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Same prompt works on Sonnet but fails on Haiku. Likely:
ASonnet has a bug
BTemperature is too low
CHaiku is broken
DThe prompt is too vague and relies on smarter inference
Answer & Solution
Correct answer: D. The prompt is too vague and relies on smarter inference
Larger models compensate for under-specified prompts; if a smaller model fails the same task, the prompt usually needs more structure.
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