GuardionAI ModernGuard vs Azure Prompt Shield

Detailed comparison for runtime guardrails

GuardionAIAzure

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

Head-to-Head Overview

ModernGuard is the overall winner in this comparison!

Guardrail Metrics

F1 Score

ModernGuard
43.170
Prompt Shield
42.980

Accuracy

ModernGuard
84.270
Prompt Shield
59.410

Precision

ModernGuard
88.100
Prompt Shield
93.520

Recall

ModernGuard
84.630
Prompt Shield
27.900

False Positive Rate

ModernGuard
16.250
Prompt Shield
2.350

False Negative Rate

ModernGuard
15.370
Prompt Shield
72.100

Average Latency (ms)

ModernGuard
0.140
Prompt Shield
0.173

p50 Latency (ms)

ModernGuard
128.625
Prompt Shield
169.357

p90 Latency (ms)

ModernGuard
184.638
Prompt Shield
203.948

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)
ModernGuard
Prompt Shield
Full security profile
GuardionAI ModernGuard
Full security profile
Azure Prompt Shield

Frequently asked questions

Is GuardionAI ModernGuard or Azure Prompt Shield more secure?

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

What is the F1 score of ModernGuard vs Prompt Shield?

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

How were ModernGuard and Prompt Shield 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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