Run: 2026-09-23-01M36R0WZWBYQ8S4S7VFJ1XW7D

Run Details

Duration:
33.0s
Cost:
$0.001373
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
The first wrong thing was the gate. Aurora had passed through it a hundred times, though never at this hour. By daylight, Richmond Park’s gates were ordinary iron, blunt-tipped and black against the grass. Now the bars seemed too thin, their shadows too long. The padlock hung open. She was certain it had been closed when she came up the path. She stopped beneath the sign and listened. London made its usual distant murmur beyond the park: traffic, a siren far off, the soft electrical hiss of the city. Inside the park, the night was still. No wind stirred the bare branches overhead. Her trainers scuffed the gravel when she shifted her weight, loud enough to sound like someone else moving behind her. Aurora looked back. The path lay empty to the gate. Beyond it, the road reflected a wash of streetlamp gold. She could turn around. She had come here because the pendant had been warm against her skin all evening, then hot enough to make her pull it from beneath her shirt. Its little crimson stone had glimmered once in the kitchen light, a faint red pulse like a heartbeat seen through closed eyelids. She had thought of the strange things she’d been trying not to think about, and of the way the warmth had grown stronger when she faced east. So she’d come to Richmond Park. Alone, because she hadn’t wanted to explain the pendant to anyone. Alone, because she’d told herself that a walk through a park was not the same as believing in anything. She touched the stone through her coat. It had cooled. “Fine,” she said under her breath. “I’ve checked.” The words didn’t travel. They seemed to stop a foot from her mouth. She went on. She kept to the main path at first, using the dark shapes of the trees as landmarks. The park was familiar enough in daylight to make the night feel like a trick of perspective. A bench emerged from the dark where she expected it. The path dipped where she remembered. But the distances were wrong. The next lamppost, which should have been visible through the trees, never appeared. She checked her phone. No signal. The time read 11:47. She had left home less than twenty minutes ago. That was what the clock said. The pendant warmed again. Aurora stopped. The warmth was gentle, almost apologetic, at first. Then it began to pulse against her chest. She drew the chain out from her collar. In the dark, the stone gave off a faint inner glow. It looked smaller than she remembered, no bigger than her thumbnail, but the red light inside it seemed to deepen as she watched. A sound came from somewhere ahead. Not a footstep. A low, hollow knock. Aurora let the pendant fall back under her shirt. The knock came again, spaced evenly from the first. She followed it. The path narrowed between a stand of trees. She was aware of the dark on either side without letting herself look directly into it. There was no reason to rush. There was no reason to run. A branch creaked above her, though the air remained still. Then something crossed the path ahead. It was only a flicker at the edge of her vision, low and quick. Aurora turned her head sharply. Nothing there but the trees, their trunks pale in the thin wash of moonlight. She waited. When nothing moved again, she walked on, counting her steps. At fifty, the path should have reached the rise where the ground opened toward the wide grass. At seventy, she passed a tree with a split trunk. At ninety, she passed the same tree again. Aurora stopped. A damp leaf clung to the left sole of her trainer. She scraped it off against the path and stared at the split trunk. The pale scar in its bark made a shape like a crooked mouth. She turned around and walked in the opposite direction. At the next fork, she chose the wider path. The pendant beat steadily against her sternum, warm as a small animal. The dark between the trees looked deeper now, filled rather than empty. She forced herself to focus on practical things: the slope of the ground, the grainy crunch under her shoes, the cold air drying her lips. Her left wrist prickled beneath her sleeve where the childhood scar curved across the skin. Somewhere behind her, a child laughed. Aurora stopped so abruptly that the pendant swung and tapped her breastbone. The laugh came again, softer. A little girl, delighted by something. The sound carried from the trees to her right. She stood very still. There were no children in the park at nearly midnight. There should have been no children within hearing distance at all. “Hello?” she called. Her voice came back from the trees, but wrong. Not an echo. The word returned in her own tone, close and clear, with a slight upward lilt she did not use. Hello? Her skin tightened along her arms. Aurora backed up two steps. Her hand found the phone in her pocket, though it had no signal and no useful light left. She pressed the side button. The screen flashed awake, showing 