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Best ZeroTrusted AI Firewall Alternatives in 2026

Updated

20 apps from LLM security tools ranked against ZeroTrusted AI Firewall on the same published basis.

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.2
    ZeroTrusted AI Firewall vs PromptGuard
  2. 2
    Prompt Inspector Free plan apiLinuxMacself-hostedWeb Free7.1
    ZeroTrusted AI Firewall vs Prompt Inspector
  3. 3
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free7.0
    ZeroTrusted AI Firewall vs NVIDIA NeMo Guardrails
  4. 4
    Amazon Bedrock Guardrails Web $0.07/mo6.8
    ZeroTrusted AI Firewall vs Amazon Bedrock Guardrails
  5. 5
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    ZeroTrusted AI Firewall vs Openlayer Guardrails
  6. 6
    GLACIS Free plan apiself-hostedWeb Free6.7
    ZeroTrusted AI Firewall vs GLACIS
  7. 7
    LLM Guard Free plan apiLinuxself-hosted Free6.7
    ZeroTrusted AI Firewall vs LLM Guard
  8. 8
    CyberSecEval Free plan apiLinuxself-hosted Free6.6
    ZeroTrusted AI Firewall vs CyberSecEval
  9. 9
    Sanctum Runtime AndroidapiiOSLinuxself-hosted 6.6
    ZeroTrusted AI Firewall vs Sanctum Runtime
  10. 10
    Inferwall apiLinuxMacWin 6.5
    ZeroTrusted AI Firewall vs Inferwall
  11. 11
    WitnessAI apiWebWin 6.5
    ZeroTrusted AI Firewall vs WitnessAI
  12. 12
    GuardionAI Free trial apiLinuxMacself-hostedWeb 6.4
    ZeroTrusted AI Firewall vs GuardionAI
  13. 13
    Guardrails AI apiself-hostedWeb 6.3
    ZeroTrusted AI Firewall vs Guardrails AI
  14. 14
    Lasso AI Security Platform apiextensionWeb 6.3
    ZeroTrusted AI Firewall vs Lasso AI Security Platform
  15. 15
    VotalAI Free trial apiself-hostedWeb 6.3
    ZeroTrusted AI Firewall vs VotalAI
  16. 16
    Amazon Nova ReelAmazon Web Services apiWeb 6.2
    ZeroTrusted AI Firewall vs Amazon Nova Reel
  17. 17
    Check Point AI Guardrails apiself-hostedWeb 6.2
    ZeroTrusted AI Firewall vs Check Point AI Guardrails
  18. 18
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo6.2
    ZeroTrusted AI Firewall vs HiddenLayer AI Guardrails
  19. 19
    Noma Security apiself-hostedWeb 6.2
    ZeroTrusted AI Firewall vs Noma Security
  20. 20
    Prisma AIRS AI Gateway apiself-hostedWeb 6.2
    ZeroTrusted AI Firewall vs Prisma AIRS AI Gateway

ZeroTrusted AI Firewall alternatives compared

#AppScoreFree planFromRuns on
1PromptGuard7.2Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2Prompt Inspector7.1Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
3NVIDIA NeMo Guardrails7.0Free planFreeAPI, Linux, Mac, self-hosted, Windows
4Amazon Bedrock Guardrails6.8No$0.07/moWeb
5Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
6GLACIS6.7Free planFreeAPI, self-hosted, Web
7LLM Guard6.7Free planFreeAPI, Linux, self-hosted
8CyberSecEval6.6Free planFreeAPI, Linux, self-hosted
9Sanctum Runtime6.6No—Android, API, iOS, Linux, self-hosted, Web
10Inferwall6.5No—API, Linux, Mac, Windows
11WitnessAI6.5No—API, Web, Windows
12GuardionAI6.4No—API, Linux, Mac, self-hosted, Web, Windows
13Guardrails AI6.3No—API, self-hosted, Web
14Lasso AI Security Platform6.3No—API, Browser, Web
15VotalAI6.3No—API, self-hosted, Web
16Amazon Nova Reel6.2No—API, Web
17Check Point AI Guardrails6.2No—API, self-hosted, Web
18HiddenLayer AI Guardrails6.2No$416666.67/moself-hosted, Web
19Noma Security6.2No—API, self-hosted, Web
20Prisma AIRS AI Gateway6.2No—API, self-hosted, Web
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Questions about ZeroTrusted AI Firewall alternatives

What is the best alternative to ZeroTrusted AI Firewall?

PromptGuard, number 1 in LLM security tools with a score of 7.2 out of 10. The others here: Prompt Inspector, NVIDIA NeMo Guardrails, Amazon Bedrock Guardrails and 16 more.

What is the best free alternative to ZeroTrusted AI Firewall?

PromptGuard is the best-ranked alternative with a free plan. 7 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.