Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Threat Modeling Software

ThreatModeler Nexus vs ThreatOpus

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score ThreatModeler Nexus #3 in Threat Modeling Software 9.2/10 Free plan Free plan✓ 3 of 4 features Visit ThreatModeler
ThreatOpus #4 in Threat Modeling Software 9.1/10 Free plan Free plan✓ 4 of 4 features Visit ThreatOpus

ThreatModeler Nexus leads on 0 checks, ThreatOpus on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreThreatModeler Nexus · 9.2/10
  • Free planboth
  • Most featuresThreatOpus · 4 of 4

ThreatModeler Nexus scores higher on our rubric for threat modeling software: 9.2 against 9.1 out of 10; our editors rank them #3 and #4.

ThreatModeler Nexus is the better fit for cloud-native teams needing AI-assisted modeling. ThreatOpus is the better fit for teams wanting affordable workflow-integrated modeling.

  • ThreatModeler Nexus fits best

    Cloud-native teams needing AI-assisted modeling

  • ThreatOpus fits best

    Teams wanting affordable workflow-integrated modeling

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature ThreatModeler Nexus 9.2/10 Visit ↗ ThreatOpus 9.1/10 Visit ↗
At a glance
Editor score 9.2 9.1
Ranking #3 in Threat Modeling Software #4 in Threat Modeling Software
Best for Cloud-native teams needing AI-assisted modeling Teams wanting affordable workflow-integrated modeling
Pricing model Free plan + paid Free plan + paid
Starting price Free plan £129.99/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Email, Tickets Email, Docs
Compliance SOC 2, ISO 27001, SSO/SAML 2FA, SSO/SAML
Integrations 14 integrations 11 integrations
Built for Enterprise, Mid-market Small business, Mid-market, Enterprise
Features ThreatModeler Nexus 3/4 · ThreatOpus 4/4
Attack-path analysis ✓ ✓
Risk prioritization ✓ ✓
Collaborative review Not checked yet ✓ (best)
Templates and frameworks ✓ ✓
Specs
Project limit Not checked yet Not checked yet
Modeling methods Multiple Multiple
Deployment Both Both
Our review
Pros
  • Maps systems from diagrams, code, documents, cloud, and infrastructure-as-code
  • Prioritizes risk and records attack paths with threats and countermeasures
  • Connects modeling with CI/CD, compliance reporting, SSO, and audit trails
  • Free plan includes threat modeling, PR reviews, STRIDE, and collaboration tools
  • Imports OpenAPI and Terraform with attack-path context and mitigation tracking
  • Connects with major SCM, CI, chat, and collaboration platforms
Cons
  • No open-source edition
  • The listed platform is web-based rather than a native desktop client
  • Enterprise governance features may add overhead to lightweight reviews
  • Free plan is limited to one repository and one SCM or CI provider
  • All listed methodologies are reserved for the Pro and Enterprise tiers
  • Single sign-on and unlimited workspaces are Enterprise features
Our verdict

ThreatModeler Nexus is an enterprise threat-modeling platform for security, architecture, development, and compliance teams. It builds system maps from architecture diagrams, code, documents, cloud environments, and infrastructure-as-code,…

Read the review →

ThreatOpus is a cloud-hosted security platform for security, platform, and engineering teams that want threat modeling connected to development workflows. It combines AI-assisted modeling with pull-request security checks, allowing teams…

Read the review →
  1. ThreatModeler NexusThreat Modeling Software 9.2Free plan
  2. ThreatOpusThreat Modeling Software 9.1Free plan

Strengths and trade-offs

  • ThreatModeler Nexus — where it wins

    • Maps systems from diagrams, code, documents, cloud, and infrastructure-as-code
    • Prioritizes risk and records attack paths with threats and countermeasures
    • Connects modeling with CI/CD, compliance reporting, SSO, and audit trails

    Where it doesn't

    • No open-source edition
    • The listed platform is web-based rather than a native desktop client
    • Enterprise governance features may add overhead to lightweight reviews

  • ThreatOpus — where it wins

    • Free plan includes threat modeling, PR reviews, STRIDE, and collaboration tools
    • Imports OpenAPI and Terraform with attack-path context and mitigation tracking
    • Connects with major SCM, CI, chat, and collaboration platforms

    Where it doesn't

    • Free plan is limited to one repository and one SCM or CI provider
    • All listed methodologies are reserved for the Pro and Enterprise tiers
    • Single sign-on and unlimited workspaces are Enterprise features

More comparisons

All threat modeling software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update