Run: 2026-07-09-01KX4131G85K2R1JYXN4T7YHVF

Run Details

Duration:
15.6s
Cost:
$0.014416
Provider:
OpenAI

Model input

System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<codex> <character id="4412" name="Aurora Carter" aliases="Rory, Laila, Aurora, Carter, Malphora" pronouns="she/her" species="Human" storyRole="Protagonist"> <eyeColor>bright blue</eyeColor> <hair>straight shoulder-length black</hair> <height>5'6"</height> <age>25</age> <scar>small crescent-shaped scar on her left wrist from a childhood accident</scar> <description>Aurora, referred to by her friends as Rory, is cool-headed, intelligent, and known for quick out-of-the-box thinking.</description> <backstory>Born in Cardiff to an Irish barrister father (Brendan Carter) and Welsh teacher mother (Jennifer Carter née Ellis), Rory reluctantly pursued Pre-Law at Cardiff University. She fled to London at the behest of her childhood friend Eva after leaving an abusive ex named Evan. By day, Rory works part-time as a delivery person for Yu-Fei Cheung's Golden Empress restaurant. She lives in a flat above Silas' bar.</backstory> </character> <location id="861" name="The Fae Grove" aliases="Isolde's grove, Richmond grove, the Grove" realm="Earth (Fae-touched)"> <parkLocation>Richmond Park</parkLocation> <standingStones>ancient oak standing stones mark the boundary</standingStones> <timeBehavior>time moves differently — an hour inside can be minutes or days outside</timeBehavior> <flora>wildflowers bloom year-round</flora> <description>A hidden clearing that exists in a pocket between Earth and the Fae realm.</description> </location> <item id="2001" name="Heartstone Pendant" aliases="the pendant, Heartstone" type="Artifact" origin="Dymas"> <gemstoneColor>deep crimson</gemstoneColor> <chainMaterial>silver chain</chainMaterial> <size>roughly the size of a thumbnail</size> <behavior>pulses faintly with warmth when near a Hel portal</behavior> <glow>faint inner glow</glow> <description>Given to Aurora by an unknown benefactor.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the horror genre. A character is alone in a strange, isolated place at night. They came here for a reason, but something feels off from the moment they arrive. The wrongness builds slowly — sounds that shouldn't be there, things that move at the edge of vision, a growing certainty that they are not alone. Build tension through restraint, not through gore. Use the codex entries above as your world reference for the character and setting. Only include the prose of the scene without any markdown or commentary.

Model response

AI
Aurora Carter knew Richmond Park well enough to dislike it at night. In daylight, the park was broad and familiar: deer cropping the grass beneath the trees, joggers threading the paths, children shouting near the ponds. After dark, its distances changed. The avenues of trees seemed to draw together, and the open fields became black water without a shore. She kept her phone’s torch angled low as she crossed the grass. The beam picked out flattened weeds, pale stones, the occasional glint of something wet. Beyond it, the park lay in layers of darkness. Her breath smoked faintly in the cold, though the evening had been mild when she left London. She pulled her coat tighter and touched the pendant beneath her shirt. The Heartstone was warm. Not warm from her skin. It had been cold when she put it on, a small hard weight against her sternum. Now heat seeped through the fabric and into her chest in slow pulses. Aurora stopped. The trees ahead stood in an uneven ring, their trunks silvered by the thin moon. Between them, she could see the first of the standing stones. She had come because of the pendant. That was all she had, and it was not much. An unknown benefactor had left it for her with no explanation beyond a name she had never heard before: Dymas. Since then, the stone had done nothing except glimmer faintly in the dark. Tonight, as she cut across the park, it had begun to pulse. It had led her here. She had told herself she was following a clue. Something rational. A transmitter, perhaps, or some trick of reflected light. She worked deliveries, not investigations, but she had learned that the world was full of mechanisms people mistook for mysteries. Pull the right thread and everything came apart into ordinary pieces. The Heartstone pulsed again. Aurora looked at the standing stones. They were older than the park, older than the city beyond it. Oak trees grew around them, their roots buckling the earth. The stones marked the boundary of the Grove, according to the notes she had found in Eva’s messages—a hidden clearing in some pocket between Earth and the Fae realm. The description had sounded like one of Eva’s elaborate jokes. Aurora had almost laughed when she first read it. She had stopped laughing when the pendant warmed. A twig cracked behind her. She turned fast, the torch swinging across the grass. Nothing. The beam returned a scatter of weeds and the long black bars of tree shadows. Somewhere far off, a deer gave a short, clicking call. Aurora waited for another sound. Only the wind moved, brushing through the branches with a dry, papery hiss. She lowered the torch. “Very funny,” she said. Her voice went no farther than the stones. The silence that followed felt deliberate. Aurora glanced at her phone. No signal. The battery, which had been at sixty-three percent when she left the flat, had dropped to thirty-one. She frowned at it, then slipped