Anthropic Claude 3.7 Sonnet vs Google Gemini 2.0 Flash Thinking

Detailed comparison for LLMs

AnthropicGoogle

On Guardion's LLM vulnerability Benchmark, Anthropic Claude 3.7 Sonnet is the more secure of the two: Claude 3.7 Sonnet scores 20.3% and Gemini 2.0 Flash Thinking scores 21.5% 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 3.7 Sonnet is the overall winner in this comparison!

Attack Success Rate (lower is safer)

ASR for Anthropic Claude 3.7 Sonnet vs Google Gemini 2.0 Flash Thinking. Green marks the safer model on each metric. Only the overall score is available for estimated models.

Overall (ASR)

Claude 3.7 Sonnet
20.3%
Gemini 2.0 Flash Thinking
21.5%

TAP Attack Method (ASR)

Claude 3.7 Sonnet
31.4%
Gemini 2.0 Flash Thinking
100.0%

Crescendo Attack Method (ASR)

Claude 3.7 Sonnet
25.3%
Gemini 2.0 Flash Thinking
100.0%

Zero-Shot (ASR)

Claude 3.7 Sonnet
Gemini 2.0 Flash Thinking
100.0%

Key Highlights

  • Anthropic Claude 3.7 Sonnet has a lower Overall (ASR).
  • Anthropic Claude 3.7 Sonnet has a lower TAP Attack Method (ASR).
  • Anthropic Claude 3.7 Sonnet has a lower Crescendo Attack Method (ASR).

Security Profile

Outward is better on every axis.

OverallTAPCrescendoZero-Shot
Claude 3.7 Sonnet
Gemini 2.0 Flash Thinking
Full security profile
Anthropic Claude 3.7 Sonnet
Full security profile
Google Gemini 2.0 Flash Thinking

Frequently asked questions

Is Anthropic Claude 3.7 Sonnet or Google Gemini 2.0 Flash Thinking more secure?

On Guardion's LLM vulnerability Benchmark, Anthropic Claude 3.7 Sonnet is the more secure of the two: Claude 3.7 Sonnet scores 20.3% and Gemini 2.0 Flash Thinking scores 21.5% 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 Claude 3.7 Sonnet vs Gemini 2.0 Flash Thinking?

Claude 3.7 Sonnet has a 20.3% ASR and Gemini 2.0 Flash Thinking has a 21.5% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.

How were Claude 3.7 Sonnet and Gemini 2.0 Flash Thinking 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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