Alibaba Qwen 2.5 72B vs Anthropic Claude Haiku 4.5

Detailed comparison for LLMs

AlibabaAnthropic

On Guardion's LLM vulnerability Benchmark, Anthropic Claude Haiku 4.5 is the more secure of the two: Qwen 2.5 72B scores 26.3% and Claude Haiku 4.5 scores 5.2% 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 Haiku 4.5 is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for Alibaba Qwen 2.5 72B vs Anthropic Claude Haiku 4.5. Green marks the safer model on each metric. Only the overall score is available for estimated models.

Overall (ASR)

Qwen 2.5 72B
26.3%
Claude Haiku 4.5
5.2%

TAP Attack Method (ASR)

Qwen 2.5 72B
55.2%
Claude Haiku 4.5
100.0%

Crescendo Attack Method (ASR)

Qwen 2.5 72B
23.7%
Claude Haiku 4.5
100.0%

Zero-Shot (ASR)

Qwen 2.5 72B
0.3%
Claude Haiku 4.5
100.0%

Key Highlights

  • Anthropic Claude Haiku 4.5 has a lower Overall (ASR).
  • Alibaba Qwen 2.5 72B has a lower TAP Attack Method (ASR).
  • Alibaba Qwen 2.5 72B has a lower Crescendo Attack Method (ASR).
  • Alibaba Qwen 2.5 72B has a lower Zero-Shot (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Qwen 2.5 72B
Claude Haiku 4.5
Full security profile
Alibaba Qwen 2.5 72B
Full security profile
Anthropic Claude Haiku 4.5

Frequently asked questions

Is Alibaba Qwen 2.5 72B or Anthropic Claude Haiku 4.5 more secure?

On Guardion's LLM vulnerability Benchmark, Anthropic Claude Haiku 4.5 is the more secure of the two: Qwen 2.5 72B scores 26.3% and Claude Haiku 4.5 scores 5.2% 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 Qwen 2.5 72B vs Claude Haiku 4.5?

Qwen 2.5 72B has a 26.3% ASR and Claude Haiku 4.5 has a 5.2% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.

How were Qwen 2.5 72B and Claude Haiku 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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