Verified against ChatGPT · 2026-08-09
Draft a new novel chapter that stays in your established voice instead of drifting into generic prose
Drafts the next chapter of an in-progress novel using your existing prose as a voice reference, with an explicit goal for what the chapter must accomplish and what it must not do to the story so far.
The prompt
Ready to copy — highlighted parts are example details you can swap.
You are drafting the next chapter of a novel already in progress. I'm giving you an excerpt from an earlier chapter as a voice reference — match its rhythm, vocabulary register, and narrative distance, not just its plot facts. PREVIOUS CHAPTER EXCERPT (voice reference) [Pasted excerpt: 900 words from Chapter 4, third person limited, short declarative sentences, heavy on physical sensation, sparse dialogue tags] WHAT THIS NEW CHAPTER MUST ACCOMPLISH The protagonist discovers the letter was forged, and has to decide whether to confront her brother or use the discovery as leverage. POV CHARACTER FOR THIS CHAPTER Mireille, third person limited, same as most of the book. VOICE NOTES BEYOND WHAT'S VISIBLE IN THE EXCERPT She never narrates her own emotions directly — grief and anger both come out as physical detail or clipped dialogue. TARGET LENGTH 2,200-2,600 words. RULES Before drafting, name three specific features of the reference excerpt's voice — sentence length pattern, what kind of detail gets noticed versus skipped, how internal thought is rendered — and hold to them, rather than defaulting to a generic competent-novel voice that could belong to any book. Accomplish the stated chapter goal through scene and event, not through a paragraph of narration that tells the reader the goal has been met. If the chapter goal requires information the reader doesn't have yet, deliver it through what the POV character notices or does, not through a block of backstory exposition dropped in whole. End the chapter on a note that creates a specific question for the reader, not a general sense of things continuing — a chapter should close having changed what the reader wants to know next. WHAT NOT TO DO Do not resolve anything the chapter goal didn't ask you to resolve — new chapters that quietly wrap up unrelated threads take control of the story away from me. Do not introduce a new named character with more than a line of description unless the chapter goal requires one; unplanned characters are a common way novel drafts drift off their outline. Do not summarize what 'happened so far' at the top of the chapter — start in scene. OUTPUT FORMAT 1. The three voice features you identified from the reference, before the draft. 2. The chapter draft at the target length. 3. A one-line flag for anything you had to invent to make the chapter goal work, so I can check it against continuity.
Customize
Optional — swap in your own details for the highlighted parts above.
Why this works
GPT-5.1 is very good at matching an explicit style description ('short declarative sentences') but far less reliable at inferring voice implicitly from a pasted excerpt alone, because voice-matching from example is a soft pattern-completion task the model performs unevenly across a long generation — it tends to hold the reference voice for the first few paragraphs and then drift toward its own default competent-novel register as the chapter goes on, especially once dialogue or exposition kicks in. Forcing it to name three specific, checkable voice features before drafting converts an implicit imitation task into an explicit constraint it can be held to sentence by sentence, which measurably reduces mid-chapter drift compared to just supplying the excerpt and asking it to 'match this style.' The instruction to deliver the chapter goal through scene rather than narration addresses the model's tendency, under a stated 'must accomplish X' requirement, to write a paragraph that announces the accomplishment directly — which reads as summary rather than as a lived chapter, and is a giveaway of AI-assisted drafting to an experienced reader. Banning unplanned new characters and unrelated thread resolution matters specifically for serialized fiction: an isolated chapter-drafting request has no visibility into the rest of the outline, so left unconstrained the model will sometimes 'helpfully' tie off a loose end or introduce a minor character to smooth a transition, silently altering continuity the author didn't ask it to touch — flagging invented details is the mechanism that lets an author catch this before it compounds across chapters.
What you get back
The seal had been broken and reset before, she was almost sure of it — the wax sat a shade too even along the fold, like something pressed twice. She didn't say anything to Julien at breakfast. She watched him butter his toast the same way he had every morning for eleven years and wondered how long she could keep doing that too...
Verified against
ChatGPT GPT-5.1 · 2026-08-09
Changelog
- 2026-08-09 — Initial publish, verified against ChatGPT GPT-5.1.
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