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Best LLM Security Tools in 2026
LLM security tools offer different ways to address risks in applications built around language models. Compare deployment models with the listed protections: model-abuse detection, output guardrails, and prompt injection defense, as well as PII redaction and secrets detection. Free-plan availability and paid-from pricing can help you assess access and cost alongside those capabilities. PromptGuard, Amazon Bedrock Guardrails, and Openlayer Guardrails are among the entries, with GLACIS and Lasso AI Security Platform also represented. Weigh the protections and deployment options against the risks and operating setup your application needs to address.
- 31 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
CyberSecEval
Free plan Open source APILinuxMac+2CyberSecEval covers several cybersecurity risks as well as defensive capabilities, with distinct benchmarks for code, prompt injection, patch generation, and SOC reasoning.
- 2
NVIDIA NeMo Guardrails
Free plan Open source APILinuxMac+2NeMo Guardrails offers a broad set of configurable checks and several ways to integrate them into an LLM application.
- 3
Prompt Inspector
Free plan Open source APILinuxMac+3Choose Prompt Inspector if its API checks, SDKs, or MCP connection fit your application and the Free allowance works for your volume.
- 4
GLACIS
Free plan APISelf-hostedWebGLACIS offers controls for AI actions and signed records that can be checked independently. Its records have stated verification limits, and evidence packs are not automated.
- 5
LLM Guard
Free plan APILinuxSelf-hostedLLM Guard brings a broad set of prompt and output scanners to a self-hosted toolkit with framework examples and API deployment.
- 6
PromptGuard
Free plan APIExtensionLinux+4PromptGuard combines LLM request screening with deployment choices from managed cloud to air-gapped operation.
- 7
Inferwall
Free plan APILinuxMac+1Inferwall offers several deployment options, configurable detection layers, and controls for tailoring signatures and thresholds.
- 8
Openlayer Guardrails
Free plan APISelf-hostedWebOpenlayer Guardrails combines live policy enforcement with decision records and several deployment choices. Basic has substantial project, log, and retention limits; Enterprise pricing is custom.
- 9
Guardrails AI
Free plan APISelf-hostedWebGuardrails AI combines validators, risk protections, and structured-data generation in an open-source Python framework.
- 10
Sanctum Runtime
Free plan AndroidAPIiPhone+3Sanctum Runtime is aimed at teams that need policy checks and operator oversight between AI reasoning and execution.
- 11
VotalAI
Free plan APISelf-hostedWebChoose VotalAI if your enterprise AI team needs runtime prompt and output checks alongside per-agent tool controls and identity.
- 12
GuardionAI
Free trial APILinuxMac+3GuardionAI focuses on inline controls for AI calls, sensitive data, and coding-agent tools. Its available plans differ in retention, request limits, support, and pricing terms.
6.4 Visit site - 13
Google Cloud Secret Manager
Free plan Web - 14
Cisco Catalyst Center
Paid APILinuxMac+3 - 15
Check Point AI Guardrails
Paid APISelf-hostedWebAI Guardrails combines threat detection, monitoring, and controls for LLM applications and agent interactions. Buyers should review its processing and retention terms and request pricing.
- 16
Vigil Guard
Free trial APIExtensionLinux+1Vigil Guard focuses on real-time controls for prompts, outputs, and agent behavior, with deployment options from browser extension to air-gapped Enterprise.
- 17
Cloudflare Advanced Certificate Manager
Paid APIWebAdvanced Certificate Manager combines automated certificate handling with customization and API controls.
- 18
HiddenLayer AI Guardrails
Paid Self-hostedWebChoose HiddenLayer AI Guardrails if your organization needs safeguards spanning AI content, MCP traffic, and the wider AI lifecycle, with deployment across varied architectures.
- 19
Noma Security
Paid APISelf-hostedWebChoose Noma Security if your organization needs enterprise AI discovery, access governance, testing, and runtime protection across its AI environments.
- 20
Lasso AI Security Platform
Paid APIExtensionWebLasso connects AI discovery, risk assessment, testing, and runtime controls in one platform. Enterprises should review its deployment options and request pricing to assess fit.
- 21
SecureAI Guard
Paid APISelf-hostedWebSecureAI Guard focuses on server-side inspection, data protection, agent controls, retrieval permissions, and compliance evidence for enterprise AI systems.
- 22
Straiker Defend AI
Paid APISelf-hostedWebDefend AI is designed to monitor agent activity and block several stated threat types, with multiple deployment and integration options.
- 23
WitnessAI
Paid APIWebWindowsWitnessAI brings discovery, controls, data protection, and agent governance into an enterprise AI security platform.
- 24
ZeroTrusted AI Firewall
Paid Self-hostedWebZeroTrusted AI Firewall combines content safeguards, agent-tool governance, and threat detection with multiple deployment modes.
- 25
Prompt Security AI Red Teaming
Paid Self-hostedWebChoose Prompt Security AI Red Teaming if your organization needs pre-release AI attack testing plus runtime guardrails.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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