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Best PII Firewall Alternatives in 2026

Updated

20 platforms from AI guardrail software ranked against PII Firewall on the same published basis.

  1. 1
    Enkrypt AI Guardrails Free plan apiself-hostedWeb $134/mo7.4
    PII Firewall vs Enkrypt AI Guardrails
  2. 2
    Fiddler Guardrails Free plan apiself-hostedWeb Free7.3
    PII Firewall vs Fiddler Guardrails
  3. 3
    Openlayer Guardrails Free plan apiself-hostedWeb Free7.3
    PII Firewall vs Openlayer Guardrails
  4. 4
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    PII Firewall vs PromptGuard
  5. 5
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 7.0
    PII Firewall vs HiddenLayer AI Runtime Security
  6. 6
    OpenAI Guardrails apiself-hostedWeb 7.0
    PII Firewall vs OpenAI Guardrails
  7. 7
    Pangea AI Guard apiextensionself-hosted 7.0
    PII Firewall vs Pangea AI Guard
  8. 8
    Guardrails AI apiself-hostedWeb 6.9
    PII Firewall vs Guardrails AI
  9. 9
    OpenGuardrails apiself-hostedWeb $10/mo6.8
    PII Firewall vs OpenGuardrails
  10. 10
    Radware Alteon apiLinuxself-hostedWeb 6.8
    PII Firewall vs Radware Alteon
  11. 11
    Amazon Nova ReelAmazon Web Services api 6.5
    PII Firewall vs Amazon Nova Reel
  12. 12
    OpenSecureAI Prompt Firewall Free plan self-hostedWeb $49/mo6.0
    PII Firewall vs OpenSecureAI Prompt Firewall
  13. 13
    Amazon Bedrock Guardrails Web $0.07/mo5.9
    PII Firewall vs Amazon Bedrock Guardrails
  14. 14
    Microsoft Custom Neural Voice Web 5.2
    PII Firewall vs Microsoft Custom Neural Voice
  15. 15
    Oracle Mobile Authenticator AndroidiOSWin 5.2
    PII Firewall vs Oracle Mobile Authenticator
  16. 17
    Check Point AI Guardrails Web 5.0
    PII Firewall vs Check Point AI Guardrails
  17. 18
    NVIDIA NeMo Guardrails 4.9
    PII Firewall vs NVIDIA NeMo Guardrails
  18. 19
    CyberSecEval 4.8
    PII Firewall vs CyberSecEval
  19. 20
    VotalAI Web 4.8
    PII Firewall vs VotalAI
  20. 21
    LLM Guard 4.6
    PII Firewall vs LLM Guard

PII Firewall alternatives compared

#PlatformScoreFree planFromRuns on
1Enkrypt AI Guardrails7.4Free plan$134/moAPI, self-hosted, Web
2Fiddler Guardrails7.3Free planFreeAPI, self-hosted, Web
3Openlayer Guardrails7.3Free planFreeAPI, self-hosted, Web
4PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
5HiddenLayer AI Runtime Security7.0No—API, Linux, self-hosted, Web
6OpenAI Guardrails7.0No—API, self-hosted, Web
7Pangea AI Guard7.0No—API, Browser, self-hosted
8Guardrails AI6.9No—API, self-hosted, Web
9OpenGuardrails6.8No$10/moAPI, self-hosted, Web
10Radware Alteon6.8No—API, Linux, self-hosted, Web
11Amazon Nova Reel6.5No—API
12OpenSecureAI Prompt Firewall6.0Free plan$49/moself-hosted, Web
13Amazon Bedrock Guardrails5.9No$0.07/moWeb
14Microsoft Custom Neural Voice5.2No—Web
15Oracle Mobile Authenticator5.2No—Android, iOS, Windows
17Check Point AI Guardrails5.0No—Web
18NVIDIA NeMo Guardrails4.9No——
19CyberSecEval4.8No——
20VotalAI4.8No—Web
21LLM Guard4.6No——
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Questions about PII Firewall alternatives

What is the best alternative to PII Firewall?

Enkrypt AI Guardrails, number 1 in AI guardrail software with a score of 7.4 out of 10. The others here: Fiddler Guardrails, Openlayer Guardrails, PromptGuard and 16 more.

What is the best free alternative to PII Firewall?

Enkrypt AI Guardrails is the best-ranked alternative with a free plan. 5 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.