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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/mo7.1
    PII Firewall vs Enkrypt AI Guardrails
  2. 2
    OpenSecureAI Prompt Firewall Free plan self-hostedWeb $49/mo7.1
    PII Firewall vs OpenSecureAI Prompt Firewall
  3. 3
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.1
    PII Firewall vs PromptGuard
  4. 4
    Fiddler Guardrails Free plan apiself-hostedWeb Free7.0
    PII Firewall vs Fiddler Guardrails
  5. 5
    Openlayer Guardrails Free plan apiself-hostedWeb Free7.0
    PII Firewall vs Openlayer Guardrails
  6. 6
    Amazon Bedrock Guardrails Web $0.07/mo6.9
    PII Firewall vs Amazon Bedrock Guardrails
  7. 7
    VotalAI Free trial apiself-hostedWeb 6.9
    PII Firewall vs VotalAI
  8. 9
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 6.6
    PII Firewall vs HiddenLayer AI Runtime Security
  9. 10
    Guardrails AI apiself-hostedWeb 6.4
    PII Firewall vs Guardrails AI
  10. 11
    OpenAI Guardrails apiself-hostedWeb 6.4
    PII Firewall vs OpenAI Guardrails
  11. 12
    Pangea AI Guard apiextensionself-hosted 6.4
    PII Firewall vs Pangea AI Guard
  12. 13
    Radware Alteon apiLinuxself-hostedWeb 6.3
    PII Firewall vs Radware Alteon
  13. 14
    Check Point AI Guardrails apiself-hostedWeb 6.2
    PII Firewall vs Check Point AI Guardrails
  14. 15
    OpenGuardrails apiself-hostedWeb $10/mo6.1
    PII Firewall vs OpenGuardrails
  15. 16
    Oracle Mobile Authenticator AndroidiOSWin 6.1
    PII Firewall vs Oracle Mobile Authenticator
  16. 17
    Amazon Nova ReelAmazon Web Services apiWeb 6.0
    PII Firewall vs Amazon Nova Reel
  17. 18
    Microsoft Custom Neural Voice Web 5.9
    PII Firewall vs Microsoft Custom Neural Voice
  18. 19
    NVIDIA NeMo Guardrails 5.4
    PII Firewall vs NVIDIA NeMo Guardrails
  19. 20
    CyberSecEval Free plan apiLinuxself-hosted Free5.2
    PII Firewall vs CyberSecEval
  20. 21
    LLM Guard 4.9
    PII Firewall vs LLM Guard

PII Firewall alternatives compared

#PlatformScoreFree planFromRuns on
1Enkrypt AI Guardrails7.1Free plan$134/moAPI, self-hosted, Web
2OpenSecureAI Prompt Firewall7.1Free plan$49/moself-hosted, Web
3PromptGuard7.1Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
4Fiddler Guardrails7.0Free planFreeAPI, self-hosted, Web
5Openlayer Guardrails7.0Free planFreeAPI, self-hosted, Web
6Amazon Bedrock Guardrails6.9No$0.07/moWeb
7VotalAI6.9No—API, self-hosted, Web
9HiddenLayer AI Runtime Security6.6No—API, Linux, self-hosted, Web
10Guardrails AI6.4No—API, self-hosted, Web
11OpenAI Guardrails6.4No—API, self-hosted, Web
12Pangea AI Guard6.4No—API, Browser, self-hosted
13Radware Alteon6.3No—API, Linux, self-hosted, Web
14Check Point AI Guardrails6.2No—API, self-hosted, Web
15OpenGuardrails6.1No$10/moAPI, self-hosted, Web
16Oracle Mobile Authenticator6.1No—Android, iOS, Windows
17Amazon Nova Reel6.0No—API, Web
18Microsoft Custom Neural Voice5.9No—Web
19NVIDIA NeMo Guardrails5.4No——
20CyberSecEval5.2Free planFreeAPI, Linux, self-hosted
21LLM Guard4.9No——
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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 7.1 out of 10. The others here: OpenSecureAI Prompt Firewall, PromptGuard, Fiddler Guardrails and 16 more.

What is the best free alternative to PII Firewall?

Enkrypt AI Guardrails is the best-ranked alternative with a free plan. 6 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.