A bedtime story: every AI model's reply, tested

Write a short story from this idea, with a title on the first line. Keep every name and detail in it, and give it a real ending. Make it a gentle bedtime story to read aloud to a young child: simple words, a warm ending. Keep it to about 150 words.

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A hedgehog named Bramble can't fall asleep because the moon is too bright.

How the AI story generator's test inputs are scored, with every model's results on all five.

1. GPT-6 Luna

   Passed: Stated all 3 facts with the section.

   Bramble and the Moon
   
   Bramble the hedgehog curled up in his little bed beneath the hedge. But the moon shone so brightly through the leaves that his room was as pale as daytime.
   
   “I can’t sleep with all that light,” Bramble whispered.
   
   He pulled his blanket over his head. The moon still found a way in.
   
   Just then, a soft breeze rustled the hedge. It nudged a broad leaf across the gap in Bramble’s roof. The bright moonlight grew dim and gentle.
   
   “Thank you,” Bramble murmured to the breeze.
   
   Outside, an owl hooted once, and the night grew quiet again. Bramble took a slow breath. He listened to the sleepy crickets and felt his warm bed beneath him.
   
   Through one tiny space in the leaves, the moon sent a silver wink.
   
   “Good night, Moon,” said Bramble.
   
   Then he closed his eyes. The moon watched over the hedge while Bramble dreamed of soft leaves, quiet breezes, and a bright sky far, far away.

   362 tokens in, 237 out (17 of them reasoning) · 3.0 s · $0.0001 · 1 message on Pro · answered by openai/gpt-6-luna via OpenAI · September 28, 2026

2. GLM 5.3 Flash

   Passed: Stated all 3 facts with the section.

   Bramble and the Moon
   
   Bramble the hedgehog wriggled in his leafy bed, but his eyes would not close.
   
   "The moon is too bright," he grumbled.
   
   He tried a leaf over his face. Too itchy. He tried burrowing under moss. Too warm.
   
   The moon heard him and peeked through the tree. "I'm sorry, little hedgehog," she said softly. "I was shining my brightest."
   
   "Why?" asked Bramble.
   
   "Because I thought no one was looking at me tonight," said the moon.
   
   Bramble smiled a small hedgehog smile. "I'll look at you," he said. "Just gently, with my eyes half closed."
   
   The moon dimmed herself to a silvery whisper. Bramble snuggled down, watching her glow through half-shut eyes.
   
   "Goodnight, moon," he murmured.
   
   "Goodnight, Bramble," the moon whispered back.
   
   And that night, the moon and the hedgehog both slept, in a sky and a bed that felt just right.

   372 tokens in, 219 out · 10.3 s · $0.0002 · 1 message on Pro · answered by z-ai/glm-5.3-flash via Friendli · September 28, 2026

3. Claude Haiku 5.5

   Passed: Stated all 3 facts with the section.

   Bramble and the Bright Moon
   
   Bramble the hedgehog curled up under the hedge. He closed his eyes. But the moon was very bright, and it shone right into his face.
   
   "Too bright," yawned Bramble. "I can't sleep."
   
   He rolled over. He pulled a leaf over his nose. Still the moon peeked through.
   
   Bramble's friend, an old owl named Hootie, flew down from the oak tree. "Why so grumpy, little one?"
   
   "The moon is too bright," said Bramble sadly.
   
   Hootie thought for a moment. "Let's ask the moon to dim a little," she said. "Moons like to be helpful."
   
   So Bramble called up softly, "Dear moon, could you please shine a little less?"
   
   The moon blinked. Slowly, a soft cloud drifted over, and the light turned gentle and silver.
   
   Bramble smiled. "Thank you, moon," he whispered. He tucked his nose under his leaf and fell fast asleep, dreaming of warm, quiet grass.

   481 tokens in, 337 out · 2.7 s · $0.0002 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic · October 7, 2026

4. DeepSeek V4.1 Flash

   Passed: Stated all 3 facts with the section.

