PromptGuard

Freemium ✔ Verified

A real-time AI security firewall that cleans incoming prompts and stops data leaks.

AI detection AI Prompt Security & Data Protection
Best for: AI developers, Enterprise security, IT teams, AI researchers Last verified: Oct 14, 2026

What is PromptGuard?

PromptGuard is an AI security tool that helps businesses protect their AI applications from cyber threats, malicious prompts, and sensitive data leaks. It works as a security layer between an application and its large language model (LLM), checking requests before they reach the model. This helps prevent prompt injection attacks, jailbreak attempts, personal information exposure, and unauthorized data access.

The platform uses machine learning, detection patterns, and multiple security layers to identify suspicious activity. It can also detect and redact personally identifiable information (PII), API keys, and other confidential details. Users can monitor security events, review audit logs, and customize protection policies through its dashboard.

PromptGuard supports major AI providers, including OpenAI, Anthropic, Google Gemini, and Amazon Bedrock. Businesses can deploy it through its managed cloud service or within their own infrastructure. With its focus on AI security, PromptGuard is useful for developers, startups, and enterprises building AI-powered applications that require stronger data protection and threat prevention.

Best For

  • AI developers
  • Enterprise security
  • IT teams
  • AI researchers

Not Best For

  • General AI Content Creation.
  • Complete Cybersecurity Protection.
  • Advanced Security Analysis.

Quick Facts

CategoryAI detection
PricingFreemium
Starting Price$ 99 / month
Free planYes
CompanyPromptGuard
Last verifiedOct 2026

Product Details

Key Features

  • Prompt Injection Protection
  • Data Leak Prevention
  • Real-Time Prompt Filtering
  • Security Monitoring

Pros & Cons

Pros

  • It has real-time attack detection.
  • The tool has a simple integration.
  • The tool lowers risks related to data leakage.

Cons

  • It does not replace core security layers.

Pricing & Plans

From $ 99 / month Free plan Enterprise

Pricing last verified: Oct 14, 2026

Build Pro

$ 99 / month
  • Everything in Free
  • Full detector set
  • Custom policies
  • Email alerts
  • 5 API keys
Get started →

Build Scale

$ 199 / month
  • Everything in Free
  • Everything in Pro
  • Analytics dashboard
  • Priority support
  • Unlimited API keys
Get started →

Intelligence Insights Review

Editorial Research

A tool for security layer for AI applications

PromptGuard is a useful solution for developers and businesses that want to protect AI applications from prompt injection attacks, sensitive data exposure, and malicious inputs. Its real-time filtering and data redaction features help improve AI security without requiring teams to build every safeguard from scratch.

What we like: Real-Time AI Security
Main limitation: Limited to AI Security Protection

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Frequently Asked Questions

Do the tool gives free plans?
Yes, the tool gives free plans.

Sources & Verification

✔ Research verified by Intelligence Insights (Aanya Jain) · October 2026