it back into her pocket. She did not like being here. That much was clear. The dislike had arrived before the fear, a cold instinctive recoil that tightened her shoulders and made every step feel borrowed. The place looked wrong even from the outside. The grass beneath the trees was green despite the season. Small flowers gleamed between the roots—blue, white, yellow, and red—opening in the dark as if night were their proper daylight. Year-round wildflowers, Eva had written. Aurora had assumed she meant that figuratively. She stepped between the first two stones. The cold vanished. Not faded. Vanished. One moment the air bit at her fingers; the next it pressed warm and damp against her face, carrying the scent of crushed leaves and something sweetly rotten. Her torch flickered. Behind her, the park remained visible through the gap: a strip of moonlit grass, the distant black shape of the city. It looked flat and insubstantial, like a photograph pinned to a wall. Aurora reached for the pendant. Its inner glow showed through her shirt, deep crimson and faint as a coal under ash. The clearing opened around her. It was larger than the ring of trees should have allowed. Wildflowers covered the ground in dense, impossible colour. Their stems brushed her knees. Beyond them stood ancient oaks with trunks broad enough to hide behind, their branches laced overhead so tightly that the moon appeared only in scattered fragments. No path led through the clearing. No buildings, no benches, no litter, no distant traffic. Richmond Park had fallen away. Aurora stood still and listened. At first she heard nothing. Then, beneath the insects and the faint stir of leaves, she heard a woman humming. The tune was simple. Four notes rising, two falling. A child’s song, perhaps, though she could not place it. Aurora held her breath. The humming stopped. “Eva?” she called. The name seemed to flatten against the trees. No answer. She hated herself for saying it. Eva was not here. Eva had never said she would be here. Her messages had become increasingly strange before they stopped altogether, but strange did not mean missing. It meant Eva being Eva: secretive, dramatic, impossible to pin down. Aurora drew out her phone and opened their conversation. The last message remained on the screen. Don’t come to the Grove after dark. She read it twice. Below it, her own reply sat unanswered. Then why did you tell me where it was? A petal touched the back of her hand. Aurora flinched and looked down. A white flower leaned toward her from its stem. Its petals were thin and almost translucent, veined with black. At its centre, something dark trembled. She moved away from it. The humming began again. This time it came from behind her. Aurora turned. The standing stones were gone. Not hidden. Gone. The gap between them had become a wall of tangled oak roots and shadow. There was no view of the park, no moonlit grass, no way to tell where she had entered. Her pulse kicked hard. She forced herself to breathe through her nose. Panic narrowed attention. Panic made people miss details. She needed details. The clearing was circular, perhaps. The trees formed a boundary. The flowers grew thickest toward the centre, where an old stone well or altar rose from the ground. She could see only its upper edge, dark and moss-covered. The humming came from somewhere near it. Aurora started walking. Each step made almost no sound. The flowers bent away from her boots, though no wind touched them. Their stems straightened once she passed. A few turned slowly, following her. She noticed that and kept going. At the edge of her vision, something moved between the trees. Aurora stopped. A pale vertical shape slid behind an oak trunk. She swung the torch toward it. The beam found bark, knots, and a smear of silver lichen. Nothing else. She waited. A small sound came from the flowers behind her. A soft, wet footfall. Aurora looked over her shoulder. The flowers stood undisturbed. Another footfall came from the left. Then another from the right. They were not approaching. They were circling her. She backed toward the stone structure in the centre. Her left wrist caught against a branch, and the small crescent scar there flashed pale in the torchlight. The old injury had been nothing—a childhood accident, a kitchen knife slipping when she was six—but tonight it looked like a deliberate mark. The pendant pulsed. The world answered. Somewhere beneath the soil, something gave a long, low groan. The flowers shivered. Every blossom in the clearing turned toward Aurora at once. She reached the stone well and pressed her back against it. The surface was warm. Not sun-warm, not body-warm. It had the clammy heat of breath. The humming stopped. A voice spoke from the trees. “Laila.” Aurora’s mouth went dry. No one called her that. Her mother had, when Aurora was very small and frightened of storms. It was a private name, a soft name, one that belonged to Cardiff kitchens and yellow lamplight. No one here should know it. She looked into the darkness. “Who are you?” The voice did not answer. A shape stood between the oaks. It was too tall to be a person and too narrow to be a tree. Its head tilted slightly, as if listening. Aurora could make out pale hands hanging at its sides. The fingers were long enough to reach its knees. She raised the torch. The beam failed before it reached the shape. The light thinned, dimmed, and turned red. The Heartstone burned against her chest. The figure