OpenAI GPT-4.1 vs Meta Llama 3H 405B
Detailed comparison for LLMs
On Guardion's LLM vulnerability Benchmark, OpenAI GPT-4.1 is the more secure of the two: GPT-4.1 scores 34.9% and Llama 3H 405B scores 36.6% on attack success rate (ASR) (lower is better).
Head-to-Head Overview
GPT-4.1 is the overall winner in this comparison!
Attack Success Rate (lower is safer)
ASR for OpenAI GPT-4.1 vs Meta Llama 3H 405B. Green marks the safer model on each metric.
Overall (ASR)
TAP Attack Method (ASR)
Crescendo Attack Method (ASR)
Zero-Shot (ASR)
Key Highlights
- OpenAI GPT-4.1 has a lower Overall (ASR).
- OpenAI GPT-4.1 has a lower Zero-Shot (ASR).
Security Profile
Outward is better on every axis.
Frequently asked questions
Is OpenAI GPT-4.1 or Meta Llama 3H 405B more secure?
On Guardion's LLM vulnerability Benchmark, OpenAI GPT-4.1 is the more secure of the two: GPT-4.1 scores 34.9% and Llama 3H 405B scores 36.6% on attack success rate (ASR) (lower is better).
What is the attack success rate (ASR) of GPT-4.1 vs Llama 3H 405B?
GPT-4.1 has a 34.9% 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 GPT-4.1 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.