OpenAI GPT-4o vs OpenAI GPT-4o Mini

Detailed comparison for LLMs

OpenAIOpenAI

On Guardion's LLM vulnerability Benchmark, OpenAI GPT-4o is the more secure of the two: GPT-4o scores 22.8% and GPT-4o Mini scores 26.7% on attack success rate (ASR) (lower is better).

Head-to-Head Overview

GPT-4o is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for OpenAI GPT-4o vs OpenAI GPT-4o Mini. Green marks the safer model on each metric.

Overall (ASR)

GPT-4o
22.8%
GPT-4o Mini
26.7%

TAP Attack Method (ASR)

GPT-4o
39.6%
GPT-4o Mini
40.5%

Crescendo Attack Method (ASR)

GPT-4o
25.6%
GPT-4o Mini
33.1%

Zero-Shot (ASR)

GPT-4o
3.4%
GPT-4o Mini
6.4%

Key Highlights

  • OpenAI GPT-4o has a lower Overall (ASR).
  • OpenAI GPT-4o has a lower TAP Attack Method (ASR).
  • OpenAI GPT-4o has a lower Crescendo Attack Method (ASR).
  • OpenAI GPT-4o has a lower Zero-Shot (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
GPT-4o
GPT-4o Mini
Full security profile
OpenAI GPT-4o
Full security profile
OpenAI GPT-4o Mini

Frequently asked questions

Is OpenAI GPT-4o or OpenAI GPT-4o Mini more secure?

On Guardion's LLM vulnerability Benchmark, OpenAI GPT-4o is the more secure of the two: GPT-4o scores 22.8% and GPT-4o Mini scores 26.7% on attack success rate (ASR) (lower is better).

What is the attack success rate (ASR) of GPT-4o vs GPT-4o Mini?

GPT-4o has a 22.8% ASR and GPT-4o Mini has a 26.7% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.

How were GPT-4o and GPT-4o Mini 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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