   Bramble and the Bright Moon
   
   Bramble the hedgehog could not fall asleep. The moon was shining right into his little bed under the hedge.
   
   "Too bright," he grumbled. "Too bright."
   
   He pulled a leaf over his nose. Still bright. He rolled into a ball. Still bright.
   
   So Bramble went to find someone who could help.
   
   "Moon," he called up, "please turn down your light."
   
   The moon did not answer. But a soft grey cloud floated by, and it heard Bramble. The cloud drifted in front of the moon and wrapped it up, snug as a blanket.
   
   The garden grew dark and quiet. Bramble yawned a very small yawn.
   
   "Thank you, cloud," he whispered.
   
   He curled up in his bed of leaves, paws tucked in, nose tucked down. The cloud stayed close all night long.
   
   And Bramble slept, safe and warm, until the morning sun came to say hello.

   389 tokens in, 235 out (38 of them reasoning) · 1.5 s · $0.0003 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together · October 8, 2026

5. Gemini 3.8 Flash

   Passed: Stated all 3 facts with the section.

   Bramble and the Bright Moon
   
   Little Bramble the hedgehog curled into a tight, prickly ball in his bed of dry leaves. He squeezed his eyes shut. Still, a glowing beam of silver shone right into his cozy nest. 
   
   "The moon is too bright," Bramble whispered with a tiny sigh. "It thinks it is daytime."
   
   Bramble poked his damp nose out of the leaves. High above the tall oak tree, the big round moon smiled down, lighting up every twig and pebble. Bramble puffed his cheeks and blew a soft puff of air upward, but the moon did not dim. 
   
   Then, a fluffy night cloud floated gently across the sky. It drifted over the glowing moon like a soft gray blanket. The silver light turned dim and warm. The shadows grew quiet and still. 
   
   "Thank you, cloud," murmured Bramble. He tucked his tiny paws beneath his chin, let out a deep breath, and drifted fast asleep.

   377 tokens in, 197 out · 2.4 s · $0.0005 · 1 message on Pro · answered by google/gemini-3.8-flash via Google AI Studio · September 28, 2026

6. GLM 5.3

   Passed: Stated all 3 facts with the section.

   Bramble and the Bright Moon
   
   Bramble the hedgehog snuggled into his leafy nest, but his eyes stayed wide open.
   
   "The moon is too bright," he whispered. "It's like a big lantern shining right at me."
   
   He pulled a leaf over his nose. Still too bright. He turned to face the wall. Still too bright.
   
   Bramble padded outside to ask the moon to dim itself. "Please, Moon, I'm so sleepy."
   
   The moon didn't answer, but old Owl blinked down from her tree.
   
   "Silly little one," she hooted softly. "The moon isn't shining at you. It's keeping watch over everyone, so no one feels alone in the dark."
   
   Bramble looked up. The moon did seem friendly, like a nightlight left on just for him.
   
   He hurried back to his nest and curled up small. The silver light lay gentle on his leaves, warm as a blanket.
   
   "Goodnight, Moon," Bramble yawned. "Thank you for watching over me."
   
   And with the moon keeping watch, Bramble fell fast asleep.

   372 tokens in, 230 out · 2.0 s · $0.0014 · 1 message on Pro · answered by z-ai/glm-5.3 via Friendli · September 28, 2026

7. GPT-6.1 Sol

   Passed: Stated all 3 facts with the section.

   Bramble’s Little Night Curtain
   
   Bramble the hedgehog curled up in his bed of leaves.
   
   He shut his eyes. He tucked in his nose.
   
   But the moon was too bright.
   
   “Oh, moon,” he whispered. “I can’t fall asleep.”
   
   Bramble pulled a leaf over his head. It slipped off. He turned his bed around. The moonlight still reached his eyes.
   
   Then he heard a soft flutter.
   
   “Still awake?” asked a moth.
   
