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Best WitnessAI Alternatives in 2026

Updated

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

  1. 1
    Prompt Inspector Free plan apiLinuxMacself-hostedWeb Free7.3
    WitnessAI vs Prompt Inspector
  2. 2
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    WitnessAI vs PromptGuard
  3. 3
    NVIDIA NeMo Guardrails Free plan apiLinuxMacself-hostedWin Free7.2
    WitnessAI vs NVIDIA NeMo Guardrails
  4. 4
    GuardionAI Free trial apiLinuxMacself-hostedWeb 7.1
    WitnessAI vs GuardionAI
  5. 5
    Sanctum Runtime AndroidapiiOSLinuxself-hosted 7.0
    WitnessAI vs Sanctum Runtime
  6. 6
    Amazon Bedrock Guardrails Web $0.07/mo6.9
    WitnessAI vs Amazon Bedrock Guardrails
  7. 7
    VotalAI Free trial apiself-hostedWeb 6.9
    WitnessAI vs VotalAI
  8. 8
    Inferwall apiLinuxMacWin 6.8
    WitnessAI vs Inferwall
  9. 9
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    WitnessAI vs Openlayer Guardrails
  10. 11
    GLACIS Free plan apiself-hostedWeb Free6.7
    WitnessAI vs GLACIS
  11. 12
    LLM Guard Free plan apiLinuxself-hosted Free6.7
    WitnessAI vs LLM Guard
  12. 13
    CyberSecEval Free plan apiLinuxself-hosted Free6.6
    WitnessAI vs CyberSecEval
  13. 14
    Guardrails AI apiself-hostedWeb 6.6
    WitnessAI vs Guardrails AI
  14. 15
    Lasso AI Security Platform apiextensionWeb 6.6
    WitnessAI vs Lasso AI Security Platform
  15. 16
    Rocotal Web 6.6
    WitnessAI vs Rocotal
  16. 17
    Vigil Guard Free trial apiextensionLinuxself-hosted 6.6
    WitnessAI vs Vigil Guard
  17. 18
    Amazon Nova ReelAmazon Web Services apiWeb 6.4
    WitnessAI vs Amazon Nova Reel
  18. 19
    Check Point AI Guardrails apiself-hostedWeb 6.4
    WitnessAI vs Check Point AI Guardrails
  19. 20
    HiddenLayer AI Guardrails self-hostedWeb $416666.67/mo6.4
    WitnessAI vs HiddenLayer AI Guardrails
  20. 21
    Noma Security apiself-hostedWeb 6.4
    WitnessAI vs Noma Security

WitnessAI alternatives compared

#ToolScoreFree planFromRuns on
1Prompt Inspector7.3Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
2PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
3NVIDIA NeMo Guardrails7.2Free planFreeAPI, Linux, Mac, self-hosted, Windows
4GuardionAI7.1API, Linux, Mac, self-hosted, Web, Windows
5Sanctum Runtime7.0Android, API, iOS, Linux, self-hosted, Web
6Amazon Bedrock Guardrails6.9$0.07/moWeb
7VotalAI6.9API, self-hosted, Web
8Inferwall6.8API, Linux, Mac, Windows
9Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
11GLACIS6.7Free planFreeAPI, self-hosted, Web
12LLM Guard6.7Free planFreeAPI, Linux, self-hosted
13CyberSecEval6.6Free planFreeAPI, Linux, self-hosted
14Guardrails AI6.6API, self-hosted, Web
15Lasso AI Security Platform6.6API, Browser, Web
16Rocotal6.6Web
17Vigil Guard6.6API, Browser, Linux, self-hosted
18Amazon Nova Reel6.4API, Web
19Check Point AI Guardrails6.4API, self-hosted, Web
20HiddenLayer AI Guardrails6.4$416666.67/moself-hosted, Web
21Noma Security6.4API, self-hosted, Web
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Questions about WitnessAI alternatives

What is the best alternative to WitnessAI?

Prompt Inspector, number 1 in LLM security tools with a score of 7.3 out of 10. The others here: PromptGuard, NVIDIA NeMo Guardrails, GuardionAI and 16 more.

What is the best free alternative to WitnessAI?

Prompt Inspector 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, 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.