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Best Prompt Inspector Alternatives in 2026

Updated

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

  1. 2
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    Prompt Inspector vs PromptGuard
  2. 3
    GuardionAI Free trial apiLinuxMacself-hostedWeb 7.1
    Prompt Inspector vs GuardionAI
  3. 4
    Amazon Bedrock Guardrails Web $0.07/mo6.9
    Prompt Inspector vs Amazon Bedrock Guardrails
  4. 5
    VotalAI Free trial apiself-hostedWeb 6.9
    Prompt Inspector vs VotalAI
  5. 6
    Inferwall apiLinuxMacWin 6.8
    Prompt Inspector vs Inferwall
  6. 7
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    Prompt Inspector vs Openlayer Guardrails
  7. 8
    WitnessAI apiWebWin 6.8
    Prompt Inspector vs WitnessAI
  8. 9
    GLACIS Free plan apiself-hostedWeb Free6.7
    Prompt Inspector vs GLACIS
  9. 10
    Guardrails AI apiself-hostedWeb 6.6
    Prompt Inspector vs Guardrails AI
  10. 11
    Lasso AI Security Platform apiextensionWeb 6.6
    Prompt Inspector vs Lasso AI Security Platform
  11. 12
    Sanctum Runtime AndroidapiiOSself-hostedWeb 6.5
    Prompt Inspector vs Sanctum Runtime
  12. 13
    Amazon Nova ReelAmazon Web Services apiWeb 6.4
    Prompt Inspector vs Amazon Nova Reel
  13. 14
    Check Point AI Guardrails apiself-hostedWeb 6.4
    Prompt Inspector vs Check Point AI Guardrails
  14. 15
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo6.4
    Prompt Inspector vs HiddenLayer AI Guardrails
  15. 16
    Noma Security apiself-hostedWeb 6.4
    Prompt Inspector vs Noma Security
  16. 17
    Prisma AIRS AI Gateway apiself-hostedWeb 6.4
    Prompt Inspector vs Prisma AIRS AI Gateway
  17. 18
    SecureAI Guard apiself-hostedWeb $2,999/mo6.3
    Prompt Inspector vs SecureAI Guard
  18. 19
    ZeroTrusted AI Firewall self-hostedWeb 6.3
    Prompt Inspector vs ZeroTrusted AI Firewall
  19. 20
    Microsoft Custom Neural Voice Web 5.9
    Prompt Inspector vs Microsoft Custom Neural Voice
  20. 21
    Cloudflare Advanced Certificate Manager Web $10/mo5.7
    Prompt Inspector vs Cloudflare Advanced Certificate Manager

Prompt Inspector alternatives compared

#ToolScoreFree planFromRuns on
2PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
3GuardionAI7.1No—API, Linux, Mac, self-hosted, Web, Windows
4Amazon Bedrock Guardrails6.9No$0.07/moWeb
5VotalAI6.9No—API, self-hosted, Web
6Inferwall6.8No—API, Linux, Mac, Windows
7Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
8WitnessAI6.8No—API, Web, Windows
9GLACIS6.7Free planFreeAPI, self-hosted, Web
10Guardrails AI6.6No—API, self-hosted, Web
11Lasso AI Security Platform6.6No—API, Browser, Web
12Sanctum Runtime6.5No—Android, API, iOS, self-hosted, Web
13Amazon Nova Reel6.4No—API, Web
14Check Point AI Guardrails6.4No—API, self-hosted, Web
15HiddenLayer AI Guardrails6.4No$416666.67/moself-hosted, Web
16Noma Security6.4No—API, self-hosted, Web
17Prisma AIRS AI Gateway6.4No—API, self-hosted, Web
18SecureAI Guard6.3No$2,999/moAPI, self-hosted, Web
19ZeroTrusted AI Firewall6.3No—self-hosted, Web
20Microsoft Custom Neural Voice5.9No—Web
21Cloudflare Advanced Certificate Manager5.7No$10/moWeb
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Questions about Prompt Inspector alternatives

What is the best alternative to Prompt Inspector?

PromptGuard, number 2 in LLM security tools with a score of 7.3 out of 10. The others here: GuardionAI, Amazon Bedrock Guardrails, VotalAI 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, 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.