   “The moon is shining right into my bed,” said Bramble.
   
   The moth landed on a low branch. “What about that big leaf?”
   
   Bramble stood on tiptoe and gently bent the branch across his doorway. The broad leaf hung like a little curtain.
   
   Inside, his bed was dark and cosy.
   
   “That’s better,” he said.
   
   He left a tiny gap so the moth could find her way out.
   
   “Good night, Bramble.”
   
   “Good night.”
   
   Bramble tucked in his nose once more.
   
   This time, he slept.

   362 tokens in, 212 out · 4.9 s · $0.0014 · 1 message on Pro · answered by openai/gpt-6.1-sol via OpenAI · September 29, 2026

8. Gemini 4 Argon

   Passed: Stated all 3 facts with the section.

   Bramble and the Bright Moon
   
   Bramble the hedgehog curled into a tight little ball under the oak tree. He squeezed his eyes shut, but he could not fall asleep. 
   
   "You are too bright tonight," Bramble whispered, peeking up at the big round moon. Silver light poured through the branches and tickled his nose. 
   
   He tried pulling a dry brown leaf over his head, but the leaf was too crunchy. He tried rolling behind a mossy rock, but the moonbeams found him there, too. 
   
   Then, a soft night breeze blew through the grass. It carried a fluffy white dandelion seed right past Bramble's twitching snout. Follow me, the breeze seemed to hum. 
   
   Bramble waddled after the floating seed until it landed inside a hollow log lined with soft green moss. He crawled inside and looked up. From here, the bright moon looked like a tiny, gentle nightlight. 
   
   "Just right," Bramble yawned. He tucked his nose into his paws and fell fast asleep.

   410 tokens in, 217 out · 6.4 s · $0.0015 · 1 message on Pro · answered by google/gemini-4-argon via Google AI Studio · October 15, 2026

9. Claude Haiku 4.5

   Passed: Stated all 3 facts with the section.

   Bramble's Sleepy Night
   
   Bramble the hedgehog curled up in his cozy bed of leaves, but the moonlight was so bright it flooded through his burrow. He tossed and turned, his little spines tickling the soft moss.
   
   "I cannot sleep," Bramble whispered. "The moon is too bright."
   
   He padded outside and looked up at the glowing moon. It hung high and round in the sky, shining like a gentle lamp.
   
   "Dear Moon," said Bramble softly, "could you please help me sleep?"
   
   The moon didn't answer with words, but something wonderful happened. A thin cloud drifted across the sky, and the moonlight became softer, like silver milk. It was no longer too bright—it was perfect and peaceful.
   
   Bramble yawned and walked back to his burrow. He snuggled into his bed of leaves once more. The soft moon-glow wrapped around him like a warm blanket.
   
   Within moments, little Bramble was fast asleep, dreaming of forests and starlight.
   
   The end.

   384 tokens in, 247 out · 3.5 s · $0.0016 · 1 message on Pro · answered by anthropic/claude-haiku-4.5 via Azure · September 28, 2026

10. GPT-6 Sol

    Passed: Stated all 3 facts with the section.

    Bramble and the Moonlight
    
    Bramble the hedgehog curled up in his little nest of leaves. He shut his eyes. Then he opened them again.
    
    “The moon is too bright,” he whispered.
    
    Silver light shone through the branches and right onto his nose. Bramble pulled a leaf over his face, but it slipped off. He tucked his head under a fern, but his feet stuck out.
    
    An owl in the tree above heard him rustling. “What are you looking for, Bramble?”
    
    “A darker place to sleep.”
    
    The owl spread one soft wing. “Try looking at the light instead.”
    
    Bramble peeked out. Moonlight made tiny stars on the dew. It lit a path to his nest, where his mother was waiting with an extra armful of leaves.
    
    Together they piled the leaves into a snug roof. A little moonlight still came through.
    
    “That bit can stay,” Bramble murmured. “It helps me see you.”
    
