17.9
PromptGuard is a security layer between an application and its LLM provider that inspects requests before they reach the model.
Free planWebAPIExtension
Best LLM Security Tools in 2026
Protecting an LLM application means considering both how safeguards are deployed and which risks they address. Compare deployment model, model-abuse detection, output guardrails and prompt injection defense, then look at PII redaction and secrets detection for additional listed controls. Free-plan availability and paid-from pricing can help you weigh access and cost. PromptGuard, Amazon Bedrock Guardrails and…
27.6
Prompt Inspector is an API-based tool for detecting prompt injection and applying sensitive-word filters and AI safety guardrails.
Free planOpen sourceWebAPILinux
37.5
CyberSecEval 4 is a free benchmark suite for assessing cybersecurity vulnerabilities and defensive capabilities in large language models.
Free planOpen sourceWebAPILinux
- 4
NVIDIA NeMo Guardrails
NVIDIA NeMo Guardrails is a free, open-source Python package for adding configurable controls to applications built with large language models.
Free planOpen sourceAPILinuxmacOSSelf-hosted7.4Free plan - 5
Openlayer Guardrails
Openlayer Guardrails inspects live AI inputs and outputs and can block, redact, escalate, or send policy violations for review.
Free planWebAPISelf-hosted6.9Free plan - 6
GuardionAI
WebAPILinuxmacOS6.8 - 7
Google Cloud Secret Manager
Free planWeb6.5From $0.02 a month - 8
Sanctum Runtime
Sanctum Runtime is middleware that checks actions from AI agents, robotics, automation, and other systems before they affect the real world.
AndroidiOSWebAPI6.3 - 9
Amazon Bedrock Guardrails
Amazon Bedrock Guardrails is a cloud, web-based service for controlling model inputs and outputs.
Free planWeb6.2From $0.07 a month - 10
Cisco Catalyst Center
Cisco Catalyst Center is a centralized controller and management dashboard for enterprise network operations.
WebAPILinuxmacOS6.2 - 11
VotalAI
VotalAI is a runtime security platform for enterprise AI applications and agents.
WebAPISelf-hosted6.1 - 12
6.0From $10 a month - 13
Lasso AI Security Platform
Lasso AI Security Platform brings AI discovery, risk management, testing and runtime protection together for enterprise environments.
WebAPIExtension6.0 - 14
GLACIS
GLACIS places runtime controls between AI actions and the systems they affect.
Free planWebAPISelf-hosted5.9Free plan - 15
LLM Guard
Free planAPILinuxSelf-hosted5.9Free plan - 16
SecureAI Guard
SecureAI Guard is an enterprise security layer positioned between an application and the AI models it calls.
WebAPISelf-hosted5.9From $2,999 a month - 17
Guardrails AI
Guardrails AI is an open-source Python framework for detecting, measuring, and reducing AI risks, as well as generating structured data from large language models.
WebAPISelf-hosted5.8 - 18
Rocotal
Rocotal is a web-based AI security and governance platform for organizations that want rules around their teams' AI use.
Web5.8 - 19
WitnessAI
WitnessAI is an enterprise AI security and governance platform for employee, model, application, and agent AI use.
WebAPIWindows5.8 - 20
Prompt Security AI Red Teaming
Prompt Security AI Red Teaming is a paid AI security offering for organizations testing homegrown AI applications before release.
WebSelf-hosted5.7 - 21
Vigil Guard
Vigil Guard is an AI Detection & Response platform for monitoring prompts, model responses, and agent actions as they occur.
APIExtensionLinuxSelf-hosted5.6 - 22
Inferwall
Inferwall is a self-hosted AI firewall for checking inputs and outputs in LLM applications.
APILinuxmacOSWindows5.5 - 23
Noma Security
Noma Security is an enterprise platform for discovering, governing, testing, and protecting AI applications and agents.
WebAPISelf-hosted5.5 - 24
Check Point AI Guardrails
Check Point AI Guardrails analyzes large language model inputs and outputs for threats such as prompt injection, data leakage, policy bypass attempts and unsafe content.
WebAPISelf-hosted5.4 - 25
HiddenLayer AI Guardrails
HiddenLayer AI Guardrails applies safety, compliance, and policy controls to LLMs, agents, and AI applications.
WebSelf-hosted5.3