Developer
Free
Ideal for individuals and small projects
- Graph & Ontology Building
- Ontology Editor & Evaluation
- 30 KB max input size
- 5 Graph builds / 30 days
- 1 Ontology build / 30 days
- Community support
Start for free
Start free, scale with confidence
Launch your first graph-powered agent flow quickly, then scale to enterprise throughput with reliability and control.
Plus
Pay-per-use
0.01$ per PCU
Ideal for small teams and growing projects
- Graph & Ontology Building
- Ontology Editor & Evaluation
- 1MB max input size
- 3000 Graph builds / 30 days
- 300 Ontology builds / 30 days
- Email support
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Enterprise
Custom
Custom solutions for large organizations
- Graph & Ontology Building
- Ontology Editor & Evaluation
- Unlimited input sizes
- Unlimited Graph & Ontology builds
- Dedicated support
- 99.99% uptime SLA
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Professional Services
Bespoke
Expert-led engagements for organizations that need hands-on guidance to design, build, and evolve their knowledge graph.
Building Knowledge Graphs is hard. Modeling them correctly is even harder—defining the right entities, structuring relationships, and evolving them as the domain changes. Our ontology, graph modeling, and knowledge engineering experts work side by side with your team.
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Ontology design & governance
Define the right entities, properties, and semantic rules for your domain—then keep them consistent as the domain evolves.
Graph schema architecture
Design production-ready graph schemas aligned with your data sources and retrieval patterns.
Knowledge graph implementation
End-to-end setup of your graph pipeline—ingestion, extraction, enrichment, and integration with Neo4j or FalkorDB.
Training & knowledge transfer
Upskill your team through workshops and pair-programming sessions so they own the graph long-term.
It is free with no time limit and no credit card required. Fair-use volume limits apply, and you can move to the Platform tier when you need committed capacity or enterprise features.
Perseus builds and maintains the graph by transforming unstructured text into structured knowledge. A graph database (like Neo4j or FalkorDB) stores and queries it. You need both to build a complete GraphRAG system.
Yes. Most Self-serve and Platform customers build their own ontologies using the SDK or our Ontology Builder. Professional services are entirely optional.
Perseus is highly flexible; it can import and extend existing ontologies in OWL, SKOS, or custom formats to ensure your graph generation follows your specific domain rules.
Pricing for the Platform tier is based on workload capacity and committed usage, rather than a simple per-user or per-query model.
We offer Cloud-managed options for Self-serve and Platform users, VPC deployment for Platform users, and On-prem or air-gapped solutions for Enterprise customers.
Yes. Security documentation including our DPA is available on request for Platform tier customers and above.