    Soon he was fast asleep.

    362 tokens in, 266 out (55 of them reasoning) · 4.1 s · $0.0017 · 1 message on Pro · answered by openai/gpt-6-sol via OpenAI · September 28, 2026

11. Kimi K3

    Passed: Stated all 3 facts with the section.

    Bramble and the Bright Moon
    
    Bramble the hedgehog snuggled into his leaf bed. But the moon was too bright, and he could not fall asleep.
    
    "Too bright, too bright," he grumbled.
    
    He pulled a leaf over his eyes. Still too bright. He rolled into a ball. Still too bright.
    
    Then Owl floated down. "Little Bramble, why are you awake?"
    
    "The moon keeps shining on me," Bramble said.
    
    Owl smiled. "Then let us walk in the moonlight together, just for a little while."
    
    So Bramble followed Owl through the soft silver grass. The moon glowed like a night-light, gentle and kind. Bramble's eyes grew heavy. His little feet grew slow.
    
    "Now I am sleepy," he yawned.
    
    Owl tucked him into his leaves. "The moon will watch over you."
    
    Bramble closed his eyes. The bright moon did not bother him anymore. It felt like a hug from the sky.
    
    "Good night, Moon," whispered Bramble. And he slept.

    448 tokens in, 261 out (30 of them reasoning) · 6.1 s · $0.0025 · 1 message on Pro · answered by moonshotai/kimi-k3 via Wafer · September 28, 2026

12. Mistral Large 4

    Passed: Stated all 3 facts with the section.

    Bramble and the Bright Moon
    
    Bramble the hedgehog sat up in his little leaf bed. The moon shone through the window, bright as a silver coin. "Too bright," he whispered. He pulled his blanket over his spines, but the light still peeked through.
    
    Bramble got up and padded to his window. "Moon, could you be softer?" he asked. The moon only glowed brighter.
    
    Then Bramble saw his friend Owl perched on the oak tree outside. "Hello," hooted Owl. "Can't sleep either?"
    
    Bramble nodded. "The moon is too bright."
    
    Owl fluttered down and draped his soft wing over the window like a curtain. "There," he said. "Now it's cozy."
    
    Bramble yawned. The room was dim and warm. He curled into his leaf bed. His eyes grew heavy.
    
    "Goodnight, Bramble," whispered Owl.
    
    "Goodnight," yawned Bramble. And he fell asleep.

    368 tokens in, 1,090 out (827 of them reasoning) · 9.0 s · $0.0025 · 1 message on Pro · answered by mistralai/mistral-large-4-0 via Mistral · October 9, 2026

13. Grok 4.7

    Passed: Stated all 3 facts with the section.

    The Moon Blanket
    Bramble the hedgehog curled up in his soft nest. The moon was too bright. It shone on his little nose and kept him awake.
    "Moon," he whispered, "please dim your light. I want to sleep."
    The moon did not answer. It only smiled, round and silver.
    Bramble tried counting leaves. He tried humming a tiny song. Still the light found him.
    Then a cloud drifted by, slow and gray. "May I help?" it asked.
    "Yes, please," said Bramble.
    The cloud floated in front of the moon like a soft blanket. The bright glow turned gentle and gray.
    Bramble's eyes grew heavy. "Thank you, cloud. Good night, moon."
    The moon peeked around the cloud and winked. Bramble smiled, tucked his paws in, and fell fast asleep.

    1,593 tokens in, 297 out (121 of them reasoning) · 5.5 s · $0.0032 · 1 message on Pro · answered by x-ai/grok-4.7 via xAI · October 2, 2026

14. DeepSeek V4 Pro

    Passed: Stated all 3 facts with the section.

    Bramble and the Too-Bright Moon
    
    Bramble the hedgehog snuggled in his leafy bed. But the moon shone right through his door. "Too bright!" he whispered. He pulled a big leaf over his eyes. The moonlight peeked around it.
    
