Meta Llama 3.1 405B Instruct vs Mistral Mistral Large 2

Detailed comparison for LLMs

MetaMistral

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 Mistral Large 2 scores 42.0% 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 3.1 405B Instruct vs Mistral Mistral Large 2. 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%
Mistral Large 2
42.0%

TAP Attack Method (ASR)

Llama 3.1 405B Instruct
100.0%
Mistral Large 2
100.0%

Crescendo Attack Method (ASR)

Llama 3.1 405B Instruct
100.0%
Mistral Large 2
100.0%

Zero-Shot (ASR)

Llama 3.1 405B Instruct
100.0%
Mistral Large 2
100.0%

Key Highlights

  • Meta Llama 3.1 405B Instruct has a lower Overall (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Llama 3.1 405B Instruct
Mistral Large 2
Full security profile
Meta Llama 3.1 405B Instruct
Full security profile
Mistral Mistral Large 2

Frequently asked questions

Is Meta Llama 3.1 405B Instruct or Mistral Mistral Large 2 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 Mistral Large 2 scores 42.0% 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 3.1 405B Instruct vs Mistral Large 2?

Llama 3.1 405B Instruct has a 36.0% ASR and Mistral Large 2 has a 42.0% 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 Mistral Large 2 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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