pytm vs IriusRisk Threat Modeling Platform: 2026 Comparison
pytm is a free threat modeling tool. IriusRisk Threat Modeling Platform is a commercial threat modeling tool by IriusRisk. Compare features, ratings, integrations, and community reviews side by side to find the best threat modeling fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
AppSec teams with Python-heavy codebases will get the most from pytm because it embeds threat modeling directly into the development workflow instead of treating it as a separate security gate. The framework generates threat models from code as developers commit, catching architectural risks before they reach review; 9,000 GitHub stars signal real adoption among engineering teams that actually use it. Skip pytm if your threat modeling needs include non-Python services or if you lack engineering bandwidth to integrate code-first tooling; this is a developer-first tool, not a security-first one.
IriusRisk Threat Modeling Platform
Product and application security teams building cloud-native architectures need IriusRisk Threat Modeling Platform to catch design-phase vulnerabilities before they reach code, which is where threat modeling actually prevents costly rewrites. The platform's automated threat generation across software architectures and supply chain risk visibility directly address NIST GV.SC, cutting the manual effort that makes most teams skip threat modeling altogether. Skip this if your organization treats threat modeling as a compliance checkbox rather than a design discipline; IriusRisk assumes you'll act on what it finds.
