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80% of LLM 'Thinking' Is a Lie — What CoT Faithfulness Research Actually Shows

When You're Reading CoT, the Model Is Thinking Something Else Thinking models are everywhere now. DeepSeek-R1, Claude 3.7 Sonnet, Qwen3.5 — models that show you their reasoning process keep multiplying. When I run Qwen3.5-9B on an RTX 4060, the thinking block spills out lines of internal reasoning.

⚡Key InsightsAI analyzing…

plasmon

📅 Mar 29, 2026·⏱ 10 min read·Dev.to ↗

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https://dev.to/plasmon_imp/80-of-llm-thinking-is-a-lie-what-cot-faithfulness-research-actually-shows-4o2a

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80% of LLM 'Thinking' Is a Lie — What CoT Faithfulness Research Actually Shows

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80% of LLM 'Thinking' Is a Lie — What CoT Faithfulness Research Actually Shows

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