Alibaba Qwen2 7B Instruct vs Anthropic Claude Opus 4.5

Detailed comparison for LLMs

AlibabaAnthropic

On Guardion's LLM vulnerability Benchmark, Anthropic Claude Opus 4.5 is the more secure of the two: Qwen2 7B Instruct scores 52.0% and Claude Opus 4.5 scores 3.4% 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

Claude Opus 4.5 is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for Alibaba Qwen2 7B Instruct vs Anthropic Claude Opus 4.5. Green marks the safer model on each metric. Only the overall score is available for estimated models.

Overall (ASR)

Qwen2 7B Instruct
52.0%
Claude Opus 4.5
3.4%

TAP Attack Method (ASR)

Qwen2 7B Instruct
100.0%
Claude Opus 4.5
100.0%

Crescendo Attack Method (ASR)

Qwen2 7B Instruct
100.0%
Claude Opus 4.5
100.0%

Zero-Shot (ASR)

Qwen2 7B Instruct
100.0%
Claude Opus 4.5
100.0%

Key Highlights

  • Anthropic Claude Opus 4.5 has a lower Overall (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Qwen2 7B Instruct
Claude Opus 4.5
Full security profile
Alibaba Qwen2 7B Instruct
Full security profile
Anthropic Claude Opus 4.5

Frequently asked questions

Is Alibaba Qwen2 7B Instruct or Anthropic Claude Opus 4.5 more secure?

On Guardion's LLM vulnerability Benchmark, Anthropic Claude Opus 4.5 is the more secure of the two: Qwen2 7B Instruct scores 52.0% and Claude Opus 4.5 scores 3.4% 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 Qwen2 7B Instruct vs Claude Opus 4.5?

Qwen2 7B Instruct has a 52.0% ASR and Claude Opus 4.5 has a 3.4% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.

How were Qwen2 7B Instruct and Claude Opus 4.5 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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