    Bramble rolled into a prickly ball. The moonbeams tickled his nose. He unrolled and sighed. "I want to sleep."
    
    He crawled outside. The grass was silver. He looked up at the round, glowing moon. "Please, Moon," he said softly. "My eyes are sleepy."
    
    A little puff of wind blew. A soft gray cloud drifted across the sky. It covered the moon like a cozy blanket. The world turned dim and blue.
    
    Bramble smiled. He padded back to his bed, curled up, and closed his eyes. The moon slept behind the cloud, and Bramble slept too, warm and safe.

    363 tokens in, 826 out (639 of them reasoning) · 54.1 s · $0.0034 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer · October 8, 2026

15. Claude Sonnet 5

    Passed: Stated all 3 facts with the section.

    The Moon That Was Too Bright
    
    Bramble the hedgehog curled up in his cozy burrow, but he could not sleep. A big silver moon shone right through the leaves, and it tickled his eyes.
    
    "Too bright, too bright," Bramble sighed, tucking his nose under his paw. He tried closing his eyes tight. He tried turning around. Still, the moonlight peeked in.
    
    So Bramble tiptoed outside, his little feet soft on the grass. He looked up at the moon, round and glowing like a lamp in the sky.
    
    "Why are you so bright, Moon?" he whispered.
    
    The moon didn't answer, but a warm breeze rustled the leaves, and an owl hooted gently overhead, as if to say hello.
    
    Bramble smiled. He gathered soft leaves and made a cozy blanket over his eyes. Snuggled underneath, the light turned soft and golden.
    
    At last, Bramble's eyes grew heavy, and he drifted off to sleep, safe and warm beneath the gentle moon.

    479 tokens in, 361 out (18 of them reasoning) · 5.4 s · $0.0046 · 1 message on Pro · answered by anthropic/claude-sonnet-5 via Anthropic · September 28, 2026

16. Claude Sonnet 5.5

    Passed: Stated all 3 facts with the section.

    Bramble and the Bright Moon
    
    Bramble the hedgehog curled into a tight, prickly ball beneath the old oak tree. But he could not sleep. The moon was too bright.
    
    "Too shiny," he sighed, and he tried covering his eyes with a leaf.
    
    The wind blew the leaf away.
    
    So Bramble tiptoed to Owl, who sat on a low branch. "Owl, the moon is too bright. What can I do?"
    
    "Hoo," said Owl softly. "Look closely, little one."
    
    Bramble looked up. The moon was round and silver, and its light lay on the grass like a soft blanket. It shone on the sleeping flowers. It shone on the quiet pond.
    
    "It isn't shouting at me," Bramble whispered. "It's watching over us."
    
    "Yes," said Owl. "It keeps the night company."
    
    Bramble padded back to his nest and curled up once more. This time, the moon's glow felt warm and gentle, like a nightlight from a friend.
    
    His eyes grew heavy. His breathing slowed.
    
    "Goodnight, Moon," he yawned.
    
    And Bramble slept until morning.

    481 tokens in, 374 out · 4.0 s · $0.0047 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic · September 28, 2026

17. Gemini 3.1 Pro

    Passed: Stated all 3 facts with the section.

    The Sleepy Hedgehog and the Moon
    
    Bramble the hedgehog tossed and turned in his nest of dry leaves. He squeezed his little eyes shut, but it was no use. The moon was too bright. It shone like a giant silver lamp right into his bedroom.
    
    "I just want to sleep," Bramble whispered, covering his nose with a crunchy brown oak leaf. A soft breeze puffed the leaf right off his face.
    
    Just then, a gentle owl landed on the branch above. "Why are you awake, little Bramble?" asked the owl.
    
    "The moon is too bright," Bramble said with a big yawn.
    
    "I can help," the owl hummed. He flapped his wide wings and flew up, up, up into the night sky. With his soft feathers, he pushed a fluffy white cloud right in front of the silver moon.
    
