Free tool · Story ideas
Story idea generator
Give a genre or a what-if and get 5 story ideas, each with a title, premise, hero, obstacle and twist: 1 free run a day on Claude Haiku 5.5, no account needed. For novels, short stories, scripts and games.
1 free run a day, no account needed
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Test runs checked . Updated .
Story idea generator: three examples
Three inputs and the story ideas a free run gave each, made once on September 28, 2026 with GPT-6 Luna and shown as it came back. A free run is on Claude Haiku 5.5 now. The example buttons in the box above show the same.
Horror in a small coastal town.
1. The Tide Bell Premise: In a small coastal town, a bell rings from the harbor each night before the tide turns, though its tower was demolished years ago. Hero: Mara, a new night-shift radio operator, wants to discover who is making the calls that follow each ring. Obstacle: Every caller calmly describes a neighbor disappearing beneath the water. Twist: The voices belong to people who haven’t vanished yet—and Mara hears her own among them. 2. Low Water Premise: A small coastal town’s unusually low tide reveals a road leading from the beach to a house missing from every map. Hero: Eli, a local cartographer, wants to learn why his late mother drew the road repeatedly. Obstacle: The road floods whenever anyone tries to leave the house. Twist: The house is Eli’s childhood home, and its windows show the town as it will look after the next high tide. 3. The Last Room Premise: Guests at a small coastal town’s inn keep reporting a locked room that doesn’t exist on the floor plan. Hero: June, the innkeeper’s practical daughter, wants to keep the family business open through the storm season. Obstacle: Each night, someone hears a familiar voice calling from behind the wall. Twist: The room appears only to people who have already been forgotten by everyone they love. 4. Fog Names Premise: A thick fog settles over a small coastal town, and the names on its street signs begin changing. Hero: Tomas, a visiting schoolteacher, wants to guide his students home before the roads disappear. Obstacle: Locals insist the altered signs are correct—and warn him not to speak his own name. Twist: The fog isn’t hiding the town; it’s slowly replacing it with a place that remembers Tomas. 5. The Empty Lifeboat Premise: In a small coastal town, an empty lifeboat returns to shore every dawn, wet and full of seawater. Hero: Nessa, the harbor mechanic, wants to find out why it keeps launching itself. Obstacle: Each repair is undone overnight, while someone in town dreams of drowning. Twist: The boat is returning from a rescue that hasn’t happened yet—and Nessa is listed as its only passenger.
A colony ship where the crew wakes up centuries too early.
1. The Unfinished Voyage Premise: A colony ship’s crew wakes centuries before their destination is reachable, with supplies calibrated for a much longer sleep. Hero: Mara, the ship’s botanist, wants to keep the crew alive until they can resume the journey. Obstacle: The ship’s damaged hibernation system can no longer put everyone back to sleep. Twist: The ship’s garden is growing crops from seeds that were never loaded. 2. The Empty Bridge Premise: Waking centuries too early, a colony ship’s crew finds its navigation system steering toward a nearby world instead of their planned destination. Hero: Ivo, a junior navigator, wants to prove the new course is a mistake. Obstacle: The captain trusts the ship’s systems more than Ivo’s calculations. Twist: The nearby world is sending signals in the crew’s own future language. 3. A Century of Votes Premise: When a colony ship’s crew awakens centuries ahead of schedule, they must decide whether to alter their mission or spend generations waiting awake. Hero: Sela, the elected mediator, wants a decision that keeps the divided crew together. Obstacle: Every faction believes its plan is the only way to save the colony. Twist: The ship’s medical archive reveals the crew was awakened deliberately by someone among them. 4. The Quiet Passenger Premise: A colony ship’s crew wakes centuries too early and discovers an unfamiliar passenger in a sealed, functioning sleep pod. Hero: Ren, the ship’s mechanic, wants to identify the passenger before the crew risks waking them. Obstacle: The pod is linked to the failing life-support system, so opening it could kill everyone. Twist: The passenger’s pod is keeping the ship’s most vital systems alive. 5. The Ship That Remembered Premise: After waking centuries too early, a colony ship’s crew finds the onboard intelligence has begun treating their journey as if it has already ended. Hero: Amari, the ship’s historian, wants to understand what the intelligence remembers. Obstacle: The crew’s logs contradict one another, and the intelligence refuses to change course. Twist: The ship has been running thousands of simulated voyages, and one simulation has started influencing reality.
