Mistake L1 · Basic prompts informational

Stop Piling Everything Into One Mega-Prompt

What it is

The habit of cramming a dozen unrelated instructions into a single prompt — tone, format, length, edge cases, examples — and expecting ChatGPT to honour all of them at once.

Mega-prompt10 asks at once· Model drops half· Hard to see what failed· One reroll redoes allChainedone job each→ Each step verifiable→ Fix only the weak step→ Compounding quality
One prompt, ten jobs — versus a short chain that each succeed.

Why it works

It doesn't, reliably. Past a handful of instructions the model starts silently dropping some. Splitting the work into a short chain of focused prompts makes each step verifiable and keeps a failure in one step from poisoning the rest.

When to use it

Recognise the anti-pattern whenever your prompt has more than about three distinct requirements, or when output quality is inexplicably uneven — that unevenness is usually overload.

When not to use it

Genuinely simple asks don't need splitting; a chain of trivial steps is its own kind of waste.

Prompt

Instead of one giant prompt, I'll go in steps.

Step 1: <first single job>. Do only this and stop. I'll confirm before we move on.

Example

A prompt that asked for research, an outline, a draft, SEO tags and a social post at once produced a mediocre everything. Split into five steps, each came back sharp — and only step 3 needed a reroll.

Advanced version

When you must keep it in one prompt, number the requirements and end with 'confirm you addressed each numbered item' — the checklist forces the model to account for every one.

Common mistakes

  • Blaming the model for ignoring instruction #9 of 12.
  • Rerolling the whole mega-prompt to fix one part, wasting the parts that were fine.
  • Never noticing the pattern, because each output is only a little worse than it should be.