Google Gemini 2.0 Flash Lite vs Meta Llama 3.1 405B Instruct

Detailed comparison for LLMs

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On Guardion's LLM vulnerability Benchmark, Google Gemini 2.0 Flash Lite is the more secure of the two: Gemini 2.0 Flash Lite scores 31.3% 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

Gemini 2.0 Flash Lite is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for Google Gemini 2.0 Flash Lite 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)

Gemini 2.0 Flash Lite
31.3%
Llama 3.1 405B Instruct
36.0%

TAP Attack Method (ASR)

Gemini 2.0 Flash Lite
63.9%
Llama 3.1 405B Instruct
100.0%

Crescendo Attack Method (ASR)

Gemini 2.0 Flash Lite
28.7%
Llama 3.1 405B Instruct
100.0%

Zero-Shot (ASR)

Gemini 2.0 Flash Lite
1.3%
Llama 3.1 405B Instruct
100.0%

Key Highlights

  • Google Gemini 2.0 Flash Lite has a lower Overall (ASR).
  • Google Gemini 2.0 Flash Lite has a lower TAP Attack Method (ASR).
  • Google Gemini 2.0 Flash Lite has a lower Crescendo Attack Method (ASR).
  • Google Gemini 2.0 Flash Lite has a lower Zero-Shot (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Gemini 2.0 Flash Lite
Llama 3.1 405B Instruct
Full security profile
Google Gemini 2.0 Flash Lite
Full security profile
Meta Llama 3.1 405B Instruct

Frequently asked questions

Is Google Gemini 2.0 Flash Lite or Meta Llama 3.1 405B Instruct more secure?

On Guardion's LLM vulnerability Benchmark, Google Gemini 2.0 Flash Lite is the more secure of the two: Gemini 2.0 Flash Lite scores 31.3% 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 Gemini 2.0 Flash Lite vs Llama 3.1 405B Instruct?

Gemini 2.0 Flash Lite has a 31.3% 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 Gemini 2.0 Flash Lite 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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