Best Promptfoo Guardrails Alternatives & Competitors in 2026

RealmGuard

AI guardrail platform detecting harmful outputs, prompt injections & policy violations.

Confident Security

Platform for securing, governing, and monitoring AI/LLM deployments.

PointGuard AI Intelligent Guardrails

Runtime guardrails for LLM prompts/responses: detects data leaks & prompt injection.

First Recon AI Firewall

Inline firewall inspecting AI prompts/responses for injections & policy violations.

Airia AI Platform Guardrails

Runtime AI guardrails securing prompts, outputs, and agent workflows.

AI Security Gateway™

OpenAI-compatible proxy for LLM DLP, PII redaction, and cost governance.

SlashLLM

AI security platform proxying LLM traffic with guardrails, SOC, and governance.

ThirdLaw AI Control Layer

Runtime AI policy enforcement: capture, evaluate, intervene, and investigate AI sessions.

Senthex AI Firewall

Proxy-based AI firewall with 26 shields and verifiable audit trail for LLMs.

Guardrails AI OSS

Open-source framework for real-time LLM safety, policy & compliance enforcement.

Portkey Guardrails for Bedrock

Configurable guardrails for Amazon Bedrock AI requests via an API gateway.

Vijil Dome

Runtime LLM guardrails blocking prompt injections, PII leakage & policy violations.

Openlayer LLM Observability

LLM pipeline observability: tracing, monitoring, and alerting for GenAI systems.

Pangea AI Security Platform

Platform securing AI apps and employee AI use via guardrails & threat detection.

AI Model Guardrails

Runtime AI guardrails platform enforcing policies on LLM prompts and responses.

Vulcan Protect

Runtime guardrail platform that monitors and protects GenAI inputs/outputs in production

LLM Guard

LLM Guard is a security toolkit that enhances the safety and security of interactions with Large Language Models (LLMs) by providing features like sanitization, harmful language detection, data leakage prevention, and resistance against prompt injection attacks.

CloudMatos Prompt Firewall

Firewall for LLM systems preventing prompt injection, data leaks & jailbreaks

Alibaba Cloud AI Guardrails

Real-time AI content moderation and prompt injection defense for AIGC applications.

Impart LLM Security

LLM security platform detecting prompt injection, jailbreaks, and abuse

Prompt Security Platform

SentinelOne's Prompt Security: AI security platform plus open-source agent/LLM tools

CyCraft XecGuard

AI guardrail module protecting LLMs from prompt injection and jailbreak attacks

Magier AI

End-to-end LLM security platform protecting GenAI interactions & applications

Secured AI

Privacy-first AI assistant that protects sensitive information while preserving context.

Barrikade Core

Prompt-injection detection and stateful session controls for AI agents

DeepKeep LLM

End-to-end LLM security platform protecting against attacks and data leakage

Eroun&Company SAIFE X

GenAI security platform protecting against data leaks and prompt attacks

FireGuard

Policy enforcement & monitoring layer for Microsoft Copilot deployments.

Akamai Firewall for AI

Firewall protecting LLMs from prompt attacks, data leaks, and harmful outputs

Tumerik AI Trust Score™

Real-time AI application security with trust scoring and guardrails

Alice WonderFence

Runtime guardrails for GenAI apps providing real-time threat detection & response

DeepKeep AI Firewall

Runtime protection firewall for AI systems and applications

VicOne xPhinx

Edge AI security for in-vehicle systems against prompt injection attacks

Dynamo AI DynamoGuard

Real-time AI guardrails platform for detecting misuse, hallucinations & attacks

Fiddler Guardrails

Guardrails for protecting LLM and agentic applications from harmful content

AIShield Guardian

Middleware guardrail securing LLM inputs/outputs for enterprise GenAI compliance.

Repello AI ARGUS

Runtime security platform providing guardrails for LLMs and GenAI agents.

TrojAI Defend

AI firewall for runtime protection of AI models, applications, and agents

KELA AiFort

Security platform for LLM applications with red teaming and threat protection

Witness Protect

Enterprise AI firewall protecting AI agents, models, and chatbots from attacks

DeepKeep

Centralized governance and security platform for employee LLM interactions

Aiceberg Risk Signals Library

Library of AI threat detection signals for securing generative AI models

Behavioral Threat Detection

Monitors GenAI user behavior patterns to detect threats across workflows

Daxa Pebblo (HPE Secure AI Factory)

Shift-left AI data security gateway blocking sensitive data before LLM ingestion.

Daxa.ai Proxima

AI data gateway securing LLM interactions by monitoring and redacting sensitive data.

Daxa.ai Pebblo

Dual-layer AI security platform for RAG chatbots covering model and retrieval.

FireTail Centralized AI Logging

Aggregates & analyzes LLM logs from multiple AI providers for security & governance.