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Alternatives · 2026

The best OpenAI Guardrails alternatives

The rest of Best AI Guardrail Software, in this site's order: each with what it costs, where it runs and its record score.

1
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.

WebWindowsMac+4 $19 a month Record5.7 Visit
2
NVIDIA NeMo Guardrails

NeMo Guardrails is for developers and teams building LLM applications that need configurable policy checks.

WindowsMacLinux+2 Free plan Record5.4 Visit
3
Enkrypt AI Guardrails

It is intended for enterprises securing AI deployments, AI safety researchers and people building safer AI systems.

WebAPISelf-hosted $1,608 a year Record5.2 Visit
4
CyberSecEval

CyberSecEval suits people evaluating cybersecurity risks or defensive behavior in large language models.

WebMacLinux+2 Free plan Record5.1 Visit
5 AndroidiPhone & iPadWindows Free plan Record5.0 Visit
6
OpenSecureAI Prompt Firewall

Prompt Firewall suits AI application teams shipping LLM features and developers building agents.

WebSelf-hosted $49 a month Record4.7 Visit
7 WebAPISelf-hosted Free plan Record4.6 Visit
8
VotalAI

VotalAI is aimed at enterprise AI teams, including platform and security engineers, that need policies and visibility around agent prompts, outputs,…

WebAPISelf-hosted Free plan Record4.5 Visit
9
Guardrails AI

It may suit teams building chatbots, RAG pipelines, or agents that need checks for risks such as PII exposure or jailbreaks.

WebAPISelf-hosted Free plan Record4.3 Visit
10
Openlayer Guardrails

It suits engineering, AI, security, compliance, and finance teams that need to enforce policies on live AI traffic.

WebAPISelf-hosted Free plan Record4.3 Visit
11
LLM Guard

It is aimed at developers building LLM applications who want self-hosted prompt and output scanners or documented integrations.

LinuxAPISelf-hosted Free plan Record4.2 Visit
12 WebAPISelf-hosted $10 a month Record4.2 Visit
13
PII Firewall

It is suited to teams handling sensitive information in healthcare, finance, or legal workflows that use LLMs.

LinuxSelf-hosted Free plan Record4.2 Visit
14
Pangea AI Guard

It suits teams protecting direct LLM interactions, agent exchanges, or RAG pipelines.

Browser extensionAPISelf-hosted Free plan Record4.1 Visit
15
HiddenLayer AI Runtime Security

It is presented for enterprise security teams protecting production AI applications, autonomous agents, and coding-agent workflows.

WebLinuxAPI+1 — Record3.9 Visit
16 Web Free plan Record3.8 Visit
17
Check Point AI Guardrails

It is aimed at organizations governing enterprise LLM applications and agent interactions.

WebAPISelf-hosted — Record3.6 Visit
18 Web $100 a month, billed yearly Record3.3 Visit
19
Amazon Bedrock Guardrails

Amazon Bedrock Guardrails suits users seeking cloud-based checks for model interactions, including prompt attacks, sensitive information and output…

Web $0.07 usage-based Record3.2 Visit
20 — Record2.3 Visit
21 Web — Record2.3 Visit
22 — Record2.3 Visit