The Best AI Security Testing Tools in 2026
We researched AI security testing tools through official websites, including pricing pages, plan tables, and product documentation. Rankings consider performance against the category’s core job, value for money, and verified features for evaluating LLM applications and their safeguards.
Our top picks
-
Top ranked
PromptGuard#1 of 299.3/10Broad AI security testing with flexible deployment and a low-cost paid entry tier.
Free plan
-
Runner-up
Akto Agentic Red Teaming#2 of 299.1/10Broad AI security testing for enterprise agent and API security teams.
Pricing on request
-
Top-ranked free plan
Promptfoo#5 of 298.7/10Open-source AI evaluation and red teaming for development teams shipping LLM applications.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 29 tools, best first
-
Best forTeams wanting broad, affordable red teaming
Broad AI security testing with flexible deployment and a low-cost paid entry tier.
- Custom test cases
- Unsafe output tests
- Data leakage tests
9.3/10★★★★★Visit PromptGuard -
Best forEnterprise agent and API security teams
Broad AI security testing for enterprise agent and API security teams.
- Custom test cases
- Unsafe output tests
- Data leakage tests
9.1/10★★★★★Visit Akto -
Best forEnterprise AI risk and remediation programs
A broad AI risk platform spanning discovery, testing, protection, and remediation.
- Custom test cases
- Unsafe output tests
- Data leakage tests
9.0/10★★★★☆Visit Mindgard -
Best forLarge enterprises using F5 infrastructure
A self-hosted AI red-team platform for testing attacks, agent behavior, and operational risk.
- Custom test cases
- Unsafe output tests
- Data leakage tests
8.8/10★★★★☆Visit F5 AI Red Team -
Best forDevelopers building evaluation into CI/CD
Open-source AI evaluation and red teaming for development teams shipping LLM applications.
8.7/10★★★★☆Visit Promptfoo -
Best forCompliance-focused security engineers
A self-hosted toolkit for testing LLM security risks and producing compliance-ready reports.
- Custom test cases
- Unsafe output tests
- Data leakage tests
8.6/10★★★★☆Visit RedForge -
Best forSmall teams wanting transparent pricing
A focused cloud scanner with transparent entry pricing for AI-agent security testing.
- Unsafe output tests
- Data leakage tests
- Jailbreak tests
8.5/10★★★★☆Visit AgentScan -
Best forAgent teams testing complex attack lifecycles
A broad CLI for testing agent attack lifecycles locally and in CI/CD.
- Custom test cases
- Unsafe output tests
- Jailbreak tests
8.4/10★★★★☆Visit Crucible -
Best forMature teams needing evaluation workflows
Open-source testing with evaluation workflows for teams operating LLM applications.
8.3/10★★★★☆Visit Giskard -
Best forTeams wanting free continuous validation
A free platform for continuous red-team and guardrail validation of AI systems.
- Unsafe output tests
- Data leakage tests
- Jailbreak tests
8.2/10★★★★☆Visit AIRTaaS -
Best forBudget-conscious teams wanting a hosted scanner
A flexible hosted and local scanner with broad LLM security coverage.
- Unsafe output tests
- Data leakage tests
- Jailbreak tests
8.1/10★★★★☆Visit OpenSecureAI -
Best forTeams needing continuous pre-production testing
A broad AI security testing platform for continuous evaluations and actionable risk findings.
- Unsafe output tests
- Data leakage tests
- Jailbreak tests
8.0/10★★★★☆Visit site -
Best forOpen-source teams needing broad local testing
Broad self-hosted AI security testing with evolutionary adversarial search and CI/CD support.
- Custom test cases
- Unsafe output tests
- Data leakage tests
7.9/10★★★★☆Visit Basilisk -
Best forPython teams using compliance mappings
A Python-first toolkit for testing AI applications against attacks, leaks and unsafe outputs.
- Custom test cases
- Unsafe output tests
- Data leakage tests
7.8/10★★★★☆Explore DeepTeam -
Best forOpen-source LLM weakness scanning
A free, extensible command-line toolkit for scanning LLM weaknesses across local and hosted models.
7.7/10★★★★☆Visit garak -
Best forPortable security probe automation
A portable Go scanner for probing LLMs across attacks, providers, and custom endpoints.
- Custom test cases
- Unsafe output tests
- Data leakage tests
7.6/10★★★★☆Visit Augustus -
Best forResearchers running advanced red-team experiments
A flexible PyRIT toolkit for advanced, self-hosted generative-AI red teaming.
- Custom test cases
- Unsafe output tests
- Data leakage tests
7.5/10★★★★☆Visit PyRIT -
Best forSecurity teams using playbook-based testing
A playbook-driven security testing tool for teams assessing LLM and agentic applications.
- Custom test cases
- Data leakage tests
- Jailbreak tests
7.4/10★★★★☆Visit AIRTA Systems -
Best forTeams wanting benchmark-driven red teaming
A beta, self-hosted toolkit for benchmark-driven LLM security testing.
- Custom test cases
- Unsafe output tests
- Data leakage tests
7.3/10★★★★☆Try Project Moonshot -
Best forTeams needing broad safety and leakage checks
Broad, self-hosted LLM testing for injection, leakage, safety, and quality risks.
- Custom test cases
- Unsafe output tests
- Data leakage tests
7.2/10★★★★☆Visit SENTINEL RED -
Best forResearchers evaluating harmful model behavior
A research-focused framework for automated red teaming, safety evaluation, and attack measurement.