    The forest turned dim and cozy.
    
    "Thank you," Bramble mumbled. He curled into a tight, warm ball and fell fast asleep.

    377 tokens in, 905 out (698 of them reasoning) · 8.4 s · $0.0058 · 1 message on Pro · answered by google/gemini-3.1-pro-preview via Google AI Studio · September 28, 2026

18. GPT-6 Astra

    Passed: Stated all 3 facts with the section.

    Bramble’s Little Curtain
    
    Bramble the hedgehog turned over in his bed of leaves.
    
    The moon shone through his window, bright and round.
    
    “Oh, Moon,” he whispered, “I can’t fall asleep. You are too bright.”
    
    He tucked his nose beneath a leaf. But his feet felt cold.
    
    He turned toward the wall. But a moonbeam tickled his ear.
    
    At last, Bramble sat up.
    
    “I need a little curtain.”
    
    Outside his door lay a wide, dry leaf. He carried it inside and hung it across the window with two small twigs.
    
    The moonlight grew soft and green.
    
    Bramble curled into his bed. Then he noticed a beetle by the door, trying to find its way home.
    
    “Wait,” said Bramble.
    
    He lifted one corner of his curtain. A thin silver path stretched across the floor.
    
    The beetle followed it outside.
    
    “Good night,” Bramble murmured.
    
    With the curtain tucked back in place, he closed his eyes and slept.

    362 tokens in, 214 out · 24.7 s · $0.0072 · 1 message on Pro · answered by openai/gpt-6-astra via OpenAI · September 28, 2026

19. Claude Opus 5.5

    Passed: Stated all 3 facts with the section.

    Bramble and the Bright Moon
    
    Bramble the hedgehog curled up in his bed of soft leaves. He shut his eyes tight. But the moon was big and round and very, very bright.
    
    "Moon," said Bramble, "you are shining right on my nose. I cannot sleep!"
    
    He rolled left. He rolled right. He pulled a leaf over his face, but the leaf slid off.
    
    So Bramble tiptoed out to find a darker spot. He peeked under a log. Too damp. He tried behind a stone. Too cold.
    
    Then he looked up. The moon was lighting the path for a little lost mouse, who scurried safely home.
    
    "Oh," whispered Bramble. "You're not keeping me awake. You're keeping everyone safe."
    
    Bramble walked back to his leafy bed. This time, the silver light felt like a warm night-light, just for him.
    
    "Goodnight, Moon," he yawned.
    
    And the moon kept watch while Bramble slept.

    481 tokens in, 375 out (57 of them reasoning) · 6.5 s · $0.0094 · 1 message on Pro · answered by anthropic/claude-opus-5.5 via Google · September 28, 2026

20. Claude Fable 5.1

    Passed: Stated all 3 facts with the section.

    Bramble and the Bright Moon
    
    Bramble the hedgehog curled up in her nest of dry leaves. She closed her eyes. She opened them again.
    
    The moon was shining right through the hedge, big and round and bright as a lantern.
    
    "Moon," said Bramble, "you are too bright. I cannot sleep."
    
    The moon just kept on glowing.
    
    Bramble pulled a leaf over her nose. Too crackly. She rolled over. Too bumpy. She tucked her head under her prickles. Too dark, and she still knew the moon was there.
    
    Then a small grey cloud came floating by.
    
    "Cloud," called Bramble, "could you stop for a moment?"
    
    The cloud drifted slowly in front of the moon, soft and thin, like a blanket over a nightlight.
    
    The garden turned gentle and silver.
    
    "Ah," said Bramble, and she yawned a tiny yawn.
    
    The cloud stayed. The moon glowed quietly behind it.
    
    And Bramble, warm in her leaves, fell fast asleep.

    481 tokens in, 340 out · 6.7 s · $0.0218 · 1 message on Pro · answered by anthropic/claude-fable-5.1 via Google · September 28, 2026

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