Free tool · Writing prompts
Writing prompt generator
Give a theme and get 5 fresh writing prompts, each with a character, a detail and something at stake: 1 free run a day on GPT-6 Luna, no account needed. For story writers, poets, journaling and debate practice.
1 free run a day, no account needed
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Test runs checked . Updated .
Writing prompt generator: three examples
Three inputs and the prompts a free run gave each, made once on September 28, 2026 with GPT-6 Luna and shown as it came back. The example buttons in the box above show the same.
A mystery on a night train.
1. On the overnight train from Prague to Vienna, conductor Irena finds a locked compartment with no passenger listed and a fresh ticket punched for a station the train stopped serving decades ago; before dawn, she must decide whether to open the door or obey the order to keep it sealed. 2. When renowned violinist Tomas Varga vanishes between two carriages, his assistant discovers his empty case contains a stranger’s wedding ring and a note naming the next passenger to die. The train is hurtling through a snowstorm, and nobody can get off. 3. Every night at 2:17, the same woman boards the train at a station that isn’t on the route, sits beside retired detective Malik, and whispers a different clue to an unsolved murder. Tonight, she gives him the name of his own daughter. 4. A porter finds a bloodstained timetable in a dining car after a blackout, with one passenger’s name crossed out in ink that is still wet. As the lights flicker back on, each traveler insists they’ve never seen the missing passenger. 5. On the last run of the Meridian Express, young chef Nessa discovers that the train’s celebrated clockmaker has been dead for three days—yet someone is still winding the clocks, and they’re counting down to a bridge no one remembers crossing.
Starting over in a new city.
1. When you arrived in your new city, what small detail made it feel real—a street name, a sound through the window, or a place you passed every day—and what did you hope it might become for you? 2. What part of your old life did you bring with you, literally or emotionally, and how does holding on to it help or hinder the person you’re trying to become? 3. Think of a moment when you felt like an outsider in your new city. What did you tell yourself then, and what might have changed if you had made one small attempt to connect? 4. Which familiar routine have you rebuilt since starting over, and what does it protect you from—or give you courage to face? 5. If you had to decide today whether to stay in your new city for another year, what would weigh most heavily in your choice, and what might you lose by leaving or by staying?
Technology in everyday life.
1. Should schools replace most printed textbooks with tablets? Supporters might argue that tablets are cheaper over time and keep learning materials up to date; opponents might argue that screens distract students and printed books are easier to use. 2. Should employers be allowed to require workers to respond to messages after work hours? Supporters might argue that quick replies help teams handle urgent problems; opponents might argue that workers need protected time to rest and be with family. 3. Should cities use facial recognition cameras in public spaces to prevent crime? Supporters might argue that the technology can help identify suspects and find missing people; opponents might argue that it threatens privacy and can wrongly target innocent people. 4. Should parents limit children’s daily time on smartphones, even when the phones are used for schoolwork? Supporters might argue that limits protect sleep, attention, and face-to-face relationships; opponents might argue that children need to learn responsible habits and use phones to stay connected. 5. Should people be encouraged to use self-checkout machines instead of staffed checkout lanes? Supporters might argue that self-checkout saves time and gives shoppers more choice; opponents might argue that it eliminates jobs and makes shopping harder for people who need assistance.
Which AI model is best at this? We tested every one
In our test runs of 5 Writing prompt generator inputs on 15 models, DeepSeek V4.1 Flash, Grok 4.7, GPT-6 Sol and 4 more passed the most: 5 of 5. GPT-6 Luna, the model a free run is on, passed 4.
