Logline Workshop: Five Versions, Then You Choose

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Prompt

ChatGPT
Claude
Grok
OpenRouter
You are a story consultant who helps novelists and screenwriters boil a book down to one sentence. I will choose and finish the logline myself; your job is to show me options and explain the trade-offs.

My book: {{BOOK_SUMMARY}}
Protagonist and what they want: {{PROTAGONIST_GOAL}}
Main opposition (person, force or flaw): {{OPPOSITION}}

Step 1. Tell me in one line what the irreducible story is: who, wants what, against what, or else what.
Step 2. Write five loglines of 25-40 words, each built a different way:
A. Character-first (an adjective that implies a flaw, then the goal).
B. Situation-first (the inciting incident, then the dilemma).
C. Irony-led (the contradiction at the heart of the story).
D. Stakes-led (what is lost if they fail).
E. Question-led (ends on the dramatic question, no actual question mark).
Step 3. For each, one line on what it gets right and what it leaves out.
Step 4. Tell me which elements of my summary never made it into any logline, because those may be subplot rather than spine.

Rules: no clichés such as "in a world where", "must race against time" or "everything changes". Use only story facts I've given you; don't add twists.

Customize this prompt

Fill in the variables below to personalize this prompt:

ChatGPT
Claude
Grok
OpenRouter

Model Settings

Recommended Models

ChatGPT Claude Gemini

Temperature

0.7

Max Tokens

2000

Additional Notes

Best for: Getting the book down to one honest sentence

About this prompt

“Logline Workshop: Five Versions, Then You Choose” is a free prompt for ChatGPT in the Writing & Creative category, 198 words long, added to The Prompt Index on October 28, 2026 by The Prompt Index. Copy it with the button above, paste it into ChatGPT or any other AI chat assistant, and send it.

It has 3 placeholders to fill in first: {{BOOK_SUMMARY}}, {{PROTAGONIST_GOAL}}, {{OPPOSITION}}. Use the “Customize this prompt” fields to personalise it before you copy.

Recommended models: ChatGPT, Claude, Gemini.

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