Best LLM Security Tools in 2026

PromptGuard

PromptGuard suits teams adding request inspection and data-protection controls to applications that use LLM providers.

GuardionAI

GuardionAI suits organizations adding runtime controls to AI agents or coding agents, especially those seeking inline policy enforcement and audit logs.

NVIDIA NeMo Guardrails

NeMo Guardrails suits developers and teams building LLM applications that need configurable policy enforcement and safety checks.

Openlayer Guardrails suits engineering, AI, security, compliance, and finance teams, including teams in healthcare and financial services.

GLACIS suits AI-agent builders and operators, AI sellers serving regulated buyers, and healthcare AI overseers seeking controls and verifiable decision records.

Check Point AI Guardrails

It suits enterprises governing foundation models, custom deployments, live AI applications, and agents.

It suits developers building LLM applications, including guarded RAG and agent workflows, who can manage a self-hosted tool.

Guardrails AI

Guardrails suits teams building chatbots, RAG pipelines, or agent workflows that need risk checks or structured LLM output.

Lasso AI Security Platform

Lasso is designed for enterprises, including global enterprises and the U.S.

It is presented for enterprise AI teams, including platform and security engineers.

Amazon Bedrock Guardrails

It suits users seeking cloud-based checks for model inputs and outputs, including content filtering, sensitive-information handling, and prompt-injection defense.

WitnessAI is presented for enterprises managing AI use across employees, developers, applications, compliance teams, and AI FinOps.

It suits agent startups, platform and AI engineers, and security or compliance teams building agents, robotics, or automation that can take real-world actions.

Inferwall suits teams building LLM applications that want a self-hosted layer for scanning inputs and outputs.