Run on September 28, 2026: 5 inputs on 15 models, each with this tool's own instructions.
| Model | Passed | Hard ones | Messages used on Pro | Cost per run | Time per run |
|---|---|---|---|---|---|
| DeepSeek V4.1 FlashDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 60 a day on Pro | $0.0010 | 5.2 s |
| Grok 4.7xAI | 5 of 5 | 2 of 2 | 1 each, of 250 a month on Pro | $0.0075 | 29.4 s |
| GPT-6 SolOpenAI | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0017 | 4.7 s |
| Kimi K3Moonshot | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0033 | 11.2 s |
| Claude Opus 5.5Anthropic | 5 of 5 | 2 of 2 | 1 each, of 62 a month on Pro | $0.0164 | 10.1 s |
| GPT-6 AstraOpenAI | 5 of 5 | 2 of 2 | 1 each, of 31 a month on Pro | $0.0103 | 33.4 s |
| Claude Fable 5.1Anthropic | 5 of 5 | 2 of 2 | 1 each, of 31 a month on Pro | $0.0256 | 9.2 s |
| GPT-6 LunaOpenAIThe free run's model | 4 of 5 | 1 of 2 | 1 each, of 60 a day on Pro | $0.0001 | 3.0 s |
| GLM 5.3 FlashZ.ai | 4 of 5 | 1 of 2 | 1 each, of 60 a day on Pro | $0.0002 | 9.4 s |
| Gemini 3.8 FlashGoogle | 4 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0008 | 3.7 s |
| GLM 5.3Z.ai | 4 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0012 | 2.1 s |
| DeepSeek V4 ProDeepSeek | 4 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0050 | 10.7 s |
| Claude Sonnet 5Anthropic | 4 of 5 | 1 of 2 | 1 each, of 125 a month on Pro | $0.0049 | 7.2 s |
| Gemini 3.1 Pro (preview)Google | 4 of 5 | 1 of 2 | 1 each, of 125 a month on Pro | $0.0100 | 14.4 s |
| Claude Haiku 4.5Anthropic | 3 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0018 | 5.1 s |
Side by side: debate topics with two sides
The same input on DeepSeek V4.1 Flash and GPT-6 Luna, as each answered it, unedited.
Give me 5 original writing prompts on this theme, numbered, each one to three sentences with something at stake. Make them debate topics for argument-writing practice: each an arguable question, then one line on what each side might argue. --- Cars in city centres.
1. Should York charge drivers £9 a day to enter the city centre inside the old walls, with the money ring-fenced for buses and cycle lanes? Supporters point to cleaner air and quieter streets, while critics say the charge punishes nurses and shop workers who cannot afford to live near where they work. 2. Should Hartley High Street stay closed to private cars every Saturday, even though Maria, who has run the flower stall there for twenty years, says her elderly customers can no longer park within four hundred yards of her? One side argues that footfall, safety and air quality improve when streets go car-free; the other says traders and disabled shoppers pay the price for a policy designed around people who live within walking distance. 3. Should plumbers, electricians and delivery vans be exempt from a city's car-free zone, or should only bikes, cargo bikes and buses be allowed inside it? Exemptions keep essential trades working and keep the city functioning; the counter-argument is that every exemption carved out for a van hollows the ban down to nothing. 4. Should Bristol strip the on-street parking from Derby Road to build a protected cycle lane and two parklets, even though residents there pay £120 a year for their permits? Cyclists and families gain a safe route and a bit of greenery; permit holders say they were sold parking that is now being taken away without replacement. 5. Should parents be banned from driving to the gates of St Aidan's Primary at drop-off, with fines for anyone who does? Supporters say the school run causes a fifth of morning traffic and puts children at risk at the crossing; opponents say parents on early shifts with no bus route have no other way to get their kids there on time.
1. Should private cars be banned from city centres? Supporters argue that bans reduce pollution, noise, and traffic injuries; opponents argue they restrict access for people who cannot easily use public transport. 2. Should city-centre drivers pay a congestion fee? Supporters say the fee discourages unnecessary trips and funds better transit; opponents say it unfairly burdens workers and small businesses. 3. Should cities remove parking spaces in their centres to make room for bike lanes and wider pavements? Supporters argue the change makes streets safer and more welcoming; opponents argue it drives customers away and makes deliveries harder. 4. Should residents of city centres be allowed to keep driving their cars into restricted zones? Supporters say residents need practical access to their homes; opponents argue that exemptions weaken the rules and preserve traffic problems. 5. Should city centres prioritize car access during bad weather or public-transit disruptions? Supporters argue people need reliable alternatives when buses and trains fail; opponents say opening streets to cars can create gridlock precisely when conditions are most difficult.
