PromptGuard – AI Prompt Security Firewall
Category: AI Security / AI Detection
Website: https://promptguard.ai
Pricing Model: Freemium
Description
PromptGuard is an AI-powered, production-ready prompt security firewall for large language models (LLMs). It inspects, sanitizes, and governs prompts and surrounding context in real time before they reach the underlying model.
Using a combination of heuristics, machine learning classifiers, and LLM-based detectors, PromptGuard helps teams block prompt injection attacks, redact personally identifiable information (PII), and prevent sensitive data leaks across AI applications.
Designed as a drop-in layer, PromptGuard integrates with major LLM providers—including OpenAI, Anthropic, Google Gemini, Groq, and Azure OpenAI—while adding minimal latency (typically under 40 milliseconds). It is targeted at product, security, and enterprise teams that need enforceable prompt governance, auditability, and compliance in production environments.
Key Features
- Prompt Injection Protection – Detects and blocks direct and indirect prompt injection attacks
- PII Redaction – Automatically identifies and removes sensitive user data
- Context-Aware Inspection – Analyzes prompts, system messages, and surrounding context
- Multi-Layer Detection – Combines heuristics, ML models, and LLM-based classifiers
- Tunable Security Policies – Customize enforcement rules per application or use case
- Low Latency – Adds <40ms overhead for real-time applications
- Logs & Analytics – Visibility into blocked requests, trends, and security events
- Broad LLM Support – Works with OpenAI, Anthropic, Gemini, Groq, and Azure
Use Cases
- Securing customer-facing AI chatbots
- Preventing data leakage in enterprise LLM workflows
- Enforcing AI compliance and governance policies
- Protecting internal tools using LLM APIs
- Monitoring and auditing AI prompt activity
Pricing
Freemium
- Free tier for testing and early-stage usage
- Paid plans for higher volume, advanced policies, analytics, and enterprise features
(Exact pricing tiers are available on the official website.)
Tags
AI Detection · AI Security · Prompt Injection · LLM Governance · Enterprise AI
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FAQs
What problem does PromptGuard solve?
PromptGuard protects LLM-powered applications from prompt injection attacks, data leakage, and unauthorized access to sensitive information.
Does PromptGuard slow down AI responses?
No. It is designed for real-time use and typically adds less than 40ms of latency.
Which AI models does PromptGuard support?
It supports major providers including OpenAI, Anthropic, Google Gemini, Groq, and Azure OpenAI.
Is PromptGuard suitable for enterprise use?
Yes. It is built specifically for production, compliance, logging, and enterprise-grade AI governance.