Why Do Different LLMs Give Different Answers to the Same Question?

Posted on Thu 17 September 2026 in Beginner Guide • Tagged with GenAI, LLM, model-comparison, beginner, training-data

Why This Matters

Ask ChatGPT, Claude, and Gemini the exact same question, and you'll often get three noticeably different answers — different structure, different tone, sometimes even different facts or conclusions. As a beginner, this used to confuse me. If they're all "AI," shouldn't they all just... know the same things …


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