Lakera Guard vs Azure Prompt Shield
Detailed comparison for runtime guardrails
On Guardion's Prompt Attack Risk Benchmark, Azure Prompt Shield is the more secure of the two: Guard scores NaN% and Prompt Shield 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.
- Lakera Guard has a better False Positive Rate.
- Lakera Guard has a better False Negative Rate.
- Lakera Guard has a better Average Latency (ms).
- Lakera Guard has a better p50 Latency (ms).
- Lakera Guard has a better p90 Latency (ms).
Security Profile
Outward is better on every axis.
Frequently asked questions
Is Lakera Guard or Azure Prompt Shield more secure?
On Guardion's Prompt Attack Risk Benchmark, Azure Prompt Shield is the more secure of the two: Guard scores NaN% and Prompt Shield scores NaN% on F1 score (higher is better).
What is the F1 score of Guard vs Prompt Shield?
Guard 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 Guard 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.