It suits application teams that want to inspect LLM requests before they reach a provider, including for prompt injection, PII, or data leakage risks.
Free plan From $19 a month WebWindowsMacLinuxBrowser extensionAPI+1
Best AI Guardrail Software 2026
Facts read 21 Sep 2026 – 15 Oct 2026
AI guardrail software gives teams ways to define protections and assess risks around AI systems. Compare custom policies with jailbreak detection, prompt injection defense, and PII detection. Deployment choices and SDK languages can help you judge how an option may fit your stack; also check free-plan availability and paid-from pricing. Enkrypt AI Guardrails, Amazon Bedrock Guardrails, and OpenAI Guardrails are among the products to assess. Weigh the stated safeguards and integration details against your intended use, and check that the policy controls address the risks and deployment needs you have.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 PromptGuard | It suits application teams that want to inspect LLM requests before they reach a provider, including for prompt injection, PII, or data leakage risks. | 5.7 | $19 a month | Free plan | Web, Windows, Mac, Linux | 14 Oct 2026 |
| 02 NVIDIA NeMo Guardrails | NeMo Guardrails is for developers and teams building LLM applications that need configurable policy checks. | 5.4 | Free plan | Free plan | Windows, Mac, Linux, API | 15 Oct 2026 |
| 03 CyberSecEval | CyberSecEval suits people evaluating cybersecurity risks or defensive behavior in large language models. | 5.1 | Free plan | Free plan | Web, Mac, Linux, API | 15 Oct 2026 |
| 04 Enkrypt AI Guardrails | It is intended for enterprises securing AI deployments, AI safety researchers and people building safer AI systems. | 5.1 | $1,608 a year | Free plan | Web, API, Self-hosted | 30 Sep 2026 |
| 05 Oracle Mobile Authenticator | 5.0 | Free plan | Free plan | Android, iPhone & iPad, Windows | 11 Oct 2026 | |
| 06 OpenSecureAI Prompt Firewall | Prompt Firewall suits AI application teams shipping LLM features and developers building agents. | 4.7 | $49 a month | Free plan | Web, Self-hosted | 2 Oct 2026 |
| 07 Fiddler Guardrails | 4.5 | Free plan | Free plan | Web, API, Self-hosted | 30 Sep 2026 | |
| 08 VotalAI | VotalAI is aimed at enterprise AI teams, including platform and security engineers, that need policies and visibility around agent prompts, outputs, and tool calls. | 4.5 | Free plan | Free plan | Web, API, Self-hosted | 7 Oct 2026 |
| 09 Guardrails AI | It may suit teams building chatbots, RAG pipelines, or agents that need checks for risks such as PII exposure or jailbreaks. | 4.2 | Free plan | Free plan | Web, API, Self-hosted | 5 Oct 2026 |
| 10 LLM Guard | It is aimed at developers building LLM applications who want self-hosted prompt and output scanners or documented integrations. | 4.2 | Free plan | Free plan | Linux, API, Self-hosted | 9 Oct 2026 |
02
NVIDIA NeMo Guardrails
NeMo Guardrails is for developers and teams building LLM applications that need configurable policy checks.
WindowsMacLinux+2 Record5.4 Visit
03
CyberSecEval
CyberSecEval suits people evaluating cybersecurity risks or defensive behavior in large language models.
WebMacLinux+2 Record5.1 Visit
04
Enkrypt AI Guardrails
It is intended for enterprises securing AI deployments, AI safety researchers and people building safer AI systems.
WebAPISelf-hosted Record5.1 Visit
05
Oracle Mobile Authenticator
AndroidiPhone & iPadWindows Record5.0 Visit
6
OpenSecureAI Prompt Firewall
WebSelf-hosted $49 a month Record4.7 Visit Prompt Firewall suits AI application teams shipping LLM features and developers building agents.
8
VotalAI
WebAPISelf-hosted Free plan Record4.5 Visit VotalAI is aimed at enterprise AI teams, including platform and security engineers, that need policies and visibility around agent prompts, outputs, and tool calls.
9
Guardrails AI
WebAPISelf-hosted Free plan Record4.2 Visit It may suit teams building chatbots, RAG pipelines, or agents that need checks for risks such as PII exposure or jailbreaks.
10
LLM Guard
LinuxAPISelf-hosted Free plan Record4.2 Visit It is aimed at developers building LLM applications who want self-hosted prompt and output scanners or documented integrations.
11
Openlayer Guardrails
WebAPISelf-hosted Free plan Record4.2 Visit It suits engineering, AI, security, compliance, and finance teams that need to enforce policies on live AI traffic.
12
PII Firewall
LinuxSelf-hosted Free plan Record4.2 Visit It is suited to teams handling sensitive information in healthcare, finance, or legal workflows that use LLMs.
14
Pangea AI Guard
Browser extensionAPISelf-hosted Free plan Record4.0 Visit It suits teams protecting direct LLM interactions, agent exchanges, or RAG pipelines.
15
HiddenLayer AI Runtime Security
WebLinuxAPI+1 — Record3.8 Visit It is presented for enterprise security teams protecting production AI applications, autonomous agents, and coding-agent workflows.
16
Check Point AI Guardrails
WebAPISelf-hosted — Record3.6 Visit It is aimed at organizations governing enterprise LLM applications and agent interactions.
18
OpenAI Guardrails
WebAPISelf-hosted Free Record3.6 Visit It suits developers adding configurable safety checks to LLM applications, including teams using OpenAI clients, the Agents SDK, Azure OpenAI, or compatible APIs.
20
Amazon Bedrock Guardrails
Web $0.07 usage-based Record3.1 Visit Amazon Bedrock Guardrails suits users seeking cloud-based checks for model interactions, including prompt attacks, sensitive information and output controls.
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