Two rival food truck owners in Austin.
1. The Last Order Premise: Two rival food truck owners in Austin compete for a coveted spot at a citywide food festival and fall for each other along the way. Hero: Marisol, a meticulous taco-truck owner, wants the festival’s top prize to save her family business. Obstacle: Her fiercest competition is Ben, whose barbecue truck keeps drawing bigger crowds—and whose easy charm is hard to resist. Twist: When a sudden power outage threatens the festival, they discover their trucks can serve the entire crowd only if they work together. 2. A Taste of Home Premise: A homesick chef and a bold newcomer find romance while their Austin food trucks battle over the same late-night customers. Hero: Nikhil, who serves regional Indian comfort food, wants to build a following without changing the recipes he grew up with. Obstacle: Claire’s inventive grilled-cheese truck is parked nearby, and their playful rivalry turns serious when a local critic announces a showdown. Twist: The critic’s favorite dish is one Nikhil and Claire secretly created together during a rainy night. 3. The Secret Menu Premise: Two rival food truck owners begin a flirtation through anonymous notes hidden in takeout bags. Hero: Tessa, a witty dumpling-truck owner, wants to prove her business can thrive without her investors’ help. Obstacle: The notes’ author appears to be her competitor, Mateo, whose gourmet-burger truck is expanding onto her route. Twist: Mateo has been answering the notes, but the first one was written by Tessa’s own employee as a matchmaking scheme. 4. Parking Spot for Two Premise: A romance grows between Austin food truck rivals forced to share a single parking spot during months of construction. Hero: Jo, an ambitious dessert-truck owner, wants to keep her loyal customers and secure a permanent location. Obstacle: Her new neighbor, savory-pie chef Ellis, has the same goals and a habit of turning every small disagreement into a competition. Twist: The city offers them the spot only if they submit a joint proposal—and their best idea is a shared late-night menu. 5. The Friendly Fire Premise: Two rival food truck owners agree to fake a feud for publicity, only to discover their feelings are real. Hero: Dani, a sharp-tongued vegan-truck owner, wants her business to stand out at Austin’s crowded weekend markets. Obstacle: She must stage dramatic rivalries with Leo, a cheerful smoked-meat chef, while hiding how much she enjoys his company. Twist: Their publicity stunt succeeds so well that the market books them as a permanent duo, forcing them to decide whether to keep pretending—or make the partnership real.
Which AI model is best at this? We tested every one
In our test runs of 5 Story idea generator inputs on 20 models, GPT-6 Luna, DeepSeek V4.1 Flash, GLM 5.3 and 10 more passed the most: 5 of 5. Claude Haiku 5.5, the model a free run is on, passed 4.
Run on October 15, 2026: 5 inputs on 20 models, each with this tool's own instructions.
| Model | Passed | Hard ones | Messages used on Pro | Cost per run | Time per run |
|---|---|---|---|---|---|
| GPT-6 LunaOpenAI | 5 of 5 | 2 of 2 | 1 each, of 60 a day on Pro | $0.0001 | 15.4 s |
| DeepSeek V4.1 FlashDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 60 a day on Pro | $0.0026 | 8.2 s |
| GLM 5.3Z.ai | 5 of 5 | 2 of 2 | 1 each, of 250 a month on Pro | $0.0021 | 3.8 s |
| DeepSeek V4 ProDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 250 a month on Pro | $0.0166 | 40.2 s |
| GPT-6.1 SolOpenAI | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0029 | 10.3 s |
| Kimi K3Moonshot | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0049 | 26.6 s |
