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Write fiction and stories with Claude or ChatGPT

Claude and ChatGPT both brainstorm, draft and critique fiction. Keep your voice in charge.

Picks
7
ranked

Claude and ChatGPT can both help you brainstorm, draft and critique fiction. Anthropic lists developing characters and storylines, brainstorming and feedback on creative writing among what Claude helps with. Both let you keep a story bible in a Project, so every chat starts from the same characters and rules. The risk is generic prose, so write a sample in your own voice and edit what comes back.

Good for

  • Novelists and short-story writers drafting scenes
  • Writers who want feedback on a draft
  • Anyone brainstorming characters, plots and world details
  • Claude Code users who want a de-AI editing skill, or a Chinese web-novel skill

The short answer

Our advice: use whichever assistant gives you drafts you actually want to edit. Put your story bible in a Project, and write the key scenes yourself. Test the same scene in both.

Our advice: use the AI for options and notes. Keep the sentences yours.

Best for

  • Claude or ChatGPT Projects for a story bible shared across chats
  • Either assistant for brainstorming and critique
  • The write skill for cutting stock AI phrasing

Skip it if

  • You plan to publish unedited AI text
  • You need a model trained on your style without sharing your drafts

Draft a story with an AI co-writer

  1. 1

    Set up a story bible

    Create a Project and add characters, setting, tone and a sample of your own writing. Both ChatGPT and Claude Projects keep files and instructions across chats. The writing-fragments skill (Claude Code) interviews you and saves raw fragments to one markdown file you can add to the Project.

    Prompt
    Here is my story bible and a sample of my writing. Describe my voice in five bullet points, then wait.

    Uses writing-fragments

  2. 2

    Outline the beats

    Ask for options, not one answer. Pick, combine and reject.

    Prompt
    Give me three possible next beats for chapter 4. For each, say what changes for the main character.
  3. 3

    Draft scene by scene

    Write the key scenes yourself and ask for a draft of the rest. Keep each request to one scene.

    Prompt
    Draft the scene where Mara finds the letter, in my voice, about 600 words. Do not add new plot.
  4. 4

    Ask for critique

    Use the assistant as a reader. Ask for what to cut, not what to praise.

    Prompt
    Critique this chapter. List what must change, what to improve and what to keep.
  5. 5

    Clean the AI tone and read it aloud

    Cut stock phrases and generic descriptions, then read the result out loud.

    Tip: If a line could sit in any story, rewrite it with a detail only your story has.

    Uses write

Best plugs for this

Our advice: both assistants support the same core job, so the order of the first two is not a quality ranking. The last three rows are for Chinese-language fiction.

  1. 1Claude logo
    ClaudeBuilt inAssistant

    Anthropic lists developing characters and storylines and feedback on creative writing as uses. Projects keep your story bible.

    Free and upPlan
  2. 2ChatGPT logo
    ChatGPTAssistant

    Projects keep chats, files and instructions together. Writing blocks give editable drafts you can revise in place.

    Free and upPlan
  3. 3
    writeSkill

    Edits English or Chinese prose to cut AI patterns instead of swapping in fancier words.

    15,656 installs
  4. 4
    writing-fragmentsSkill

    Interviews you about what you want to write and saves raw fragments to a markdown file with no structure yet.

    506,409 installs
  5. 5
    story-long-writeSkill

    Only if you write Chinese web novels: its SKILL.md is in Chinese. Plans and writes a long web novel from settings and outlines to chapters.

    17,842 installs
  6. 6
    story-short-writeSkill

    Only if you write Chinese short fiction: the skill and its output are in Chinese. Walks Claude through a story from target emotion to final draft.

    17,573 installs
  7. 7
    story-reviewSkill

    Only if you write Chinese web novels: rubrics cover Fanqie, Qidian and Zhihu. Reviews a draft from several angles and returns what must change, what to improve and what can stay.

    16,732 installs

ChatGPT

ChatGPT gives you an in-place editor and Projects for your story bible.

Plan: Any plan. Projects work on Free, with up to 5 files per project.

What it can do

  • Keep chats, files and instructions in a Project
  • Draft in an editable writing block and ask for revisions of selected text
  • Open a draft full screen and undo or redo AI edits
  • Save supported drafts to your Library

Limits

  • Writing block actions vary by plan, device and rollout
  • Free projects allow up to 5 files

Claude

Claude works as a co-writer and critic, with a Project for your story bible. It needs your voice as input.

Plan: Any plan. Paid plans scale Project knowledge with retrieval for large story bibles.

What it can do

  • Help develop characters and storylines (listed in Anthropic's guide for university-sponsored accounts)
  • Brainstorm ideas and give feedback on creative writing (same guide)
  • Keep a story bible and instructions in a Project
  • Create Word or PDF files of a manuscript

Limits

  • Free accounts can create up to five Projects
  • Anthropic says not to use Claude for assignments you must do independently

Questions

What is the best AI for creative writing?

Claude and ChatGPT both brainstorm, draft and critique fiction. Our advice: put the same story bible and scene in both and keep the one whose draft you would rather edit.

Can Claude write a novel?

It can help draft chapters, characters and outlines. Anthropic lists developing characters and storylines and feedback on creative writing among what it helps with. A Project keeps your story bible across chats.

How do I keep characters consistent?

Put a story bible in a Project: characters, setting, timeline, tone and a sample of your writing. Both ChatGPT Projects and Claude Projects reuse files and instructions in every chat.

Is ChatGPT good for creative writing?

It can brainstorm and draft, and its writing blocks let you edit a draft in place and ask for revisions of selected text. Check the result against your voice.

How do I stop it sounding like AI?

Give a sample of your own writing, ask for options rather than finished chapters, and edit hard. The write skill cuts common AI phrasing in English or Chinese prose.

Is there a Claude skill for fiction?

Yes, but for Chinese web fiction. The oh-story skills (story-long-write, story-short-write, story-review) plan, write and review Chinese web novels and short stories, and story-short-write's output is in Chinese. For English prose, the write skill edits AI-sounding text.

Can I use AI text in a published book?

Check the rules of your publisher, contest or platform, and local law. We do not give legal advice.

Is my draft private?

Drafts you paste are sent to the vendor. Data use follows your plan and settings, so check them before you upload an unpublished manuscript.

Is it free?

Yes to start. Projects are available on free accounts for both, with limits: Claude free accounts get up to five Projects, and ChatGPT Free allows up to five files per project.

Sources

Docs, issue trackers and discussions this page is built from.

Show all 5
  1. Use Claude for Education at your university · support.claude.com
  2. What are projects? · support.claude.com
  3. Projects in ChatGPT · help.openai.com
  4. Working with writing blocks and code blocks in ChatGPT · help.openai.com
  5. Create and edit files with Claude · support.claude.com

Updated Nov 3, 2026.