Best AI Guardrail Software in 2026
Updated
In short: PromptGuard is ranked #1 of 21 as of 4 October 2026, ahead of Enkrypt AI Guardrails and OpenSecureAI Prompt Firewall. The best-ranked option with a free plan is Enkrypt AI Guardrails. The lowest first paid tier on this page is Amazon Bedrock Guardrails at $0.07/mo.
AI guardrail software provides controls for managing risks around AI systems and workflows. Compare how products handle custom policies, jailbreak detection, prompt injection defense, and PII detection, then consider deployment options and supported SDK languages. Free-plan availability and paid-from pricing add cost context. The ranking opens with PromptGuard, Enkrypt AI Guardrails, and OpenSecureAI Prompt Firewall. Fiddler Guardrails and Openlayer Guardrails are also among the early entries, alongside Pangea AI Guard. Check the listed protections and integration details against the safeguards and deployment needs of your intended use.
21 AI guardrail software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 PromptGuard Top pick · 7.3 Free plan · $19/mo
#2 Enkrypt AI Guardrails Runner-up · 7.0 Free plan · $11.17/mo
#3 OpenSecureAI Prompt Firewall Also great · 7.0 Free plan · $49/mo- Free plan apiextensionLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms$19/mofirst paid tier About PromptGuardVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 134 /mo
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms$11.17/mofirst paid tier About Enkrypt AI GuardrailsVisit site - Free plan self-hostedWeb
- Free plan
- Yes
- Paid from
- 49 /mo
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms$49/mofirst paid tier About OpenSecureAI Prompt FirewallVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms$0.07/mofirst paid tier About Amazon Bedrock GuardrailsVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms - apiLinuxself-hostedWeb
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms - apiself-hostedWeb
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms - apiextensionself-hosted
- Free plan
- Yes
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms - apiLinuxself-hostedWeb
- Deployment
- cloud
- Prompt injection defense
- Yes
- PII detection
- Yes
- Jailbreak detection
- Yes
RecognisedDocumentedFree planPlatforms - AndroidiOSWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WebRecognisedDocumentedFree planPlatforms
- Linux
- Deployment
- self_hosted
- Prompt injection defense
- No
- PII detection
- Yes
- Jailbreak detection
- No
RecognisedDocumentedFree planPlatforms - api
- Free plan
- No
RecognisedDocumentedFree planPlatforms - WebRecognisedDocumentedFree planPlatforms
- Web
- Free plan
- No
- Paid from
- 10 /mo
- Deployment
- hybrid
- Prompt injection defense
- Yes
- PII detection
- Yes
RecognisedDocumentedFree planPlatforms - RecognisedDocumentedFree planPlatforms
- WebRecognisedDocumentedFree planPlatforms
-
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WebRecognisedDocumentedFree planPlatforms
- RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI guardrail software is ranked first on Everything Xiaomi?
PromptGuard is ranked #1 of 21 with a score of 7.3. Enkrypt AI Guardrails is second and OpenSecureAI Prompt Firewall third.
How many of these have a free plan?
5 of the 21 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Amazon Bedrock Guardrails has the lowest first paid tier we found: $0.07/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.