ThreatModeler is built for enterprise threat modeling programmes: large threat libraries, automated threat generation across applications and cloud environments, and, since June 2026, an agentic AI platform called ThreatModeler Nexus. With its acquisition of IriusRisk in January 2026, it now owns two of the best-known platforms in the category.
That's a lot of platform. Many security teams, especially those with two to twenty people covering a handful of products, need something smaller: rigorous threat models, a risk register leadership can read, and evidence for auditors, at a price they can approve themselves. That's the gap ThreatTree fills. Here's an honest comparison.
The short version: choose ThreatModeler if you're rolling out threat modeling across a large portfolio and want automation, AI and vendor services to carry it. Choose ThreatTree if a small team is modelling a few systems in depth and wants attack trees, a scored risk register and compliance mapping, with a free plan and a published $29 per user per month price.
Side by side
| ThreatModeler | ThreatTree | |
|---|---|---|
| Price | Annual subscription, on request | Free plan; Pro $29/user/month; Enterprise on request |
| Free option | No | Yes: 3 forests, no credit card |
| Built for | Enterprise programmes across many applications | Security teams, consultancies and solo builders modelling systems in depth |
| Finding threats | Generated from a threat library as you diagram; AI and agentic features | Identified by your team, tagged with STRIDE, LINDDUN, OWASP Top 10, CAPEC and MITRE ATT&CK |
| Attack trees | Not a core feature | Yes, with AND/OR gates, linked to the DFD |
| Risk register | Threat and mitigation tracking across models | Forest-wide register built from every scored attack-tree step, with treatment plans and owners |
| Standards mapping | Yes | ISO 27001:2022, NIST SP 800-53, NIST CSF 2.0, CIS v8, ASVS, PCI DSS v4.0, SOC 2 (Pro) |
| Integrations | Broad enterprise integrations | Slack and Teams alerts (Pro); Jira, ServiceNow, Linear, Azure DevOps, Splunk, Vanta, Drata (Enterprise) |
| Client-side encryption | Not advertised | Optional AES-256-GCM on every plan |
| Getting started | Demo and sales process | Sign up and start in minutes |
When ThreatModeler is the better choice
- You're standardising threat modeling across dozens or hundreds of applications, cloud accounts and devices.
- You want threats generated automatically from a large library, and AI that drafts and maintains models.
- You need a vendor with professional services, enterprise support and the scale to back a multi-year rollout.
- Procurement prefers an established enterprise vendor with a long customer list.
When ThreatTree is the better choice
- You're a small team. You need depth on a few systems, not breadth across a thousand, and a tool your team can learn in an afternoon.
- You want to reason about attacks, not just list them. Attack trees show which steps an attacker needs and which single control breaks several paths, which is how you decide where to spend a small budget.
- You need evidence, not just a model. A scored register with treatment decisions and owners, mitigations mapped to ISO 27001 or SOC 2 controls, and a PDF report covers most of what an auditor asks for. See how it works for SaaS teams preparing for SOC 2.
- You want to start today. Free to try with a real system, and $29 per user per month when you need more, with no sales call.
What about AI?
ThreatModeler has invested heavily in AI that generates and maintains threat models. ThreatTree doesn't have AI features built in. That's partly a product choice: a threat model is a map of where your system is weakest, and we think the judgment calls in it (what's likely, what matters, what to accept) should stay with people who know the system. Our article on where AI helps threat modeling and where it misleads explains the trade-offs. If AI-generated models are central to your plans, ThreatModeler is the more natural fit.
Frequently asked questions
How much does ThreatModeler cost?
ThreatModeler doesn't publish its prices. It's sold as an annual subscription priced by users, support level and modules, so you'll need a quote. ThreatTree's Pro plan is $29 per user per month, with a Free plan to start.
Does ThreatModeler have a free plan?
Not that we could find. ThreatTree has a Free plan with no credit card, covering up to three systems with data flow diagrams, attack trees and a risk register.
Is ThreatTree suitable for enterprises?
Yes, for teams that model systems in depth. Enterprise adds SSO/SAML, SCIM provisioning, IP allowlisting, two-way Jira, ServiceNow, Linear and Azure DevOps sync, a Splunk feed, Vanta and Drata evidence sync, and DFD import from Terraform, CloudFormation and OpenAPI. If you need automated threat generation across hundreds of applications, ThreatModeler is built for that.
Does ThreatTree use AI?
Not currently. Threats are identified and scored by your team, guided by STRIDE, OWASP, CAPEC and MITRE ATT&CK. ThreatModeler offers AI-driven and agentic features if that's central to your plans.
Comparing more tools? See the best threat modeling software in 2026, or our IriusRisk alternative page. ThreatModeler details come from its public announcements and third-party listings, checked on October 8, 2026. ThreatModeler is a trademark of its owner, which is not affiliated with ThreatTree.