11:47. The time had not changed. A scatter of pale flowers bordered the path. She would have sworn there had been none a moment ago. They crowded the grass in small star-shaped blooms, their petals open to the night. She crouched without meaning to. They had a faint, clean scent, like rain on stone. Wildflowers bloomed year-round in the grove, some half-buried memory offered up by a conversation she couldn’t place. She straightened at once. The path ended in a clearing. Ancient oak standing stones ringed it, each thick with moss, their black shapes set upright in the earth. They were not arranged in a perfect circle. One leaned at a tired angle. Another had split down the middle, and the halves stood a few inches apart. Beyond them, the oaks closed in, their branches braided overhead so tightly that the sky showed through only in scraps. The air inside the ring felt warmer. Aurora stepped between two stones. The pendant flared against her skin, not bright enough to light the clearing, but bright enough to paint the inside of her coat red. She caught the chain and pulled it out. The stone was hot now, hot enough that she had to cradle it in her palm. A faint glow pulsed in its depths. At the far side of the clearing, someone stood among the flowers. Aurora’s breath caught. The figure was roughly her height, its face lost in shadow. She could make out the pale shape of a coat, the line of one shoulder. It stood between two trees, perfectly still. “Who are you?” she asked. The figure didn’t move. She tried to decide what she could see, not what she feared she could see. A branch. A stump. A trick of distance. She shifted half a step to the left. The figure shifted too. Aurora’s fingers closed around the stone. Its heat pressed into her palm. “Right,” she whispered, mostly to herself. “That’s not a branch.” She turned toward the stones she had entered through. Beyond them, the path was gone. There was only dark grass and the rigid line of trees. A sound came from behind her—three gentle knocks. Aurora spun around. The figure had not crossed the clearing. It remained among the flowers, head tilted now, as if listening. The knocks came again from inside the nearest standing stone. Her sensible mind reached for explanations and found them scattered: hollow rock, a bird, a fox nosing through the undergrowth. The explanations would not hold. The sound had come from the stone. She had heard it with the certainty of hearing her own name. The pendant burned hotter. The figure took a step toward her. Aurora backed into the ring. One of the flowers brushed her ankle. The petals were cold and wet, though the night had been dry. Another step from the figure. Its face remained obscured. “Stop.” It stopped. For a moment, the clearing was silent again. Then, from close behind Aurora’s left shoulder, her own voice said, “Hello?” She didn’t turn. Every muscle in her body locked. The voice had been soft and intimate, the way she might speak to herself in a mirror when no one else was home. It came from the space between her and the stone. Aurora’s grip tightened around the pendant. The small crescent scar on her wrist pressed against the chain. She looked down and found that the red light had spread across her fingers. She could run. She could choose a gap between the stones and keep going until the trees thinned. She could do anything except stand there waiting for the voice to speak again. The thought came cleanly, and with it a colder one: she had no idea how long she’d been in the park. Her phone still read 11:47. A knock sounded from the stone at her back. This time it answered itself. A knock from the stone at her left. Then one from the stone at her right. The figure in the flowers lowered its head. Aurora moved. She bolted for the widest gap in the ring, not the one she’d entered through. The pendant jerked against its chain and thumped her chest. Behind her, the knocks sped up, hopping from stone to stone. Something rustled through the flowers at her heels, matching her pace. The trees parted. She shoved through the gap and stumbled onto gravel. Her hands struck the ground. She scrambled upright and kept running, lungs tearing, shoes slipping on the path. She did not look behind her. A lamppost appeared ahead, its bulb glowing weakly through the branches. Then another. The city’s far-off murmur returned, layered with a bus grinding through gears and the distant rush of tires on wet pavement. She reached the park gate, bent double, and sucked cold air into her lungs. The padlock hung closed. Aurora took out her phone. The screen showed 2:16. Her knees went loose. The pendant had cooled against her skin. In the lamp glow, it looked like a little dark stone on a silver chain, harmless and dull. She slipped it beneath her shirt with shaking fingers and hurried toward the road. At the gate, she glanced back once. The park lay empty. Beyond the bars, the path stretched into darkness between the trees. Somewhere far inside it, a child laughed.
