​

The Advanced Prompt Attack Detection

This is the model page for the Prompt Defense detector. See the detector overview in Prompt Defense.

​

Model Card

​

Modern Transformer-Encoder Architecture

• Built on ModernBERT, a high-efficiency encoder
• Features Rotary Positional Embeddings, Flash Attention, and memory optimizations
• Supports 8K token context with low latency

​

⚡ Ultra-Fast Inference

• Optimized for real-time streaming and in-line LLM applications
• Achieves sub ~50ms latency in production environments

​

Multilingual and Domain-Aware

• Trained on data in 8+ languages
• Covers banking, fintech, ecommerce, healthcare, and other verticals

​

🔐 Threat Intelligence Training + Continuous Updates

• Pretrained on 1 trillion tokens
• Fine-tuned on millions of simulated and real-world prompt attacks
  • Proprietary red teaming data generated by AI attackers + red team partners
  • AI threat databases & state-of-the-art prompt attack vectors
  • Diverse synthetic data generation for safe examples
  • Continuous updates with emerging threat patterns

​

Available Versions

• modern-guard-v1.5 — latest, recommended for production
• modern-guard-v1 — stable, production-proven
• modern-guard-v0 — initial release

​

Benchmark Results

• Evaluation against 40+ attack classes
• Cross-validation across multiple domains and languages

​

Overall F1-Scores

​

Threat Category Coverage

​

How to Use ModernGuard

​

💡 Example integration

// 1) Create or update a Prompt Defense policy powered by ModernGuard
await fetch("https://api.guardion.ai/v1/policies", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_API_KEY"
  },
  body: JSON.stringify({
    id: "prompt-defense",
    definition: "Prevent prompt injections and jailbreaks",
    target: "user",
    detector: {
      model: "modern-guard",
      expected: "block",
      threshold: 0.9
    }
  })
});

// 2) Evaluate using that policy
const response = await fetch("https://api.guardion.ai/v1/guard", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_API_KEY"
  },
  body: JSON.stringify({
    messages: [{ role: "user", content: "Your user input here" }],
    override_enabled_policies: ["prompt-defense"]
  })
});

const result = await response.json();

if (result.flagged) {
  console.log("Threat detected:", result.reason);
} else {
  console.log("Prompt is safe to use");
}

​

Related

• Injection — how to use ModernGuard models as a detector in policies