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Best ZeroTrusted AI Firewall Alternatives in 2026

Updated

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

  1. 1
    Prompt Inspector Free plan apiLinuxMacself-hostedWeb Free7.3
    ZeroTrusted AI Firewall vs Prompt Inspector
  2. 2
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    ZeroTrusted AI Firewall vs PromptGuard
  3. 3
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free7.2
    ZeroTrusted AI Firewall vs NVIDIA NeMo Guardrails
  4. 4
    GuardionAI Free trial apiLinuxMacself-hostedWeb 7.1
    ZeroTrusted AI Firewall vs GuardionAI
  5. 5
    Sanctum Runtime AndroidapiiOSLinuxself-hosted 7.0
    ZeroTrusted AI Firewall vs Sanctum Runtime
  6. 6
    Amazon Bedrock Guardrails Web $0.07/mo6.9
    ZeroTrusted AI Firewall vs Amazon Bedrock Guardrails
  7. 7
    VotalAI Free trial apiself-hostedWeb 6.9
    ZeroTrusted AI Firewall vs VotalAI
  8. 8
    Inferwall apiLinuxMacWin 6.8
    ZeroTrusted AI Firewall vs Inferwall
  9. 9
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    ZeroTrusted AI Firewall vs Openlayer Guardrails
  10. 10
    WitnessAI apiWebWin 6.8
    ZeroTrusted AI Firewall vs WitnessAI
  11. 11
    GLACIS Free plan apiself-hostedWeb Free6.7
    ZeroTrusted AI Firewall vs GLACIS
  12. 12
    LLM Guard Free plan apiLinuxself-hosted Free6.7
    ZeroTrusted AI Firewall vs LLM Guard
  13. 13
    CyberSecEval Free plan apiLinuxself-hosted Free6.6
    ZeroTrusted AI Firewall vs CyberSecEval
  14. 14
    Guardrails AI apiself-hostedWeb 6.6
    ZeroTrusted AI Firewall vs Guardrails AI
  15. 15
    Lasso AI Security Platform apiextensionWeb 6.6
    ZeroTrusted AI Firewall vs Lasso AI Security Platform
  16. 16
    Amazon Nova ReelAmazon Web Services apiWeb 6.4
    ZeroTrusted AI Firewall vs Amazon Nova Reel
  17. 17
    Check Point AI Guardrails apiself-hostedWeb 6.4
    ZeroTrusted AI Firewall vs Check Point AI Guardrails
  18. 18
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo6.4
    ZeroTrusted AI Firewall vs HiddenLayer AI Guardrails
  19. 19
    Noma Security apiself-hostedWeb 6.4
    ZeroTrusted AI Firewall vs Noma Security
  20. 20
    Prisma AIRS AI Gateway apiself-hostedWeb 6.4
    ZeroTrusted AI Firewall vs Prisma AIRS AI Gateway

ZeroTrusted AI Firewall alternatives compared

#ToolScoreFree planFromRuns on
1Prompt Inspector7.3Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
2PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
3NVIDIA NeMo Guardrails7.2Free planFreeAPI, Linux, Mac, self-hosted, Windows
4GuardionAI7.1No—API, Linux, Mac, self-hosted, Web, Windows
5Sanctum Runtime7.0No—Android, API, iOS, Linux, self-hosted, Web
6Amazon Bedrock Guardrails6.9No$0.07/moWeb
7VotalAI6.9No—API, self-hosted, Web
8Inferwall6.8No—API, Linux, Mac, Windows
9Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
10WitnessAI6.8No—API, Web, Windows
11GLACIS6.7Free planFreeAPI, self-hosted, Web
12LLM Guard6.7Free planFreeAPI, Linux, self-hosted
13CyberSecEval6.6Free planFreeAPI, Linux, self-hosted
14Guardrails AI6.6No—API, self-hosted, Web
15Lasso AI Security Platform6.6No—API, Browser, Web
16Amazon Nova Reel6.4No—API, Web
17Check Point AI Guardrails6.4No—API, self-hosted, Web
18HiddenLayer AI Guardrails6.4No$416666.67/moself-hosted, Web
19Noma Security6.4No—API, self-hosted, Web
20Prisma AIRS AI Gateway6.4No—API, self-hosted, Web
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Questions about ZeroTrusted AI Firewall alternatives

What is the best alternative to ZeroTrusted AI Firewall?

Prompt Inspector, number 1 in LLM security tools with a score of 7.3 out of 10. The others here: PromptGuard, NVIDIA NeMo Guardrails, GuardionAI and 16 more.

What is the best free alternative to ZeroTrusted AI Firewall?

Prompt Inspector 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, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.