AI21 vs Exabase
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
AI21 compared with Exabase
| Detail | 
AI21 | 
Exabase |
|---|
| What it does | Post-train specialized models for your task, creating an AI edge your competitors can't buy
| Context infrastructure for AI agents
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| Stage | Established
| Startup
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| Founded | Not given
| Not given
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| Based in | IL
| GB
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| Pricing model | Contact for pricing
| Freemium
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| Pricing | Not given
| Not given
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| Key features | - Forward-Deployed Researchers provide end-to-end model training and optimization
- Custom evaluation suite development from real tasks
- Production-ready deployment with cost-quality trade-offs
- Deployment flexibility including on-premises and VPC options
- Data security with no retention and full traceability
- Continuous model improvement from production traffic
- Customer ownership of model weights and training recipes
| - Memory system with self-managing advanced memory
- Isolated per-tenant instances with version rollback
- Portable context server with files, notes and links
- Sub-document multi-modal hybrid search
- Structured data extraction from PDFs, websites and images
- Autonomous agents for knowledge base automation
- 99.9% uptime SLA
- AES-256 encryption at rest and SSL in transit
- TypeScript SDK and REST API
- Model-agnostic and framework-agnostic
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| What makes it different | - Customers own specialized models trained on proprietary data, not rented general-purpose models
- Achieve frontier-level quality at lower costs through specialized training
- Five years of experience with diverse post-training and optimization methods
- Models ship production-ready in weeks with ongoing improvement capability
- Secure deployment with no data retention and auditable access controls
| - Cut token spend by up to 81% through persistent agent memory instead of full context window stuffing
- State-of-the-art on two leading AI memory benchmarks
- Full-stack data layer eliminating need for multiple services
- Production-tested at scale powering Fabric platform
- Self-improving memory that tracks relationships and resolves contradictions
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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) | 75 ● no change since last check | 29 ● no change since last check |
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| Trust Flow (Majestic) | 22 | 11 |
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| Citation Flow (Majestic) | 44 | 32 |
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| Referring domains (Majestic) | 3529 | 122 |
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6 details filled in for both companies.
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