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