Meta Llama 3.1 405B Instruct vs Meta Llama 3H 405B

Detailed comparison for LLMs

MetaMeta

On Guardion's LLM vulnerability Benchmark, Meta Llama 3.1 405B Instruct is the more secure of the two: Llama 3.1 405B Instruct scores 36.0% and Llama 3H 405B scores 36.6% 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

Llama 3.1 405B Instruct is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for Meta Llama 3.1 405B Instruct vs Meta Llama 3H 405B. Green marks the safer model on each metric. Only the overall score is available for estimated models.

Overall (ASR)

Llama 3.1 405B Instruct
36.0%
Llama 3H 405B
36.6%

TAP Attack Method (ASR)

Llama 3.1 405B Instruct
100.0%
Llama 3H 405B

Crescendo Attack Method (ASR)

Llama 3.1 405B Instruct
100.0%
Llama 3H 405B

Zero-Shot (ASR)

Llama 3.1 405B Instruct
100.0%
Llama 3H 405B
12.9%

Key Highlights

  • Meta Llama 3.1 405B Instruct has a lower Overall (ASR).
  • Meta Llama 3H 405B has a lower Zero-Shot (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Llama 3.1 405B Instruct
Llama 3H 405B
Full security profile
Meta Llama 3.1 405B Instruct
Full security profile
Meta Llama 3H 405B

Frequently asked questions

Is Meta Llama 3.1 405B Instruct or Meta Llama 3H 405B more secure?

On Guardion's LLM vulnerability Benchmark, Meta Llama 3.1 405B Instruct is the more secure of the two: Llama 3.1 405B Instruct scores 36.0% and Llama 3H 405B scores 36.6% 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 Llama 3.1 405B Instruct vs Llama 3H 405B?

Llama 3.1 405B Instruct has a 36.0% ASR and Llama 3H 405B has a 36.6% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.

How were Llama 3.1 405B Instruct and Llama 3H 405B 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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