Azure PromptShield vs Google Cloud Model Armor
Detailed comparison for runtime guardrails
On Guardion's Prompt Attack Risk Benchmark, Google Cloud Model Armor is the more secure of the two: PromptShield scores NaN% and Model Armor scores NaN% on F1 score (higher is better).
Head-to-Head Overview
Model Armor is the overall winner in this comparison!
Guardrail Metrics
F1 Score
Accuracy
Precision
Recall
False Positive Rate
False Negative Rate
Average Latency (ms)
p50 Latency (ms)
p90 Latency (ms)
Key Highlights
- Google Cloud Model Armor has a better F1 Score.
- Google Cloud Model Armor has a better Accuracy.
- Google Cloud Model Armor has a better Precision.
- Google Cloud Model Armor has a better Recall.
- Azure PromptShield has a better False Positive Rate.
- Azure PromptShield has a better False Negative Rate.
- Azure PromptShield has a better Average Latency (ms).
- Azure PromptShield has a better p50 Latency (ms).
- Azure PromptShield has a better p90 Latency (ms).
Security Profile
Outward is better on every axis.
Frequently asked questions
Is Azure PromptShield or Google Cloud Model Armor more secure?
On Guardion's Prompt Attack Risk Benchmark, Google Cloud Model Armor is the more secure of the two: PromptShield scores NaN% and Model Armor scores NaN% on F1 score (higher is better).
What is the F1 score of PromptShield vs Model Armor?
PromptShield scores NaN% F1 and Model Armor scores NaN% F1 on Guardion's prompt-attack benchmark. F1 balances precision and recall — higher is better.
How were PromptShield and Model Armor 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.