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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
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo6.6
    OpenSecureAI Prompt Firewall vs PromptGuard
  2. 2
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free6.5
    OpenSecureAI Prompt Firewall vs NVIDIA NeMo Guardrails
  3. 3
    Amazon Bedrock Guardrails Web $0.07/mo6.4
    OpenSecureAI Prompt Firewall vs Amazon Bedrock Guardrails
  4. 4
    Enkrypt AI Guardrails Free plan apiself-hostedWeb $134/mo6.4
    OpenSecureAI Prompt Firewall vs Enkrypt AI Guardrails
  5. 5
    Fiddler Guardrails Free plan apiself-hostedWeb Free6.4
    OpenSecureAI Prompt Firewall vs Fiddler Guardrails
  6. 6
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.4
    OpenSecureAI Prompt Firewall vs Openlayer Guardrails
  7. 8
    CyberSecEval Free plan apiLinuxself-hosted Free6.3
    OpenSecureAI Prompt Firewall vs CyberSecEval
  8. 9
    LLM Guard Free plan apiLinuxself-hosted Free6.3
    OpenSecureAI Prompt Firewall vs LLM Guard
  9. 10
    PII Firewall Free plan Linuxself-hosted Free6.3
    OpenSecureAI Prompt Firewall vs PII Firewall
  10. 11
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 5.5
    OpenSecureAI Prompt Firewall vs HiddenLayer AI Runtime Security
  11. 12
    Check Point AI Guardrails apiself-hostedWeb 5.4
    OpenSecureAI Prompt Firewall vs Check Point AI Guardrails
  12. 13
    Guardrails AI apiself-hostedWeb 5.4
    OpenSecureAI Prompt Firewall vs Guardrails AI
  13. 14
    OpenAI Guardrails apiself-hostedWeb 5.4
    OpenSecureAI Prompt Firewall vs OpenAI Guardrails
  14. 15
    Oracle Mobile Authenticator Free plan AndroidiOSWin Free5.4
    OpenSecureAI Prompt Firewall vs Oracle Mobile Authenticator
  15. 16
    Pangea AI Guard apiextensionself-hosted 5.4
    OpenSecureAI Prompt Firewall vs Pangea AI Guard
  16. 17
    VotalAI Free trial apiself-hostedWeb 5.4
    OpenSecureAI Prompt Firewall vs VotalAI
  17. 18
    Microsoft Custom Neural Voice Web 5.2
    OpenSecureAI Prompt Firewall vs Microsoft Custom Neural Voice
  18. 19
    Amazon Nova ReelAmazon Web Services apiWeb 5.1
    OpenSecureAI Prompt Firewall vs Amazon Nova Reel
  19. 20
    Radware Alteon apiLinuxself-hostedWeb 5.1
    OpenSecureAI Prompt Firewall vs Radware Alteon
  20. 21
    OpenGuardrails apiself-hostedWeb $10/mo5.0
    OpenSecureAI Prompt Firewall vs OpenGuardrails

OpenSecureAI Prompt Firewall alternatives compared

#AppScoreFree planFromRuns on
1PromptGuard6.6Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2NVIDIA NeMo Guardrails6.5Free planFreeAPI, Linux, Mac, self-hosted, Windows
3Amazon Bedrock Guardrails6.4$0.07/moWeb
4Enkrypt AI Guardrails6.4Free plan$134/moAPI, self-hosted, Web
5Fiddler Guardrails6.4Free planFreeAPI, self-hosted, Web
6Openlayer Guardrails6.4Free planFreeAPI, self-hosted, Web
8CyberSecEval6.3Free planFreeAPI, Linux, self-hosted
9LLM Guard6.3Free planFreeAPI, Linux, self-hosted
10PII Firewall6.3Free planFreeLinux, self-hosted
11HiddenLayer AI Runtime Security5.5API, Linux, self-hosted, Web
12Check Point AI Guardrails5.4API, self-hosted, Web
13Guardrails AI5.4API, self-hosted, Web
14OpenAI Guardrails5.4API, self-hosted, Web
15Oracle Mobile Authenticator5.4Free planFreeAndroid, iOS, Windows
16Pangea AI Guard5.4API, Browser, self-hosted
17VotalAI5.4API, self-hosted, Web
18Microsoft Custom Neural Voice5.2Web
19Amazon Nova Reel5.1API, Web
20Radware Alteon5.1API, Linux, self-hosted, Web
21OpenGuardrails5.0No$10/moAPI, self-hosted, Web
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Questions about OpenSecureAI Prompt Firewall alternatives

What is the best alternative to OpenSecureAI Prompt Firewall?

PromptGuard, number 1 in AI guardrail software with a score of 6.6 out of 10. The others here: NVIDIA NeMo Guardrails, Amazon Bedrock Guardrails, Enkrypt AI Guardrails and 16 more.

What is the best free alternative to OpenSecureAI Prompt Firewall?

PromptGuard is the best-ranked alternative with a free plan. 9 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.