Best AI Security Testing Tools in 2026
Updated
In short: PromptGuard is ranked #1 of 28 as of 4 October 2026, ahead of Promptfoo and AgentScan. The best-ranked option with a free plan is Promptfoo. The lowest first paid tier on this page is PromptGuard at $19/mo.
When you’re evaluating safeguards for AI systems, compare what each tool lets you test: custom cases, data leakage, jailbreaks, prompt injection, and unsafe outputs. Deployment mode, API-independent access details such as a free plan, and paid-from pricing can help narrow options to fit your environment and budget. Among the named tools are F5 BIG-IP APM, Project Moonshot, and AgentScan, with OpenSecureAI Scanner, PromptGuard, Augustus, Basilisk, and Giskard also represented. Consider which threat behaviors you need to examine and whether the available deployment and pricing details suit your development workflow.
28 AI security testing tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 PromptGuard No phone app RecognisedPhone appDocumentedFree plan 8.2$19/mo Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 2 Promptfoo No phone app RecognisedPhone appDocumentedFree plan 7.9Free
- 3 AgentScan No phone app RecognisedPhone appDocumentedFree plan 7.8$29/mo Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 4 Giskard No phone app RecognisedPhone appDocumentedFree plan 7.6Free
- 5 OpenSecureAI Scanner No phone app RecognisedPhone appDocumentedFree plan 7.5$49/mo Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 6 Basilisk No phone app RecognisedPhone appDocumentedFree plan 7.3Free Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 7 Akto Agentic Red Teaming No phone app RecognisedPhone appDocumentedFree plan 7.1 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 8 Mindgard No phone app RecognisedPhone appDocumentedFree plan 7.1 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 9 Augustus No phone app RecognisedPhone appDocumentedFree plan 7.0Free Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 10 RedForge No phone app RecognisedPhone appDocumentedFree plan 6.9 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 11 PyRIT No phone app RecognisedPhone appDocumentedFree plan 6.9Free Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 12 Project Moonshot No phone app RecognisedPhone appDocumentedFree plan 6.9Free Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 13 AIRTA Red Team No phone app RecognisedPhone appDocumentedFree plan 6.8Free Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 14 Crucible No phone app RecognisedPhone appDocumentedFree plan 6.7 Prompt injection tests: YesJailbreak tests: Yes
- 15 AIRTaaS No phone app RecognisedPhone appDocumentedFree plan 6.6 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 16 Prompt Security AI Red Teaming No phone app RecognisedPhone appDocumentedFree plan 6.3 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 17 DeepTeam No phone app RecognisedPhone appDocumentedFree plan 6.2 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 18 SuperRed No phone app RecognisedPhone appDocumentedFree plan 5.9 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 19 garak No phone app RecognisedPhone appDocumentedFree plan 5.7
- 20 SENTINEL RED No phone app RecognisedPhone appDocumentedFree plan 5.7 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 21 PromptRAID No phone app RecognisedPhone appDocumentedFree plan 5.4 Prompt injection tests: YesJailbreak tests: YesData leakage tests: No
- 22 Red Team LLM Lab No phone app RecognisedPhone appDocumentedFree plan 5.4 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 23 HarmBench No phone app RecognisedPhone appDocumentedFree plan 5.2
- 24 InjectLab No phone app RecognisedPhone appDocumentedFree plan 5.2 Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
- 25 LLMMap No phone app RecognisedPhone appDocumentedFree plan 5.1Free Prompt injection tests: YesJailbreak tests: YesData leakage tests: Yes
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Prompt injection tests | Jailbreak tests |
|---|---|---|---|---|---|---|---|---|
| 1 | PromptGuard | 8.2 | Free plan | $19/mo | Yes | — | Yes | Yes |
| 2 | Promptfoo | 7.9 | Free plan | Free | Yes | — | — | — |
| 3 | AgentScan | 7.8 | Free plan | $29/mo | Yes | 29 /mo | Yes | Yes |
| 4 | Giskard | 7.6 | Free plan | Free | Yes | — | — | — |
| 5 | OpenSecureAI Scanner | 7.5 | Free plan | $49/mo | Yes | 49 /mo | Yes | Yes |
| 6 | Basilisk | 7.3 | Free plan | Free | Yes | — | Yes | Yes |
| 7 | Akto Agentic Red Teaming | 7.1 | No | — | — | — | Yes | Yes |
| 8 | Mindgard | 7.1 | No | — | — | — | Yes | Yes |
| 9 | Augustus | 7.0 | Free plan | Free | — | — | Yes | Yes |
| 10 | RedForge | 6.9 | No | — | — | — | Yes | Yes |
| 11 | PyRIT | 6.9 | Free plan | Free | Yes | — | Yes | Yes |
| 12 | Project Moonshot | 6.9 | Free plan | Free | Yes | — | Yes | Yes |
| 13 | AIRTA Red Team | 6.8 | Free plan | Free | Yes | — | Yes | Yes |
| 14 | Crucible | 6.7 | No | — | Yes | — | Yes | Yes |
| 15 | AIRTaaS | 6.6 | No | — | Yes | — | Yes | Yes |
| 16 | Prompt Security AI Red Teaming | 6.3 | No | — | — | — | Yes | Yes |
| 17 | DeepTeam | 6.2 | No | — | — | — | Yes | Yes |
| 18 | SuperRed | 5.9 | No | — | Yes | — | Yes | Yes |
| 19 | garak | 5.7 | No | — | Yes | — | — | — |
| 20 | SENTINEL RED | 5.7 | No | — | — | — | Yes | Yes |
| 21 | PromptRAID | 5.4 | No | — | — | — | Yes | Yes |
| 22 | Red Team LLM Lab | 5.4 | No | — | Yes | — | Yes | Yes |
| 23 | HarmBench | 5.2 | No | — | Yes | — | — | — |
| 24 | InjectLab | 5.2 | No | — | — | — | Yes | Yes |
| 25 | LLMMap | 5.1 | Free plan | Free | — | — | Yes | Yes |
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 Samsung Mobile US Press?
PromptGuard is ranked #1 of 28 with a score of 8.2. Promptfoo is second and AgentScan third.
How many of these have a free plan?
11 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 mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.