OpenCTI review
A broad, extensible TIP with a free self-hosted edition and enterprise deployment options.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OpenCTI is an open-source cyber threat intelligence platform for security teams, government organizations, and enterprises. It structures, stores, correlates, visualizes, and shares technical and non-technical intelligence through a STIX 2.1 knowledge graph. The platform covers indicator enrichment, intelligence ingestion, threat reports, dashboards, exports, case management, workflow automation, and data sharing. Web, Linux, and API access support hybrid deployment, while the free self-hosted Community Edition gives teams a practical starting point.
Its breadth is a central strength. OpenCTI accepts intelligence through TAXII, RSS, CSV, JSON, connectors, and feeds, then supports enrichment through integrations such as MISP, MITRE datasets, CVE, AlienVault, Mandiant, Shodan, and DomainTools. Security operations teams can connect it with Splunk, Elastic Security, and QRadar. GraphQL APIs, data-sharing feeds, organization-based segregation, and role-based access control support broader intelligence workflows. AI-assisted imports, summaries, insights, and natural-language search add another way to work with collected information.
The plan structure separates self-managed access from commercial capabilities. Community Edition is free forever and includes the complete STIX 2.1 knowledge graph, open-source connectors, and community support on Slack. Enterprise Edition adds automated playbooks, Priority Intelligence Requirements, advanced RBAC, SSO, audit logging, and dedicated support. SaaS Medium and SaaS Large provide managed dedicated instances, include Enterprise Edition, and offer unlimited users, connectors, and integrations. Teams seeking control and extensibility should start with Community Edition; organizations needing managed hosting, advanced access controls, or dedicated support should consider the commercial options.
OpenCTI pros and cons
- Where it wins
- Free self-hosted Community Edition with a STIX 2.1 knowledge graph
- Broad ingestion, enrichment, reporting, cases, playbooks, and APIs
- Connectors for MISP, MITRE, Splunk, Elastic Security, and more
- Where it doesn't
- Community Edition relies on self-hosting and community Slack support
- Enterprise features require a paid edition
- SaaS options are limited to Medium and Large resource tiers
OpenCTI fact sheet, pricing and score →
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