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Best OpenSecureAI Prompt Firewall Alternatives in 2026

Updated

20 apps from AI guardrail software ranked against OpenSecureAI Prompt Firewall on the same published basis.

  1. 1
    Oracle Mobile Authenticator AndroidiOSWin 6.9
    OpenSecureAI Prompt Firewall vs Oracle Mobile Authenticator
  2. 2
    Enkrypt AI Guardrails Free plan apiself-hostedWeb $134/mo6.4
    OpenSecureAI Prompt Firewall vs Enkrypt AI Guardrails
  3. 4
    Amazon Bedrock Guardrails Web $0.07/mo6.3
    OpenSecureAI Prompt Firewall vs Amazon Bedrock Guardrails
  4. 5
    Fiddler Guardrails Free plan apiself-hostedWeb Free6.3
    OpenSecureAI Prompt Firewall vs Fiddler Guardrails
  5. 6
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.3
    OpenSecureAI Prompt Firewall vs Openlayer Guardrails
  6. 7
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo6.3
    OpenSecureAI Prompt Firewall vs PromptGuard
  7. 8
    CyberSecEval Free plan apiLinuxself-hosted Free6.2
    OpenSecureAI Prompt Firewall vs CyberSecEval
  8. 9
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free6.2
    OpenSecureAI Prompt Firewall vs NVIDIA NeMo Guardrails
  9. 10
    PII Firewall Free plan Linuxself-hosted Free6.2
    OpenSecureAI Prompt Firewall vs PII Firewall
  10. 11
    LLM Guard Free plan apiLinuxself-hosted Free6.1
    OpenSecureAI Prompt Firewall vs LLM Guard
  11. 12
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 5.8
    OpenSecureAI Prompt Firewall vs HiddenLayer AI Runtime Security
  12. 13
    OpenAI Guardrails apiself-hostedWeb 5.8
    OpenSecureAI Prompt Firewall vs OpenAI Guardrails
  13. 14
    Pangea AI Guard apiextensionself-hosted 5.8
    OpenSecureAI Prompt Firewall vs Pangea AI Guard
  14. 15
    Guardrails AI apiself-hostedWeb 5.7
    OpenSecureAI Prompt Firewall vs Guardrails AI
  15. 16
    VotalAI Free trial apiself-hostedWeb 5.7
    OpenSecureAI Prompt Firewall vs VotalAI
  16. 17
    Amazon Nova ReelAmazon Web Services apiWeb 5.6
    OpenSecureAI Prompt Firewall vs Amazon Nova Reel
  17. 18
    Check Point AI Guardrails apiself-hostedWeb 5.6
    OpenSecureAI Prompt Firewall vs Check Point AI Guardrails
  18. 19
    Radware Alteon apiLinuxself-hostedWeb 5.6
    OpenSecureAI Prompt Firewall vs Radware Alteon
  19. 20
    OpenGuardrails apiself-hostedWeb $10/mo5.5
    OpenSecureAI Prompt Firewall vs OpenGuardrails
  20. 21
    Microsoft Custom Neural Voice Web 5.4
    OpenSecureAI Prompt Firewall vs Microsoft Custom Neural Voice

OpenSecureAI Prompt Firewall alternatives compared

#AppScoreFree planFromRuns on
1Oracle Mobile Authenticator6.9No—Android, iOS, Windows
2Enkrypt AI Guardrails6.4Free plan$134/moAPI, self-hosted, Web
4Amazon Bedrock Guardrails6.3No$0.07/moWeb
5Fiddler Guardrails6.3Free planFreeAPI, self-hosted, Web
6Openlayer Guardrails6.3Free planFreeAPI, self-hosted, Web
7PromptGuard6.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
8CyberSecEval6.2Free planFreeAPI, Linux, self-hosted
9NVIDIA NeMo Guardrails6.2Free planFreeAPI, Linux, Mac, self-hosted, Windows
10PII Firewall6.2Free planFreeLinux, self-hosted
11LLM Guard6.1Free planFreeAPI, Linux, self-hosted
12HiddenLayer AI Runtime Security5.8No—API, Linux, self-hosted, Web
13OpenAI Guardrails5.8No—API, self-hosted, Web
14Pangea AI Guard5.8No—API, Browser, self-hosted
15Guardrails AI5.7No—API, self-hosted, Web
16VotalAI5.7No—API, self-hosted, Web
17Amazon Nova Reel5.6No—API, Web
18Check Point AI Guardrails5.6No—API, self-hosted, Web
19Radware Alteon5.6No—API, Linux, self-hosted, Web
20OpenGuardrails5.5No$10/moAPI, self-hosted, Web
21Microsoft Custom Neural Voice5.4No—Web
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Questions about OpenSecureAI Prompt Firewall alternatives

What is the best alternative to OpenSecureAI Prompt Firewall?

Oracle Mobile Authenticator, number 1 in AI guardrail software with a score of 6.9 out of 10. The others here: Enkrypt AI Guardrails, Amazon Bedrock Guardrails, Fiddler Guardrails and 16 more.

What is the best free alternative to OpenSecureAI Prompt Firewall?

Enkrypt AI Guardrails is the best-ranked alternative with a free plan. 8 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.