Google Cloud Model Armor vs Meta LlamaGuard

Detailed comparison for runtime guardrails

Google CloudMeta

On Guardion's Prompt Attack Risk Benchmark, Meta LlamaGuard is the more secure of the two: Model Armor scores NaN% and LlamaGuard 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

Model Armor
4.680
LlamaGuard
0.000

Accuracy

Model Armor
45.540
LlamaGuard
0.000

Precision

Model Armor
76.410
LlamaGuard
0.000

Recall

Model Armor
10.670
LlamaGuard
0.000

False Positive Rate

Model Armor
4.700
LlamaGuard
0.000

False Negative Rate

Model Armor
89.330
LlamaGuard
0.000

Average Latency (ms)

Model Armor
0.703
LlamaGuard
0.000

p50 Latency (ms)

Model Armor
381.288
LlamaGuard
0.000

p90 Latency (ms)

Model Armor
1549.410
LlamaGuard
0.000

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 LlamaGuard has a better False Positive Rate.
  • Meta LlamaGuard has a better False Negative Rate.
  • Meta LlamaGuard has a better Average Latency (ms).
  • Meta LlamaGuard has a better p50 Latency (ms).
  • Meta LlamaGuard has a better p90 Latency (ms).

Security Profile

Outward is better on every axis.

F1 ScoreAccuracyPrecisionRecallFPRFNRAverage Latency (ms)p50 Latency (ms)p90 Latency (ms)
Model Armor
LlamaGuard
Full security profile
Google Cloud Model Armor
Full security profile
Meta LlamaGuard

Frequently asked questions

Is Google Cloud Model Armor or Meta LlamaGuard more secure?

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

What is the F1 score of Model Armor vs LlamaGuard?

Model Armor scores NaN% F1 and LlamaGuard scores NaN% F1 on Guardion's prompt-attack benchmark. F1 balances precision and recall — higher is better.

How were Model Armor and LlamaGuard 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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