Google Cloud Model Armor vs Meta Prompt Guard 2 86M
Detailed comparison for runtime guardrails
On Guardion's Prompt Attack Risk Benchmark, Meta Prompt Guard 2 86M is the more secure of the two: Model Armor scores NaN% and Prompt Guard 2 86M 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.
- Meta Prompt Guard 2 86M has a better False Positive Rate.
- Meta Prompt Guard 2 86M has a better False Negative Rate.
- Meta Prompt Guard 2 86M has a better Average Latency (ms).
- Meta Prompt Guard 2 86M has a better p50 Latency (ms).
- Meta Prompt Guard 2 86M has a better p90 Latency (ms).
Security Profile
Outward is better on every axis.
Frequently asked questions
Is Google Cloud Model Armor or Meta Prompt Guard 2 86M more secure?
On Guardion's Prompt Attack Risk Benchmark, Meta Prompt Guard 2 86M is the more secure of the two: Model Armor scores NaN% and Prompt Guard 2 86M scores NaN% on F1 score (higher is better).
What is the F1 score of Model Armor vs Prompt Guard 2 86M?
Model Armor scores NaN% F1 and Prompt Guard 2 86M scores NaN% F1 on Guardion's prompt-attack benchmark. F1 balances precision and recall — higher is better.
How were Model Armor and Prompt Guard 2 86M 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.