Google Gemini 2.0 Flash Thinking vs Moonshot AI Kimi K2-Thinking-0905
Detailed comparison for LLMs
On Guardion's LLM vulnerability Benchmark, Google Gemini 2.0 Flash Thinking is the more secure of the two: Gemini 2.0 Flash Thinking scores 21.5% and Kimi K2-Thinking-0905 scores 38.0% 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
Gemini 2.0 Flash Thinking is the overall winner in this comparison!
Attack Success Rate (lower is safer)
ASR for Google Gemini 2.0 Flash Thinking vs Moonshot AI Kimi K2-Thinking-0905. Green marks the safer model on each metric. Only the overall score is available for estimated models.
Overall (ASR)
TAP Attack Method (ASR)
Crescendo Attack Method (ASR)
Zero-Shot (ASR)
Key Highlights
- Google Gemini 2.0 Flash Thinking has a lower Overall (ASR).
Security Profile
Outward is better on every axis.
Frequently asked questions
Is Google Gemini 2.0 Flash Thinking or Moonshot AI Kimi K2-Thinking-0905 more secure?
On Guardion's LLM vulnerability Benchmark, Google Gemini 2.0 Flash Thinking is the more secure of the two: Gemini 2.0 Flash Thinking scores 21.5% and Kimi K2-Thinking-0905 scores 38.0% 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 Gemini 2.0 Flash Thinking vs Kimi K2-Thinking-0905?
Gemini 2.0 Flash Thinking has a 21.5% ASR and Kimi K2-Thinking-0905 has a 38.0% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.
How were Gemini 2.0 Flash Thinking and Kimi K2-Thinking-0905 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.