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Best Prompt Inspector Alternatives in 2026

Updated

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

  1. 1
    Openlayer Guardrails Free plan apiself-hostedWeb Free7.3
    Prompt Inspector vs Openlayer Guardrails
  2. 3
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    Prompt Inspector vs PromptGuard
  3. 4
    GLACIS Free plan apiself-hostedWeb Free7.2
    Prompt Inspector vs GLACIS
  4. 5
    Guardrails AI apiself-hostedWeb 7.0
    Prompt Inspector vs Guardrails AI
  5. 6
    Lasso AI Security Platform apiextensionWeb 7.0
    Prompt Inspector vs Lasso AI Security Platform
  6. 7
    WitnessAI apiWebWin 7.0
    Prompt Inspector vs WitnessAI
  7. 8
    Inferwall apiLinuxMacWin 6.9
    Prompt Inspector vs Inferwall
  8. 9
    Prisma AIRS AI Gateway apiself-hostedWeb 6.9
    Prompt Inspector vs Prisma AIRS AI Gateway
  9. 10
    SecureAI Guard apiself-hostedWeb $2,999/mo6.8
    Prompt Inspector vs SecureAI Guard
  10. 11
    GuardionAI Free trial apiLinuxMacself-hostedWeb 6.7
    Prompt Inspector vs GuardionAI
  11. 12
    Sanctum Runtime AndroidapiiOSself-hostedWeb 6.7
    Prompt Inspector vs Sanctum Runtime
  12. 13
    Amazon Nova ReelAmazon Web Services apiWeb 6.6
    Prompt Inspector vs Amazon Nova Reel
  13. 14
    Amazon Bedrock Guardrails Web $0.07/mo5.9
    Prompt Inspector vs Amazon Bedrock Guardrails
  14. 15
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo5.5
    Prompt Inspector vs HiddenLayer AI Guardrails
  15. 16
    ZeroTrusted AI Firewall self-hostedWeb 5.3
    Prompt Inspector vs ZeroTrusted AI Firewall
  16. 17
    Check Point AI Guardrails Web 5.2
    Prompt Inspector vs Check Point AI Guardrails
  17. 18
    Microsoft Custom Neural Voice Web 5.2
    Prompt Inspector vs Microsoft Custom Neural Voice
  18. 19
    Noma Security 5.2
    Prompt Inspector vs Noma Security
  19. 20
    Straiker Defend AI 5.2
    Prompt Inspector vs Straiker Defend AI
  20. 21
    LLM Guard 5.1
    Prompt Inspector vs LLM Guard

Prompt Inspector alternatives compared

#PlatformScoreFree planFromRuns on
1Openlayer Guardrails7.3Free planFreeAPI, self-hosted, Web
3PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
4GLACIS7.2Free planFreeAPI, self-hosted, Web
5Guardrails AI7.0No—API, self-hosted, Web
6Lasso AI Security Platform7.0No—API, Browser, Web
7WitnessAI7.0No—API, Web, Windows
8Inferwall6.9No—API, Linux, Mac, Windows
9Prisma AIRS AI Gateway6.9No—API, self-hosted, Web
10SecureAI Guard6.8No$2,999/moAPI, self-hosted, Web
11GuardionAI6.7No—API, Linux, Mac, self-hosted, Web, Windows
12Sanctum Runtime6.7No—Android, API, iOS, self-hosted, Web
13Amazon Nova Reel6.6No—API, Web
14Amazon Bedrock Guardrails5.9No$0.07/moWeb
15HiddenLayer AI Guardrails5.5No$416666.67/moself-hosted, Web
16ZeroTrusted AI Firewall5.3No—self-hosted, Web
17Check Point AI Guardrails5.2No—Web
18Microsoft Custom Neural Voice5.2No—Web
19Noma Security5.2No——
20Straiker Defend AI5.2No——
21LLM Guard5.1No——
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Questions about Prompt Inspector alternatives

What is the best alternative to Prompt Inspector?

Openlayer Guardrails, number 1 in LLM security tools with a score of 7.3 out of 10. The others here: PromptGuard, GLACIS, Guardrails AI and 16 more.

What is the best free alternative to Prompt Inspector?

Openlayer Guardrails 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, 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.