took one step forward. Aurora’s hand closed around the pendant. Heat bit into her palm. Beneath her fingers, the gem pulsed with the steady rhythm of a second heart. “Stay back,” she said. The figure stopped. For a moment, she saw its face. Not clearly. Never clearly. The features seemed to shift whenever she tried to fix them: a woman’s cheekbones, a child’s mouth, the blank smoothness of an egg. Then the darkness folded over it again. Behind Aurora, inside the stone well, something tapped. Once. Twice. She twisted to look. The well was not a well. It was an opening in the ground, rimmed by ancient stone. A red light glowed far below, answering the pendant’s pulse. The air rising from it smelled of iron and wet earth. A Hel portal. The thought arrived whole, certain, and utterly unwelcome. The tapping came again. This time from beneath her hand. Aurora jerked away from the stone. The figure in the trees spoke in her mother’s voice. “Come closer.” Every instinct she possessed told her to run. But the trees had closed behind her, the path was gone, and the thing in the clearing had known her name. Fear clawed at her ribs, yet beneath it another thought remained cold and sharp. It wanted her near the portal. That meant the portal was not merely an exit. Aurora looked at the flowers, at the dark opening, at the tall shape waiting patiently beyond the trees. The pendant’s warmth climbed into her throat. Then she smiled, though her face felt numb. “Fine,” she whispered. She stepped toward the portal. The figure leaned forward. Aurora threw the pendant into the opening instead.
created_at"2026-07-09T18:08:55.824Z" 7/9/2026, 6:08:55 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1921
moderation_latency(null)
generation_time15180
tokens_prompt812
tokens_completion2752
native_tokens_prompt742
native_tokens_completion2279
native_tokens_completion_images0
native_tokens_reasoning105
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.014416
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0015553bdc42f183016a4fe3b7ef8c81959c0e33e54682a4ea"
is_byokfalse
latency290
model_permaslug"openai/gpt-5.6-luna-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620535-pYdrnh7zx8lcAC5tXe3N"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620535-goBoDlT0Jo4kKDC4Fm2e"
upstream_id"resp_0015553bdc42f183016a4fe3b7ef8c81959c0e33e54682a4ea"
total_cost0.014416
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags4
adverbTagCount0
adverbTags(empty)
dialogueSentences7
tagDensity0.571
leniency1
rawRatio0
effectiveRatio0
79.80% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1733
totalAiIsmAdverbs7
found
0
adverb"very"
count2
1
adverb"sweetly"
count1
2
adverb"tightly"
count1
3
adverb"slowly"
count1
4
adverb"slightly"
count1
5
adverb"utterly"
count1
highlights
0"very"
1"sweetly"
2"tightly"
3"slowly"
4"slightly"
5"utterly"
100.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
53.84% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1733
totalAiIsms16
found
0
word"familiar"
count1
1
word"glint"
count1
2
word"weight"
count1
3
word"pulse"
count3
4
word"pulsed"
count3
5
word"silence"
count1
6
word"flickered"
count1
7
word"trembled"
count1
8
word"footfall"
count2
9
word"structure"
count1
10
word"warmth"
count1
highlights
0"familiar"
1"glint"
2"weight"
3"pulse"
4"pulsed"
5"silence"
6"flickered"
7"trembled"
8"footfall"
9"structure"
10"warmth"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences210
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount4
narrationSentences210
filterMatches
0"feel"
hedgeMatches
0"seemed to"
1"tried to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences213
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen30
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1728
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions5
unquotedAttributions0
matches(empty)
77.16% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions48
wordCount1716
uniqueNames13
maxNameDensity1.46
worstName"Aurora"
maxWindowNameDensity2.5
worstWindowName"Aurora"
discoveredNames
Carter1
Richmond2
Park2
London1
Heartstone3
Dymas1
Grove2
Eva7
Earth1
Fae1
Aurora25
Cardiff1
Hel1
persons
0"Carter"
1"Heartstone"
2"Eva"
3"Aurora"
places
0"Richmond"
1"Park"
2"London"
3"Cardiff"
globalScore0.772
windowScore0.833
91.86% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences129
glossingSentenceCount3
matches
0"sounded like one of Eva’s elaborate jokes"
1"looked like a deliberate mark"
2"as if listening"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.579
wordCount1728
matches
0"not investigations, but she had learned"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences213
matches
0"learned that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs129
mean13.4
std15.05
cv1.124
sampleLengths
012
147
212
352
44
534
62
726
87
955
105
1151
124
136
1470
158
165
179
181
1930
2013
214
224
238
246
2535
2669
275
287
297
303
3134
3233
335
3416
355
3650
3720
385
395
4015
4119
424
433
443
458
462
4745
4816
497
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences210
matches
0"were gone"
1"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs296
matches
0"was following"
1"were not approaching"
2"were circling"
89.20% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount5
semicolonCount1
flaggedSentences4
totalSentences213
ratio0.019
matches
0"The stones marked the boundary of the Grove, according to the notes she had found in Eva’s messages—a hidden clearing in some pocket between Earth and the Fae realm."
