Azure Prompt Shield vs GuardionAI ModernGuard

Detailed comparison for runtime guardrails

AzureGuardionAI

On Guardion's Prompt Attack Risk Benchmark, GuardionAI ModernGuard is the more secure of the two: Prompt Shield scores NaN% and ModernGuard scores NaN% on F1 score (higher is better).

Head-to-Head Overview

ModernGuard is the overall winner in this comparison!

Guardrail Metrics

F1 Score

Prompt Shield
42.980
ModernGuard
43.170

Accuracy

Prompt Shield
59.410
ModernGuard
84.270

Precision

Prompt Shield
93.520
ModernGuard
88.100

Recall

Prompt Shield
27.900
ModernGuard
84.630

False Positive Rate

Prompt Shield
2.350
ModernGuard
16.250

False Negative Rate

Prompt Shield
72.100
ModernGuard
15.370

Average Latency (ms)

Prompt Shield
0.173
ModernGuard
0.140

p50 Latency (ms)

Prompt Shield
169.357
ModernGuard
128.625

p90 Latency (ms)

Prompt Shield
203.948
ModernGuard
184.638

Key Highlights

  • GuardionAI ModernGuard has a better F1 Score.
  • GuardionAI ModernGuard has a better Accuracy.
  • Azure Prompt Shield has a better Precision.
  • GuardionAI ModernGuard has a better Recall.
  • Azure Prompt Shield has a better False Positive Rate.
  • GuardionAI ModernGuard has a better False Negative Rate.
  • GuardionAI ModernGuard has a better Average Latency (ms).
  • GuardionAI ModernGuard has a better p50 Latency (ms).
  • GuardionAI ModernGuard has a better p90 Latency (ms).

Security Profile

Outward is better on every axis.

F1 ScoreAccuracyPrecisionRecallFPRFNRAverage Latency (ms)p50 Latency (ms)p90 Latency (ms)
Prompt Shield
ModernGuard
Full security profile
Azure Prompt Shield
Full security profile
GuardionAI ModernGuard

Frequently asked questions

Is Azure Prompt Shield or GuardionAI ModernGuard more secure?

On Guardion's Prompt Attack Risk Benchmark, GuardionAI ModernGuard is the more secure of the two: Prompt Shield scores NaN% and ModernGuard scores NaN% on F1 score (higher is better).

What is the F1 score of Prompt Shield vs ModernGuard?

Prompt Shield scores NaN% F1 and ModernGuard scores NaN% F1 on Guardion's prompt-attack benchmark. F1 balances precision and recall — higher is better.

How were Prompt Shield and ModernGuard tested?

Both were evaluated via API at production-like sensitivity against 30+ prompt-attack categories using zero-shot, Crescendo, and TAP methods, scored by F1.

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