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Best Prompt Inspector Alternatives in 2026

Updated

20 apps from LLM security tools ranked against Prompt Inspector on the same published basis.

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.2
    Prompt Inspector vs PromptGuard
  2. 3
    Amazon Bedrock Guardrails Web $0.07/mo6.8
    Prompt Inspector vs Amazon Bedrock Guardrails
  3. 4
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    Prompt Inspector vs Openlayer Guardrails
  4. 5
    GLACIS Free plan apiself-hostedWeb Free6.7
    Prompt Inspector vs GLACIS
  5. 6
    Inferwall apiLinuxMacWin 6.5
    Prompt Inspector vs Inferwall
  6. 7
    WitnessAI apiWebWin 6.5
    Prompt Inspector vs WitnessAI
  7. 8
    GuardionAI Free trial apiLinuxMacself-hostedWeb 6.4
    Prompt Inspector vs GuardionAI
  8. 9
    Guardrails AI apiself-hostedWeb 6.3
    Prompt Inspector vs Guardrails AI
  9. 10
    Lasso AI Security Platform apiextensionWeb 6.3
    Prompt Inspector vs Lasso AI Security Platform
  10. 11
    Sanctum Runtime AndroidapiiOSself-hostedWeb 6.3
    Prompt Inspector vs Sanctum Runtime
  11. 12
    VotalAI Free trial apiself-hostedWeb 6.3
    Prompt Inspector vs VotalAI
  12. 13
    Amazon Nova ReelAmazon Web Services apiWeb 6.2
    Prompt Inspector vs Amazon Nova Reel
  13. 14
    Check Point AI Guardrails apiself-hostedWeb 6.2
    Prompt Inspector vs Check Point AI Guardrails
  14. 15
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo6.2
    Prompt Inspector vs HiddenLayer AI Guardrails
  15. 16
    Noma Security apiself-hostedWeb 6.2
    Prompt Inspector vs Noma Security
  16. 17
    Prisma AIRS AI Gateway apiself-hostedWeb 6.2
    Prompt Inspector vs Prisma AIRS AI Gateway
  17. 18
    SecureAI Guard apiself-hostedWeb $2,999/mo6.0
    Prompt Inspector vs SecureAI Guard
  18. 19
    ZeroTrusted AI Firewall self-hostedWeb 6.0
    Prompt Inspector vs ZeroTrusted AI Firewall
  19. 20
    Microsoft Custom Neural Voice Web 5.8
    Prompt Inspector vs Microsoft Custom Neural Voice
  20. 21
    NVIDIA NeMo Guardrails 5.6
    Prompt Inspector vs NVIDIA NeMo Guardrails

Prompt Inspector alternatives compared

#AppScoreFree planFromRuns on
1PromptGuard7.2Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
3Amazon Bedrock Guardrails6.8No$0.07/moWeb
4Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
5GLACIS6.7Free planFreeAPI, self-hosted, Web
6Inferwall6.5No—API, Linux, Mac, Windows
7WitnessAI6.5No—API, Web, Windows
8GuardionAI6.4No—API, Linux, Mac, self-hosted, Web, Windows
9Guardrails AI6.3No—API, self-hosted, Web
10Lasso AI Security Platform6.3No—API, Browser, Web
11Sanctum Runtime6.3No—Android, API, iOS, self-hosted, Web
12VotalAI6.3No—API, self-hosted, Web
13Amazon Nova Reel6.2No—API, Web
14Check Point AI Guardrails6.2No—API, self-hosted, Web
15HiddenLayer AI Guardrails6.2No$416666.67/moself-hosted, Web
16Noma Security6.2No—API, self-hosted, Web
17Prisma AIRS AI Gateway6.2No—API, self-hosted, Web
18SecureAI Guard6.0No$2,999/moAPI, self-hosted, Web
19ZeroTrusted AI Firewall6.0No—self-hosted, Web
20Microsoft Custom Neural Voice5.8No—Web
21NVIDIA NeMo Guardrails5.6No——
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Questions about Prompt Inspector alternatives

What is the best alternative to Prompt Inspector?

PromptGuard, number 1 in LLM security tools with a score of 7.2 out of 10. The others here: Amazon Bedrock Guardrails, Openlayer Guardrails, GLACIS and 16 more.

What is the best free alternative to Prompt Inspector?

PromptGuard is the best-ranked alternative with a free plan. 3 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: documentation depth, a free tier and the platforms it runs on.