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Best ZeroTrusted AI Firewall Alternatives in 2026

Updated

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

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    ZeroTrusted AI Firewall vs PromptGuard
  2. 2
    GLACIS Free plan apiself-hostedWeb Free7.2
    ZeroTrusted AI Firewall vs GLACIS
  3. 3
    Openlayer Guardrails Free plan apiself-hostedWeb Free7.2
    ZeroTrusted AI Firewall vs Openlayer Guardrails
  4. 4
    Prompt Inspector Free plan apiLinuxMacself-hostedWeb Free7.2
    ZeroTrusted AI Firewall vs Prompt Inspector
  5. 5
    Lasso AI Security Platform apiextensionWeb 7.0
    ZeroTrusted AI Firewall vs Lasso AI Security Platform
  6. 6
    Guardrails AI apiself-hostedWeb 6.9
    ZeroTrusted AI Firewall vs Guardrails AI
  7. 7
    Inferwall apiLinuxMacWin 6.9
    ZeroTrusted AI Firewall vs Inferwall
  8. 8
    Prisma AIRS AI Gateway apiself-hostedWeb 6.9
    ZeroTrusted AI Firewall vs Prisma AIRS AI Gateway
  9. 9
    VotalAI Free trial apiself-hostedWeb 6.9
    ZeroTrusted AI Firewall vs VotalAI
  10. 10
    WitnessAI apiWebWin 6.9
    ZeroTrusted AI Firewall vs WitnessAI
  11. 11
    Amazon Nova ReelAmazon Web Services apiWeb 6.8
    ZeroTrusted AI Firewall vs Amazon Nova Reel
  12. 12
    Check Point AI Guardrails apiself-hostedWeb 6.8
    ZeroTrusted AI Firewall vs Check Point AI Guardrails
  13. 13
    Noma Security apiself-hostedWeb 6.8
    ZeroTrusted AI Firewall vs Noma Security
  14. 14
    GuardionAI Free trial apiLinuxMacself-hostedWeb 6.7
    ZeroTrusted AI Firewall vs GuardionAI
  15. 15
    Sanctum Runtime AndroidapiiOSself-hostedWeb 6.7
    ZeroTrusted AI Firewall vs Sanctum Runtime
  16. 16
    SecureAI Guard apiself-hostedWeb $2,999/mo6.7
    ZeroTrusted AI Firewall vs SecureAI Guard
  17. 17
    Amazon Bedrock Guardrails Web $0.07/mo5.9
    ZeroTrusted AI Firewall vs Amazon Bedrock Guardrails
  18. 18
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo5.4
    ZeroTrusted AI Firewall vs HiddenLayer AI Guardrails
  19. 20
    Microsoft Custom Neural Voice Web 5.2
    ZeroTrusted AI Firewall vs Microsoft Custom Neural Voice
  20. 21
    LLM Guard 5.1
    ZeroTrusted AI Firewall vs LLM Guard

ZeroTrusted AI Firewall alternatives compared

#PlatformScoreFree planFromRuns on
1PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2GLACIS7.2Free planFreeAPI, self-hosted, Web
3Openlayer Guardrails7.2Free planFreeAPI, self-hosted, Web
4Prompt Inspector7.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
5Lasso AI Security Platform7.0No—API, Browser, Web
6Guardrails AI6.9No—API, self-hosted, Web
7Inferwall6.9No—API, Linux, Mac, Windows
8Prisma AIRS AI Gateway6.9No—API, self-hosted, Web
9VotalAI6.9No—API, self-hosted, Web
10WitnessAI6.9No—API, Web, Windows
11Amazon Nova Reel6.8No—API, Web
12Check Point AI Guardrails6.8No—API, self-hosted, Web
13Noma Security6.8No—API, self-hosted, Web
14GuardionAI6.7No—API, Linux, Mac, self-hosted, Web, Windows
15Sanctum Runtime6.7No—Android, API, iOS, self-hosted, Web
16SecureAI Guard6.7No$2,999/moAPI, self-hosted, Web
17Amazon Bedrock Guardrails5.9No$0.07/moWeb
18HiddenLayer AI Guardrails5.4No$416666.67/moself-hosted, Web
20Microsoft Custom Neural Voice5.2No—Web
21LLM Guard5.1No——
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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 7.3 out of 10. The others here: GLACIS, Openlayer Guardrails, Prompt Inspector and 16 more.

What is the best free alternative to ZeroTrusted AI Firewall?

PromptGuard is the best-ranked alternative with a free plan. 4 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.