues cards; integrates with existing issuer infrastructure
- Single mandate and policy core across multiple payment rails and issuers
| - Runs entirely locally on your computer with no outgoing connections
- Free and open source with MIT license
- Does not write answers or contain a language model
- Shared vaults and partitions are search-only and cannot be modified
- Integrates with any language model of your choice
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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 | 1 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 3 |
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| Citation Flow (Majestic) | 0 | 27 |
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| Referring domains (Majestic) | 0 | 17 |
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4 details filled in for both companies.
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