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Best PII Firewall Alternatives in 2026

Updated

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

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    PII Firewall vs PromptGuard
  2. 2
    Enkrypt AI Guardrails Free plan apiself-hostedWeb $134/mo7.1
    PII Firewall vs Enkrypt AI Guardrails
  3. 3
    OpenSecureAI Prompt Firewall Free plan self-hostedWeb $49/mo7.1
    PII Firewall vs OpenSecureAI Prompt Firewall
  4. 4
    Fiddler Guardrails Free plan apiself-hostedWeb Free7.0
    PII Firewall vs Fiddler Guardrails
  5. 5
    Amazon Bedrock Guardrails Web $0.07/mo6.9
    PII Firewall vs Amazon Bedrock Guardrails
  6. 6
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 6.9
    PII Firewall vs HiddenLayer AI Runtime Security
  7. 7
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.9
    PII Firewall vs Openlayer Guardrails
  8. 8
    Radware Alteon apiLinuxself-hostedWeb 6.7
    PII Firewall vs Radware Alteon
  9. 9
    Guardrails AI apiself-hostedWeb 6.6
    PII Firewall vs Guardrails AI
  10. 10
    OpenAI Guardrails apiself-hostedWeb 6.6
    PII Firewall vs OpenAI Guardrails
  11. 11
    Pangea AI Guard apiextensionself-hosted 6.5
    PII Firewall vs Pangea AI Guard
  12. 12
    OpenGuardrails apiself-hostedWeb $10/mo6.4
    PII Firewall vs OpenGuardrails
  13. 13
    Oracle Mobile Authenticator AndroidiOSWin 6.4
    PII Firewall vs Oracle Mobile Authenticator
  14. 14
    Microsoft Custom Neural Voice Web 6.0
    PII Firewall vs Microsoft Custom Neural Voice
  15. 16
    Check Point AI Guardrails Web 5.7
    PII Firewall vs Check Point AI Guardrails
  16. 17
    Amazon Nova ReelAmazon Web Services apiWeb 5.6
    PII Firewall vs Amazon Nova Reel
  17. 18
    NVIDIA NeMo Guardrails 5.3
    PII Firewall vs NVIDIA NeMo Guardrails
  18. 19
    VotalAI Free trial apiself-hostedWeb 5.2
    PII Firewall vs VotalAI
  19. 20
    CyberSecEval 5.0
    PII Firewall vs CyberSecEval
  20. 21
    LLM Guard 4.7
    PII Firewall vs LLM Guard

PII 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
3OpenSecureAI Prompt Firewall7.1Free plan$49/moself-hosted, Web
4Fiddler Guardrails7.0Free planFreeAPI, self-hosted, Web
5Amazon Bedrock Guardrails6.9No$0.07/moWeb
6HiddenLayer AI Runtime Security6.9No—API, Linux, self-hosted, Web
7Openlayer Guardrails6.9Free planFreeAPI, self-hosted, Web
8Radware Alteon6.7No—API, Linux, self-hosted, Web
9Guardrails AI6.6No—API, self-hosted, Web
10OpenAI Guardrails6.6No—API, self-hosted, Web
11Pangea AI Guard6.5No—API, Browser, self-hosted
12OpenGuardrails6.4No$10/moAPI, self-hosted, Web
13Oracle Mobile Authenticator6.4No—Android, iOS, Windows
14Microsoft Custom Neural Voice6.0No—Web
16Check Point AI Guardrails5.7No—Web
17Amazon Nova Reel5.6No—API, Web
18NVIDIA NeMo Guardrails5.3No——
19VotalAI5.2No—API, self-hosted, Web
20CyberSecEval5.0No——
21LLM Guard4.7No——
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Questions about PII Firewall alternatives

What is the best alternative to PII Firewall?

PromptGuard, number 1 in AI guardrail software with a score of 7.3 out of 10. The others here: Enkrypt AI Guardrails, OpenSecureAI Prompt Firewall, Fiddler Guardrails and 16 more.

What is the best free alternative to PII Firewall?

PromptGuard 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, 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.