# Contrast Application Security Testing (AST) vs Contrast One: side-by-side comparison (2026) [Contrast Application Security Testing (AST)](https://cybersectools.com/tools/contrast-application-security-testing-ast) is a commercial [interactive application security testing](https://cybersectools.com/categories/iast) solution by [Contrast Security](https://cybersectools.com/companies/contrast-security). [Contrast One](https://cybersectools.com/tools/contrast-one) is a commercial [interactive application security testing](https://cybersectools.com/categories/iast) solution by [Contrast Security](https://cybersectools.com/companies/contrast-security). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Contrast Application Security Testing (AST) | Contrast One | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Interactive Application Security Testing | Interactive Application Security Testing | | Verified | No | No | | Deployment type | Hybrid | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Contrast Security | Contrast Security | | Headquarters | – | – | ### Use cases and capabilities | | Contrast Application Security Testing (AST) | Contrast One | |---|---|---| | CI/CD | Yes | Yes | | SCA | Yes | – | | Zero Day | – | Yes | ### Core features **Contrast Application Security Testing (AST)** 10 features listed. Sign in on the page to see them. **Contrast One** 10 features listed. Sign in on the page to see them. ### Integrations **Contrast Application Security Testing (AST)** 15 integrations listed. Sign in on the page to see them. **Contrast One** 15 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Contrast Application Security Testing (AST)](https://cybersectools.com/tools/contrast-application-security-testing-ast) fits if you need both cloud and on-premises options. - [Contrast One](https://cybersectools.com/tools/contrast-one) fits if you want a cloud product. ## Contrast Application Security Testing (AST) vs Contrast One FAQ Common questions when comparing Contrast Application Security Testing (AST) vs Contrast One for interactive application security testing. ### What is the difference between Contrast Application Security Testing (AST) and Contrast One? **Contrast Application Security Testing (AST)**: Runtime app security testing that monitors code execution to find vulnerabilities. Built by Contrast Security. **Contrast One**: Managed application and API security platform with runtime protection. Built by Contrast Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Contrast Application Security Testing (AST) and Contrast One? **Contrast Application Security Testing (AST)** is made by Contrast Security. **Contrast One** is made by Contrast Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Contrast Application Security Testing (AST) a good alternative to Contrast One? Often, yes. Contrast Application Security Testing (AST) and Contrast One are both Interactive Application Security Testing products, and both cover CI/CD. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Contrast Application Security Testing (AST) vs Black Duck Seeker IAST](https://cybersectools.com/compare/black-duck-seeker-iast-vs-contrast-application-security-testing-ast) - [Contrast Application Security Testing (AST) vs Datadog Runtime Code Analysis (IAST)](https://cybersectools.com/compare/contrast-application-security-testing-ast-vs-datadog-runtime-code-analysis-iast) - [Contrast Application Security Testing (AST) vs Contrast Runtime Security Platform](https://cybersectools.com/compare/contrast-application-security-testing-ast-vs-contrast-runtime-security-platform) - [Contrast One vs Black Duck Seeker IAST](https://cybersectools.com/compare/black-duck-seeker-iast-vs-contrast-one) - [Contrast One vs Datadog Runtime Code Analysis (IAST)](https://cybersectools.com/compare/contrast-one-vs-datadog-runtime-code-analysis-iast) - [Contrast One vs Contrast Runtime Security Platform](https://cybersectools.com/compare/contrast-one-vs-contrast-runtime-security-platform) ## Alternatives to each - [See all Contrast Application Security Testing (AST) alternatives](https://cybersectools.com/alternatives/contrast-application-security-testing-ast) - [See all Contrast One alternatives](https://cybersectools.com/alternatives/contrast-one) --- Source: https://cybersectools.com/compare/contrast-application-security-testing-ast-vs-contrast-one For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/contrast-application-security-testing-ast.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Contrast Application Security Testing (AST) and Contrast One: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md