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Best WitnessAI Alternatives in 2026

Updated

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

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.2
    WitnessAI vs PromptGuard
  2. 2
    Prompt Inspector Free plan apiLinuxMacself-hostedWeb Free7.1
    WitnessAI vs Prompt Inspector
  3. 3
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free7.0
    WitnessAI vs NVIDIA NeMo Guardrails
  4. 4
    Amazon Bedrock Guardrails Web $0.07/mo6.8
    WitnessAI vs Amazon Bedrock Guardrails
  5. 5
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    WitnessAI vs Openlayer Guardrails
  6. 6
    GLACIS Free plan apiself-hostedWeb Free6.7
    WitnessAI vs GLACIS
  7. 7
    LLM Guard Free plan apiLinuxself-hosted Free6.7
    WitnessAI vs LLM Guard
  8. 8
    CyberSecEval Free plan apiLinuxself-hosted Free6.6
    WitnessAI vs CyberSecEval
  9. 9
    Sanctum Runtime AndroidapiiOSLinuxself-hosted 6.6
    WitnessAI vs Sanctum Runtime
  10. 10
    Inferwall apiLinuxMacWin 6.5
    WitnessAI vs Inferwall
  11. 12
    GuardionAI Free trial apiLinuxMacself-hostedWeb 6.4
    WitnessAI vs GuardionAI
  12. 13
    Guardrails AI apiself-hostedWeb 6.3
    WitnessAI vs Guardrails AI
  13. 14
    Lasso AI Security Platform apiextensionWeb 6.3
    WitnessAI vs Lasso AI Security Platform
  14. 15
    Rocotal Web 6.3
    WitnessAI vs Rocotal
  15. 16
    VotalAI Free trial apiself-hostedWeb 6.3
    WitnessAI vs VotalAI
  16. 17
    Amazon Nova ReelAmazon Web Services apiWeb 6.2
    WitnessAI vs Amazon Nova Reel
  17. 18
    Check Point AI Guardrails apiself-hostedWeb 6.2
    WitnessAI vs Check Point AI Guardrails
  18. 19
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo6.2
    WitnessAI vs HiddenLayer AI Guardrails
  19. 20
    Noma Security apiself-hostedWeb 6.2
    WitnessAI vs Noma Security
  20. 21
    Prisma AIRS AI Gateway apiself-hostedWeb 6.2
    WitnessAI vs Prisma AIRS AI Gateway

WitnessAI alternatives compared

#AppScoreFree planFromRuns on
1PromptGuard7.2Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2Prompt Inspector7.1Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
3NVIDIA NeMo Guardrails7.0Free planFreeAPI, Linux, Mac, self-hosted, Windows
4Amazon Bedrock Guardrails6.8$0.07/moWeb
5Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
6GLACIS6.7Free planFreeAPI, self-hosted, Web
7LLM Guard6.7Free planFreeAPI, Linux, self-hosted
8CyberSecEval6.6Free planFreeAPI, Linux, self-hosted
9Sanctum Runtime6.6Android, API, iOS, Linux, self-hosted, Web
10Inferwall6.5API, Linux, Mac, Windows
12GuardionAI6.4API, Linux, Mac, self-hosted, Web, Windows
13Guardrails AI6.3API, self-hosted, Web
14Lasso AI Security Platform6.3API, Browser, Web
15Rocotal6.3Web
16VotalAI6.3API, self-hosted, Web
17Amazon Nova Reel6.2API, Web
18Check Point AI Guardrails6.2API, self-hosted, Web
19HiddenLayer AI Guardrails6.2$416666.67/moself-hosted, Web
20Noma Security6.2API, self-hosted, Web
21Prisma AIRS AI Gateway6.2API, self-hosted, Web
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Questions about WitnessAI alternatives

What is the best alternative to WitnessAI?

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

What is the best free alternative to WitnessAI?

PromptGuard is the best-ranked alternative with a free plan. 7 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.