How the inputs are scored
- Key facts: the answer must state each fact the input turns on (a number, a name, a date or a condition), as the input gives it; how it's worded isn't judged.
- Rubric (graded): the grader model scores it from 1 to 5 on each published criterion; it passes with an average of 4 or more and no criterion under 3.
The inputs: story prompts around one character, journaling about a big change, poem prompts from one image, debate topics with two sides, and a constraint carried through all five. Every model gets the tool's own instructions and up to Pro's reply limit. The method is the same as our other test runs.
How to use the Writing prompt generator
Give a theme, a genre or a detail to build on. Up to 600 characters.
Pick what the prompts are for: stories, poems, journaling or debate practice.
Press “Give me prompts”. Without an account you see the first ones (1 free run a day, no account needed).
Pick the prompt that makes you want to start, and write for ten minutes without stopping.
Tips for a better answer
Write before you think
Set a timer for ten minutes and write without stopping or editing. The prompt is a door, not a plan.
Add a constraint
Add a constraint to your theme (“no dialogue”, “told backwards”, “in 100 words”) and the prompts will carry it.
Share them
For a class or a writing group, run it once and give everyone the same five: comparing where each person went is half the fun.
Go deeper on one
Liked prompt 3? Signed in, ask for five more in its direction in the same chat.
What a good prompts looks like
Something at stake
A good prompt has someone who wants something and something in the way. “A woman finds a key” is a start; “a woman finds a key to the house she sold yesterday” is a story.
One concrete detail
A name, a place, an object: one specific detail gets you writing faster than a big theme like “loss” or “change”.
Five different angles
Five prompts should go five ways: different characters, tones and angles on your theme, not the same idea reworded.
Room to write
It leaves the writing to you. A prompt that runs to a paragraph of plot has done the fun part for you.
What's free, and what signing up adds
Without an account: 1 free run a day, on GPT-6 Luna, shared with the free message on our home page. It takes up to 600 characters, writes up to about 600 tokens (roughly 450 words), and shows you the start of the prompts.
Signing up is free, with an email link and no card. llmwise accounts are for people 18 and older. The prompts you ran comes with you as your first chat, and you get 5 free messages on almost every model (all but Claude Fable 5.1, Claude Opus 5.5, and GPT-6 Astra).
Signed in, the tool runs on the model you pick, on your plan, shows the whole answer, and you can carry on in the chat with any model, or ask another model the same thing.
More free tools are on the tools page, and what each plan gives is on pricing.
Questions
Is the writing prompt generator free?
Yes. Without an account you get 1 run a day on GPT-6 Luna, shared with the free message on our home page: you see the first prompts, and the rest when you sign up. Signing up is free and adds 5 free messages on almost every model in llmwise (all but Claude Fable 5.1, Claude Opus 5.5, and GPT-6 Astra), with no card.
Will it write the story for me?
No: it writes prompts to start you off, not the story, poem or essay. For a full short story from an idea of your own, there's the AI story generator.
Can it make prompts for essay or debate practice?
Pick “Debate topics” for arguable questions with two real sides, the kind used for argument-writing practice and debate clubs. It gives the question and what each side might argue, and leaves the writing to you.
Can I get random prompts?
Yes. Leave the theme broad (“anything”, “summer”) for variety, or narrow (“a lighthouse, told by the lighthouse”) for five takes on one idea.
Which AI writes the best prompts?
Our test runs below give every model the same five themes and check that its prompts keep the theme and details, with a grader model scoring the hardest ones on published criteria.
Which AI is best for this, in your tests?
In our test runs of 5 Writing prompt generator inputs on 15 models, DeepSeek V4.1 Flash, Grok 4.7, GPT-6 Sol and 4 more passed the most: 5 of 5. GPT-6 Luna, the model a free run is on, passed 4. The table on this page has every model's result, what a run counts as on Pro, and the time it took.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.
See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.