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

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

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

Attack Success Rate (lower is safer)

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

Overall (ASR)

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

TAP Attack Method (ASR)

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

Crescendo Attack Method (ASR)

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

Zero-Shot (ASR)

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

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 3H 405B
Llama 3.1 405B Instruct
Full security profile
Meta Llama 3H 405B
Full security profile
Meta Llama 3.1 405B Instruct

Frequently asked questions

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

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

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

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