A new benchmark called the "Car Wash Test" reveals that many leading AI models struggle with basic reasoning. When asked whether to walk or drive 50 meters to a car wash, 42 out of 53 tested models incorrectly suggested walking. Even top-tier models like Claude Sonnet 4.5 and GPT-5.2 failed the test on a single run. Consistency tests showed further degradation, with only five models reliably answering correctly across ten attempts, highlighting a significant gap in practical reasoning capabilities. AI
IMPACT Highlights a critical reasoning flaw in current LLMs, suggesting a need for improved logical inference capabilities beyond pattern matching.
RANK_REASON This is a research paper presenting a new benchmark and evaluation of existing AI models. [lever_c_demoted from research: ic=1 ai=1.0]
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- Claude Opus 4.6
- Claude Sonnet 4.5
- DeepSeek v3.1
- Felix Wunderlich
- Gemini 2.0 Flash Lite
- Gemini 3 Flash
- Gemini 3 Pro
- GLM-5
- GPT-4o
- GPT-5
- GPT-5.2
- Grok-4
- Kimi K2.5
- Llama
- Opper
- Sonar
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