Amazon Nova Pro vs Google Gemma 3n E4B Instructed

Detailed comparison for LLMs

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On Guardion's LLM vulnerability Benchmark, Amazon Nova Pro is the more secure of the two: Nova Pro scores 24.0% and Gemma 3n E4B Instructed scores 49.0% on attack success rate (ASR) (lower is better). One or both scores are estimated from public safety evaluations pending a Guardion benchmark run.

Head-to-Head Overview

Nova Pro is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for Amazon Nova Pro vs Google Gemma 3n E4B Instructed. Green marks the safer model on each metric. Only the overall score is available for estimated models.

Overall (ASR)

Nova Pro
24.0%
Gemma 3n E4B Instructed
49.0%

TAP Attack Method (ASR)

Nova Pro
100.0%
Gemma 3n E4B Instructed
100.0%

Crescendo Attack Method (ASR)

Nova Pro
100.0%
Gemma 3n E4B Instructed
100.0%

Zero-Shot (ASR)

Nova Pro
100.0%
Gemma 3n E4B Instructed
100.0%

Key Highlights

  • Amazon Nova Pro has a lower Overall (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Nova Pro
Gemma 3n E4B Instructed
Full security profile
Amazon Nova Pro
Full security profile
Google Gemma 3n E4B Instructed

Frequently asked questions

Is Amazon Nova Pro or Google Gemma 3n E4B Instructed more secure?

On Guardion's LLM vulnerability Benchmark, Amazon Nova Pro is the more secure of the two: Nova Pro scores 24.0% and Gemma 3n E4B Instructed scores 49.0% on attack success rate (ASR) (lower is better). One or both scores are estimated from public safety evaluations pending a Guardion benchmark run.

What is the attack success rate (ASR) of Nova Pro vs Gemma 3n E4B Instructed?

Nova Pro has a 24.0% ASR and Gemma 3n E4B Instructed has a 49.0% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.

How were Nova Pro and Gemma 3n E4B Instructed tested?

Both were red-teamed with the HarmBench framework across zero-shot, TAP (Tree of Attacks with Pruning), and Crescendo multi-turn attacks, scored by Attack Success Rate.

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