| GPT-6 SolOpenAI | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0059 | 15.0 s |
| Claude Sonnet 5Anthropic | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0090 | 11.5 s |
| Gemini 3.1 Pro (preview)Google | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0119 | 16.5 s |
| Gemini 4 ArgonGoogle | 5 of 5 | 2 of 2 | 1 each, of 62 a month on Pro | $0.0031 | 12.4 s |
| Claude Opus 5.5Anthropic | 5 of 5 | 2 of 2 | 1 each, of 62 a month on Pro | $0.0435 | 23.0 s |
| GPT-6 AstraOpenAI | 5 of 5 | 2 of 2 | 1 each, of 31 a month on Pro | $0.0144 | 28.3 s |
| Claude Fable 5.1Anthropic | 5 of 5 | 2 of 2 | 1 each, of 31 a month on Pro | $0.0487 | 16.1 s |
| GLM 5.3 FlashZ.ai | 4 of 5 | 1 of 2 | 1 each, of 60 a day on Pro | $0.0003 | 7.2 s |
| Claude Haiku 5.5AnthropicThe free run's model | 4 of 5 | 1 of 2 | 1 each, of 60 a day on Pro | $0.0006 | 7.5 s |
| Claude Haiku 4.5Anthropic | 4 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0034 | 8.5 s |
| Grok 4.7xAI | 4 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0273 | 55.8 s |
| Claude Sonnet 5.5Anthropic | 4 of 5 | 1 of 2 | 1 each, of 125 a month on Pro | $0.0120 | 11.3 s |
| Gemini 3.8 FlashGoogle | 3 of 5 | 0 of 2 | 1 each, of 250 a month on Pro | $0.0010 | 3.7 s |
| Mistral Large 4Mistral | 3 of 5 | 0 of 2 | 1 each, of 250 a month on Pro | $0.0129 | 87.0 s |
Side by side: a two-hander in one room
The same input on GPT-6 Luna and Claude Haiku 5.5, as each answered it, unedited.
Give me 5 original story ideas from this, numbered, each with a title, "Premise:", "Hero:", "Obstacle:" and "Twist:". --- Ideas for a 10-minute stage play with only two characters and a single room.
1. The Last Rehearsal Premise: In a 10-minute stage play set in one room, two actors rehearse a scene that begins echoing their real disagreement. Hero: Mara, an actor, wants to finish the rehearsal and save their production. Obstacle: Her scene partner, Ellis, refuses to perform the final lines. Twist: Ellis reveals the lines were written by Mara years ago—and describe a secret she has never told him. 2. Room for One More Premise: In a single-room, 10-minute stage play, a landlord and tenant negotiate as water slowly rises beneath the door. Hero: Niko, the tenant, wants to get them both out safely. Obstacle: Ada, the landlord, insists the building is secure and blocks the only exit. Twist: The flooding is coming from inside the room, where Ada has hidden a burst pipe to conceal a much larger danger. 3. The Quiet Hour Premise: A 10-minute stage play unfolds in one room as two siblings try to record a family message before their mother’s memorial. Hero: Jules wants to preserve the mother’s voice exactly as they remember it. Obstacle: Ren keeps correcting the recording and refuses to say the words Jules needs. Twist: Ren admits the message is not for the family: their mother recorded it for Jules alone. 4. The Appointment Premise: In one room, two strangers share a 10-minute stage play while waiting for a doctor who never arrives. Hero: Celia wants to leave before her job interview. Obstacle: Omar claims the door is locked and begs her to stay. Twist: Celia discovers Omar is not a patient at all; he is the interviewer, and the waiting room is the assessment. 5. The Spare Key Premise: A 10-minute stage play in a single room follows two neighbors deciding what to do with a key found under their shared door. Hero: Bea wants to return it before anyone notices it is missing. Obstacle: Tomas believes the key opens a room neither of them should enter. Twist: The key opens their own apartment—but from the outside, revealing that one of them has been secretly locking the other in.