7.1/10★★★★☆Visit HarmBench -
Best forCLI users testing prompt robustness
A provider-agnostic CLI for structured prompt-injection and jailbreak testing.
- Jailbreak tests
7.0/10★★★★☆Visit PromptRAID -
Best forTeams studying prompt attacks and backdoors
A self-hosted lab for examining prompt attacks, jailbreaks, backdoors, and RAG poisoning.
- Custom test cases
- Data leakage tests
- Jailbreak tests
6.9/10★★★☆☆View Red Team LLM -
Best forResearchers building composable evaluations
A configurable framework for researchers evaluating attacks, agents, and security claims.
- Custom test cases
- Unsafe output tests
- Data leakage tests
6.8/10★★★☆☆Visit SuperRed -
Best forSecurity researchers needing attack technique catalogs
A focused self-hosted catalog for structured LLM attack research.
- Unsafe output tests
- Data leakage tests
- Jailbreak tests
6.7/10★★★☆☆Explore InjectLab -
Best forWeb security teams testing injection points
Focused prompt-injection testing with broad attack coverage and flexible LLM backends.
- Data leakage tests
- Jailbreak tests
6.6/10★★★☆☆Visit LLMMap -
Best forPytest-based agent security testing
A focused, open-source framework for testing agent behavior, tool calls, and prompt injection.
- Custom test cases
- Unsafe output tests
- Data leakage tests
6.5/10★★★☆☆Visit RAMPART -
Best forResearchers benchmarking agent defenses
A self-hosted Python framework for benchmarking prompt injection and agent defenses.
- Custom test cases
- Jailbreak tests
6.4/10★★★☆☆Visit AgentDojo -
Best forCybersecurity-focused model evaluation
A focused, self-hosted suite for testing cybersecurity risks and capabilities in LLMs.
- Unsafe output tests
- Jailbreak tests
6.3/10★★★☆☆Visit CyberSecEval
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Prompt injection tests | Jailbreak tests | Data leakage tests | Unsafe output tests | Custom test cases | Deployment mode | Score |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | PromptGuard | Yes | $19/seat/mo | Yes | Yes | Yes | Yes | Yes | Both | 9.3 |
| 2 | Akto Agentic Red Teaming | Yes | Yes | Yes | Yes | Yes | Both | 9.1 | ||
| 3 | Mindgard | Yes | Yes | Yes | Yes | Yes | Both | 9.0 | ||
| 4 | F5 AI Red Team | Yes | Yes | Yes | Yes | Yes | Both | 8.8 | ||
| 5 | Promptfoo | Yes | 8.7 | |||||||
| 6 | RedForge | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 8.6 | |
| 7 | AgentScan | Yes | $29/mo | Yes | Yes | Yes | Yes | Cloud | 8.5 | |
| 8 | Crucible | Yes | Yes | Yes | Yes | Yes | Self_hosted | 8.4 | ||
| 9 | Giskard | Yes | 8.3 | |||||||
| 10 | AIRTaaS | Yes | Free | Yes | Yes | Yes | Yes | 8.2 | ||
| 11 | OpenSecureAI Scanner | Yes | $49/mo | Yes | Yes | Yes | Yes | Both | 8.1 | |
| 12 | Prompt Security AI Red Teaming | Yes | Yes | Yes | Yes | Both | 8.0 | |||
| 13 | Basilisk | Yes | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 7.9 |
| 14 | DeepTeam | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 7.8 | |
| 15 | garak | Yes | Free | 7.7 | ||||||
| 16 | Augustus | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 7.6 | |
| 17 | PyRIT | Yes | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 7.5 |
| 18 | AIRTA Red Team | Yes | Free | Yes | Yes | Yes | Yes | Self_hosted | 7.4 | |
| 19 | Project Moonshot | Yes | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 7.3 |
| 20 | SENTINEL RED | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 7.2 | |
| 21 | HarmBench | Yes | Free | 7.1 | ||||||
| 22 | PromptRAID | Free | Yes | Yes | No | Self_hosted | 7.0 | |||
| 23 | Red Team LLM Lab | Yes | Free | Yes | Yes | Yes | Yes | Self_hosted | 6.9 | |
| 24 | SuperRed | Yes | Free | Yes | Yes | Yes | Yes | Yes | Self_hosted | 6.8 |
| 25 | InjectLab | Free | Yes | Yes | Yes | Yes | Self_hosted | 6.7 | ||
| 26 | LLMMap | Free | Yes | Yes | Yes | Self_hosted | 6.6 | |||
| 27 | RAMPART | Free | Yes | Yes | Yes | Yes | Self_hosted | 6.5 | ||
| 28 | AgentDojo | Yes | Free | Yes | Yes | Yes | Self_hosted | 6.4 | ||
| 29 | CyberSecEval | Yes | Free | Yes | Yes | Yes | Self_hosted | 6.3 |
Head-to-head All 28 comparisons →
- PromptGuard vs Akto Agentic Red Teaming
- PromptGuard vs Mindgard
- PromptGuard vs F5 AI Red Team
- PromptGuard vs Promptfoo
- PromptGuard vs RedForge
- PromptGuard vs AgentScan
- PromptGuard vs Crucible
- Akto Agentic Red Teaming vs Mindgard
- Akto Agentic Red Teaming vs F5 AI Red Team
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How we rank AI security testing tools
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update