Best LLM Security Tools in 2026
Updated
28 LLM security tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
28ranked
0free plans on this page
7 Oct 2026last checked
Input list LLM Security Tools 3 channels on this page · 5 of 24 spec lines stated by the makers
Ch Tool Free planPaid fromPrompt injection defensePII redactionSecrets detectionOutput guardrailsModel-abuse detectionDeployment model Spec sheet Score
26 Vigil Guard Free plannot statedPaid fromnot statedPrompt injection defenseYesPII redactionYesSecrets detectionYesOutput guardrailsYesModel-abuse detectionnot statedDeployment modelnot stated 4/8spec lines stated 5.6
27 CyberSecEval Free planYesPaid fromnot statedPrompt injection defensenot statedPII redactionnot statedSecrets detectionnot statedOutput guardrailsnot statedModel-abuse detectionnot statedDeployment modelnot stated 1/8spec lines stated 5.0
28 Prompt Security AI Red Teaming Free plannot statedPaid fromnot statedPrompt injection defensenot statedPII redactionnot statedSecrets detectionnot statedOutput guardrailsnot statedModel-abuse detectionnot statedDeployment modelnot stated 0/8spec lines stated 4.9
Compare all 3 in a table
| # | Tool | Score | Free plan | Free plan | Paid from | Prompt injection defense | PII redaction |
|---|---|---|---|---|---|---|---|
| 26 | Vigil Guard | 5.6 | No | — | — | Yes | Yes |
| 27 | CyberSecEval | 5.0 | No | Yes | — | — | — |
| 28 | Prompt Security AI Red Teaming | 4.9 | No | — | — | — | — |
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