1"Small flowers gleamed between the roots—blue, white, yellow, and red—opening in the dark as if night were their proper daylight."
2"One moment the air bit at her fingers; the next it pressed warm and damp against her face, carrying the scent of crushed leaves and something sweetly rotten."
3"The old injury had been nothing—a childhood accident, a kitchen knife slipping when she was six—but tonight it looked like a deliberate mark."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1727
adjectiveStacks0
stackExamples(empty)
adverbCount65
adverbRatio0.03763752171395483
lyAdverbCount17
lyAdverbRatio0.009843659525188187
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences213
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences213
mean8.11
std5.43
cv0.67
sampleLengths
012
124
25
318
412
514
69
717
812
94
105
1116
1213
132
1415
1511
167
1710
1820
1913
2012
215
229
232
249
2520
2611
274
286
2912
3010
3129
3210
339
348
355
369
371
3815
3910
405
4113
424
434
448
456
465
472
4817
4911
42.02% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats17
diversityRatio0.28169014084507044
totalSentences213
uniqueOpeners60
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount8
totalSentences189
matches
0"Somewhere far off, a deer"
1"Only the wind moved, brushing"
2"Then, beneath the insects and"
3"Then why did you tell"
4"Then another from the right."
5"Somewhere beneath the soil, something"
6"Then the darkness folded over"
7"Then she smiled, though her"
ratio0.042
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount50
totalSentences189
matches
0"She kept her phone’s torch"
1"Her breath smoked faintly in"
2"She pulled her coat tighter"
3"It had been cold when"
4"She had come because of"
5"It had led her here."
6"She had told herself she"
7"She worked deliveries, not investigations,"
8"They were older than the"
9"She had stopped laughing when"
10"She turned fast, the torch"
11"She lowered the torch."
12"Her voice went no farther"
13"She frowned at it, then"
14"She did not like being"
15"She stepped between the first"
16"Her torch flickered."
17"It looked flat and insubstantial,"
18"Its inner glow showed through"
19"It was larger than the"
ratio0.265
57.88% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount152
totalSentences189
matches
0"Aurora Carter knew Richmond Park"
1"The avenues of trees seemed"
2"She kept her phone’s torch"
3"The beam picked out flattened"
4"Her breath smoked faintly in"
5"She pulled her coat tighter"
6"The Heartstone was warm."
7"It had been cold when"
8"The trees ahead stood in"
9"She had come because of"
10"That was all she had,"
11"An unknown benefactor had left"
12"Tonight, as she cut across"
13"It had led her here."
14"She had told herself she"
15"A transmitter, perhaps, or some"
16"She worked deliveries, not investigations,"
17"The Heartstone pulsed again."
18"Aurora looked at the standing"
19"They were older than the"
ratio0.804
26.46% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences189
matches
0"Now heat seeped through the"
ratio0.005
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences65
technicalSentenceCount3
matches
0"The battery, which had been at sixty-three percent when she left the flat, had dropped to thirty-one."
1"The dislike had arrived before the fear, a cold instinctive recoil that tightened her shoulders and made every step feel borrowed."
2"Small flowers gleamed between the roots—blue, white, yellow, and red—opening in the dark as if night were their proper daylight."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags4
uselessAdditionCount0
matches(empty)
25.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount1
fancyTags
0"she whispered (whisper)"
dialogueSentences7
tagDensity0.571
leniency1
rawRatio0.25
effectiveRatio0.25
88.1072%