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Best OpenSecureAI Prompt Firewall Alternatives in 2026

Updated

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

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    OpenSecureAI Prompt Firewall vs PromptGuard
  2. 2
    Enkrypt AI Guardrails Free plan apiself-hostedWeb $134/mo7.1
    OpenSecureAI Prompt Firewall vs Enkrypt AI Guardrails
  3. 3
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free7.1
    OpenSecureAI Prompt Firewall vs NVIDIA NeMo Guardrails
  4. 4
    Fiddler Guardrails Free plan apiself-hostedWeb Free7.0
    OpenSecureAI Prompt Firewall vs Fiddler Guardrails
  5. 6
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.9
    OpenSecureAI Prompt Firewall vs Openlayer Guardrails
  6. 7
    Amazon Bedrock Guardrails Web $0.07/mo6.8
    OpenSecureAI Prompt Firewall vs Amazon Bedrock Guardrails
  7. 8
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 6.8
    OpenSecureAI Prompt Firewall vs HiddenLayer AI Runtime Security
  8. 9
    VotalAI Free trial apiself-hostedWeb 6.8
    OpenSecureAI Prompt Firewall vs VotalAI
  9. 10
    CyberSecEval Free plan apiLinuxself-hosted Free6.7
    OpenSecureAI Prompt Firewall vs CyberSecEval
  10. 11
    PII Firewall Free plan Linuxself-hosted Free6.7
    OpenSecureAI Prompt Firewall vs PII Firewall
  11. 12
    LLM Guard Free plan apiLinuxself-hosted Free6.6
    OpenSecureAI Prompt Firewall vs LLM Guard
  12. 13
    OpenAI Guardrails apiself-hostedWeb 6.6
    OpenSecureAI Prompt Firewall vs OpenAI Guardrails
  13. 14
    Radware Alteon apiLinuxself-hostedWeb 6.6
    OpenSecureAI Prompt Firewall vs Radware Alteon
  14. 15
    Guardrails AI apiself-hostedWeb 6.5
    OpenSecureAI Prompt Firewall vs Guardrails AI
  15. 16
    Pangea AI Guard apiextensionself-hosted 6.5
    OpenSecureAI Prompt Firewall vs Pangea AI Guard
  16. 17
    Amazon Nova ReelAmazon Web Services apiWeb 6.4
    OpenSecureAI Prompt Firewall vs Amazon Nova Reel
  17. 18
    Check Point AI Guardrails apiself-hostedWeb 6.4
    OpenSecureAI Prompt Firewall vs Check Point AI Guardrails
  18. 19
    OpenGuardrails apiself-hostedWeb $10/mo6.4
    OpenSecureAI Prompt Firewall vs OpenGuardrails
  19. 20
    Oracle Mobile Authenticator Free plan AndroidiOSWin Free6.3
    OpenSecureAI Prompt Firewall vs Oracle Mobile Authenticator
  20. 21
    Microsoft Custom Neural Voice Web 6.0
    OpenSecureAI Prompt Firewall vs Microsoft Custom Neural Voice

OpenSecureAI Prompt Firewall alternatives compared

#ToolScoreFree planFromRuns on
1PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2Enkrypt AI Guardrails7.1Free plan$134/moAPI, self-hosted, Web
3NVIDIA NeMo Guardrails7.1Free planFreeAPI, Linux, Mac, self-hosted, Windows
4Fiddler Guardrails7.0Free planFreeAPI, self-hosted, Web
6Openlayer Guardrails6.9Free planFreeAPI, self-hosted, Web
7Amazon Bedrock Guardrails6.8$0.07/moWeb
8HiddenLayer AI Runtime Security6.8API, Linux, self-hosted, Web
9VotalAI6.8API, self-hosted, Web
10CyberSecEval6.7Free planFreeAPI, Linux, self-hosted
11PII Firewall6.7Free planFreeLinux, self-hosted
12LLM Guard6.6Free planFreeAPI, Linux, self-hosted
13OpenAI Guardrails6.6API, self-hosted, Web
14Radware Alteon6.6API, Linux, self-hosted, Web
15Guardrails AI6.5API, self-hosted, Web
16Pangea AI Guard6.5API, Browser, self-hosted
17Amazon Nova Reel6.4API, Web
18Check Point AI Guardrails6.4API, self-hosted, Web
19OpenGuardrails6.4No$10/moAPI, self-hosted, Web
20Oracle Mobile Authenticator6.3Free planFreeAndroid, iOS, Windows
21Microsoft Custom Neural Voice6.0Web
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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 7.3 out of 10. The others here: Enkrypt AI Guardrails, NVIDIA NeMo Guardrails, Fiddler 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 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.