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The Promptliness Blog

Field notes on prompt engineering, the AI models worth using, and workflows that actually stick.

Prompt Engineering

Model-Specific Prompt Engineering | How to Write for ChatGPT, Claude, and Gemini

A five-star prompt in ChatGPT is often a two-star prompt in Claude. Copy the exact same instructions into Gemini and you’ll get a third, completely different result. If you’ve felt that whiplash, you’re not imagining it: it’s not a “you” problem, it’s an architecture problem. Each model is trained on different data, shaped by different...

Kumail Kazmi · September 27, 2026 · 7 min read