AWS Bedrock Guardrails vs Meta LlamaGuard

Detailed comparison for runtime guardrails

AWSMeta

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

Head-to-Head Overview

Bedrock Guardrails is the overall winner in this comparison!

Guardrail Metrics

F1 Score

Bedrock Guardrails
5.420
LlamaGuard
0.000

Accuracy

Bedrock Guardrails
44.440
LlamaGuard
0.000

Precision

Bedrock Guardrails
96.340
LlamaGuard
0.000

Recall

Bedrock Guardrails
5.740
LlamaGuard
0.000

False Positive Rate

Bedrock Guardrails
0.310
LlamaGuard
0.000

False Negative Rate

Bedrock Guardrails
94.260
LlamaGuard
0.000

Average Latency (ms)

Bedrock Guardrails
0.590
LlamaGuard
0.000

p50 Latency (ms)

Bedrock Guardrails
445.265
LlamaGuard
0.000

p90 Latency (ms)

Bedrock Guardrails
891.597
LlamaGuard
0.000

Key Highlights

  • AWS Bedrock Guardrails has a better F1 Score.
  • AWS Bedrock Guardrails has a better Accuracy.
  • AWS Bedrock Guardrails has a better Precision.
  • AWS Bedrock Guardrails 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)
Bedrock Guardrails
LlamaGuard
Full security profile
AWS Bedrock Guardrails
Full security profile
Meta LlamaGuard

Frequently asked questions

Is AWS Bedrock Guardrails or Meta LlamaGuard more secure?

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

What is the F1 score of Bedrock Guardrails vs LlamaGuard?

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

How were Bedrock Guardrails 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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