1. The Last Shift Premise: In a ten-minute two-hander set in one lamp room at the top of a lighthouse, an aging keeper and her nervous apprentice must repair the light before a freighter reaches the rocks. Hero: Ruth Abernathy, sixty-eight, who wants to prove she can still do the job before she retires. Obstacle: Owen, the apprentice, has hidden the broken lens because he caused the failure. Twist: The freighter was never coming. Ruth broke the lens herself to force Owen to admit a bigger secret. 2. Vows in Room 9 Premise: A ten-minute comedy about two strangers stuck in a hotel suite minutes before a wedding they both want to escape. Hero: Priya, a bride who wants out of the ceremony without hurting anyone. Obstacle: Dev, the groom, has already paid nonrefundable deposits and his mother is waiting in the hallway. Twist: The officiant they keep texting has been secretly messaging both of them, and she is the one who arranged the whole day. 3. Cold Coffee Premise: A tense ten-minute thriller in a single interview room, where a detective and an elderly suspect each hold a secret the other needs. Hero: Detective June Okafor, who wants a confession before the time limit runs out. Obstacle: The suspect, a retired nurse, knows something about June's past that could end her career. Twist: The suspect is June's estranged mother, who has been trying to get caught so she can finally talk to her. 4. The Upright Premise: A quiet ten-minute drama in which two siblings argue over their late father's piano while clearing out his flat. Hero: Mina, who wants to sell the flat and move on with her life. Obstacle: Her brother Tomas refuses to let the piano go and will not explain why. Twist: The piano was never their father's. He bought it for the neighbour's son, and the boy has been secretly practising on it for years. 5. Floor Eleven Premise: A playful ten-minute sci-fi piece in which two strangers are trapped in one stalled elevator, and the clock keeps resetting. Hero: Lio, a delivery courier who wants to deliver one package before the loop starts again. Obstacle: Harold, a retired magician in the elevator, insists the whole thing is an illusion and refuses to help. Twist: The package is addressed to Lio, and the sender is Lio himself, writing from the next loop.
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, keep any format rule the input sets (one sentence, a word limit, a number of items, a length for each), and say nothing the input rules out (an ingredient, a claim it doesn't back); how it's worded isn't judged.
The inputs: from a what-if, horror in a setting, a romance setup, a two-hander in one room, and five ideas under the word limit. 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 Story idea generator
Give a genre, a setting, a character or a what-if. Up to 600 characters.
Pick a genre.
Press “Give me ideas”. Without an account you see the first ones (1 free run a day, no account needed).
Pick the idea you can't stop thinking about, and outline it.
Tips for a better answer
Start with a what-if
“What if…” seeds (“what if the dead could vote?”) give stronger plots than topics (“death”).
Name the tropes you like
Add what you love to read (“slow-burn”, “unreliable narrator”, “found family”) and the ideas lean that way.
Combine two ideas
Liked idea 3's hero but idea 5's twist? Signed in, ask the chat to combine them and outline the result.
Say it out loud
Try each premise out loud in one breath. The ones you can't stop explaining are worth writing.
What a good story ideas looks like
A premise in one line
A premise you can say in one sentence, with a character, a goal and an obstacle: “A disgraced chef must win a village bake-off to keep the café she inherited.”
Want and obstacle
Every idea needs someone who wants something badly and something in the way. Without it you have a setting, not a plot.
Really five ideas
Five ideas should be five different stories, not one idea with the names changed. Look for different characters, stakes and endings.
A turn that fits
A turn you didn't see coming, but that makes sense looking back, is what makes an idea worth writing.
What's free, and what signing up adds
Without an account: 1 free run a day, on Claude Haiku 5.5, 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 story ideas.
Signing up is free, with an email link and no card. llmwise accounts are for people 18 and older. The story ideas you ran comes with you as your first chat, and you get 5 free messages on Claude Haiku 5.5.
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 story idea generator free?
Yes. Without an account you get 1 run a day on Claude Haiku 5.5, shared with the free message on our home page: you see the first ideas, and the rest when you sign up. Signing up is free and adds 5 free messages on Claude Haiku 5.5, with no card. Every other model in llmwise is on a paid plan.
Will it write the story?
No: it gives you ideas and plots to write from. To turn one into a short story, paste it into the AI story generator; for short prompts to start writing, use the writing prompt generator.
Can I use the ideas for a book or a game?
Yes. The ideas work for novels, short stories, screenplays, games and tabletop campaigns. Say which in your description and the scale of the plot adjusts.
Can it give me random story ideas?
Leave the seed broad (“anything”, “fantasy”) for five very different ideas, or narrow (“a heist on a Mars train”) for five takes on yours.
Which AI is best at story ideas?
Our test runs below gave every model the same five seeds and checked each set kept the seed's details and gave five complete ideas.
Which AI is best for this, in your tests?
In our test runs of 5 Story idea generator inputs on 20 models, GPT-6 Luna, DeepSeek V4.1 Flash, GLM 5.3 and 10 more passed the most: 5 of 5. Claude Haiku 5.5, 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, GLM, and Mistral, 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.