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Head-to-head · Threat Modeling Software

ThreatOpus vs ThreatModeler Nexus

  • Updated Sep 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score ThreatOpus #3 in Threat Modeling Software 8.2/10 Free plan · paid from £129.99/mo Free plan✓ 4 of 4 features Visit ThreatOpus
ThreatModeler Nexus #4 in Threat Modeling Software 7.7/10 Free plan Free plan✓ 3 of 4 features Visit ThreatModeler

ThreatOpus leads on 1 check, ThreatModeler Nexus on 0, and 4 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 scoreThreatOpus · 8.2/10
  • Free planboth
  • Most featuresThreatOpus · 4 of 4

ThreatOpus scores higher on our rubric for threat modeling software: 8.2 against 7.7 out of 10; our editors rank them #3 and #4.

ThreatOpus offers collaborative review; ThreatModeler Nexus doesn't publish it.

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

  • ThreatOpus fits best

    Teams wanting affordable workflow-integrated modeling

  • ThreatModeler Nexus fits best

    Cloud-native teams needing AI-assisted modeling

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature ThreatOpus 8.2/10 Visit ↗ ThreatModeler Nexus 7.7/10 Visit ↗
At a glance
Editor score 8.2 7.7
Ranking #3 in Threat Modeling Software #4 in Threat Modeling Software
Best for Teams wanting affordable workflow-integrated modeling Cloud-native teams needing AI-assisted modeling
Pricing model Free plan + paid Free plan + paid
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Email, Docs Email, Tickets
Compliance 2FA, SSO/SAML SOC 2, ISO 27001, SSO/SAML
Integrations 11 integrations 14 integrations
Built for Small business, Mid-market, Enterprise Enterprise, Mid-market
Features ThreatOpus 4/4 · ThreatModeler Nexus 3/4
Attack-path analysis ✓ ✓
Risk prioritization ✓ ✓
Collaborative review ✓ (best) Not published
Templates and frameworks ✓ ✓
Specs
Project limit Not published Not published
Modeling methods Multiple Multiple
Deployment Both Both
Our review
Pros
  • 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
  • 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
Cons
  • 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
  • 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
Our verdict

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 →

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 →
  1. ThreatOpusThreat Modeling Software 8.2Free plan · paid from £129.99/mo
  2. ThreatModeler NexusThreat Modeling Software 7.7Free plan

Strengths and trade-offs

  • 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

  • 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
  • ThreatOpus8.2/10 · Free plan · paid from £129.99/mo

    A workflow-integrated threat modeling platform with a capable free plan and broad CI/CD coverage.

    Visit ThreatOpusFull verdict →
  • ThreatModeler Nexus7.7/10 · Free plan

    AI-assisted threat modeling with attack paths, risk prioritization, compliance, and CI/CD checks.

    Visit ThreatModelerFull verdict →

More comparisons

All threat modeling software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update