Best AI Security Testing Tools in 2026
Updated
In short: Project Moonshot is ranked #1 of 29 as of 4 October 2026, ahead of OpenSecureAI Scanner and PromptGuard. The best-ranked option with a free plan is OpenSecureAI Scanner. The lowest first paid tier on this page is PromptGuard at $19/mo.
AI security testing tools help developers examine how AI systems handle threats and unsafe behavior. Compare custom test cases, data leakage tests, jailbreak tests, prompt injection tests, and unsafe output tests to see which risks each tool addresses. Deployment mode, free plan availability, and paid-from pricing offer additional ways to assess fit. The ranking begins with PromptGuard, AgentScan, and OpenSecureAI Scanner, followed by Basilisk, PyRIT, Project Moonshot, Akto Agentic Red Teaming, and Mindgard. Use the listed criteria to consider the tests you need to run, how you plan to deploy a tool, and what its pricing options make practical for your work.
29 AI security testing tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Project Moonshot Top pick · 7.3 Free plan · Free
#2 OpenSecureAI Scanner Runner-up · 7.2 Free plan · $49/mo
#3 PromptGuard Also great · 7.2 Free plan · $19/mo
- Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiLinuxmacOSWebWindows
- Free plan
- Yes
- Paid from
- 49 /mo
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms$49/mofirst paid tier About OpenSecureAI ScannerVisit site - Free plan apiextensionLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms$19/mofirst paid tier About PromptGuardVisit site - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSself-hostedWindows
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Free trial AndroidapiiOSLinuxmacOSself-hostedWebWindows
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiWeb
- Free plan
- Yes
- Paid from
- 29 /mo
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms$29/mofirst paid tier About AgentScanVisit site - Free plan apiLinuxself-hostedWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Linux
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Prompt injection tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - WindowsLinux
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- No
RecognisedDocumentedFree planPlatforms - Web
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms -
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms -
- Prompt injection tests
- Yes
- Jailbreak tests
- Yes
- Data leakage tests
- Yes
- Unsafe output tests
- Yes
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI security testing tool is ranked first on Everything Xiaomi?
Project Moonshot is ranked #1 of 29 with a score of 7.3. OpenSecureAI Scanner is second and PromptGuard third.
How many of these have a free plan?
9 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, PromptGuard has the lowest first paid tier we found: $19/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.