created_at"2026-09-23T09:02:22.726Z" 9/23/2026, 9:02:22 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6566
moderation_latency(null)
generation_time32965
tokens_prompt792
tokens_completion2566
native_tokens_prompt742
native_tokens_completion2598
native_tokens_completion_images0
native_tokens_reasoning423
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"
usage0.0013732
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790154142-Y4USSlduarQ6zqyux5N3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790154142-A8g67GBnMrinTQNsJHwf"
upstream_id"resp_0d8328b1c0917845016ab3959ed3f887d1ac6d1aefb7dac923"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0d8328b1c0917845016ab3959ed3f887d1ac6d1aefb7dac923"
is_byokfalse
latency672
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0013732
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags5
adverbTagCount0
adverbTags(empty)
dialogueSentences8
tagDensity0.625
leniency1
rawRatio0
effectiveRatio0
88.67% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1766
totalAiIsmAdverbs4
found
0
adverb"sharply"
count1
1
adverb"very"
count1
2
adverb"tightly"
count1
3
adverb"perfectly"
count1
highlights
0"sharply"
1"very"
2"tightly"
3"perfectly"
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)
66.02% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1766
totalAiIsms12
found
0
word"weight"
count1
1
word"pulse"
count2
2
word"warmth"
count2
3
word"familiar"
count1
4
word"flicker"
count1
5
word"echo"
count1
6
word"lilt"
count1
7
word"perfect"
count1
8
word"pulsed"
count1
9
word"depths"
count1
highlights
0"weight"
1"pulse"
2"warmth"
3"familiar"
4"flicker"
5"echo"
6"lilt"
7"perfect"
8"pulsed"
9"depths"
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
narrationSentences193
matches(empty)
91.04% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount5
narrationSentences193
filterMatches
0"feel"
1"look"
hedgeMatches
0"seemed to"
1"began to"
2"tried to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences196
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen27
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1765
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions7
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions21
wordCount1751
uniqueNames3
maxNameDensity0.97
worstName"Aurora"
maxWindowNameDensity2
worstWindowName"Aurora"
discoveredNames
Richmond2
Park2
Aurora17
persons
0"Aurora"
places
0"Richmond"
1"Park"
globalScore1
windowScore1
94.44% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences135
glossingSentenceCount3
matches
0"as if listening"
1"appeared ahead its bulb glowing weakly through the branches"
2"looked like a little dark stone on a silv"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.567
wordCount1765
matches
0"not bright enough to light the clearing, but bright enough to paint the inside of her coat red"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences196
matches
0"found that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs89
mean19.83
std19.73
cv0.995
sampleLengths
07
154
27
355
43
597
636
710
88
913
103
1178
1215
134
1418
1542
1613
179
189
193
2046
216
2233
232
2445
252
2637
279
2873
296
3012
3120
3225
333
3431
351
366
3734
385
3948
4021
416
4266
437
445
4548
467
4712
4836
495
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences193
matches
0"been closed"
1"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs289
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount1
semicolonCount0
flaggedSentences1
totalSentences196
ratio0.005
matches
0"A sound came from behind her—three gentle knocks."
94.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1757
adjectiveStacks1
stackExamples
0"small star-shaped blooms,"
adverbCount63
adverbRatio0.035856573705179286
lyAdverbCount15
lyAdverbRatio0.008537279453614115
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences196
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences196
mean9.01
std5.51
cv0.612
sampleLengths
07
113
214
310
44
513
67
721
87
97
1020
113
127
1310
144
1527
1622
1727
186
1911
2019
217
223
236
242
254
269
273
2817
2917
3010
316
325
3313
344
352
364
379
386
394
402
418
428
438
4411
4523
466
473
484
499
40.82% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats18
diversityRatio0.20918367346938777
totalSentences196
uniqueOpeners41
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount6
totalSentences181
matches
0"Then it began to pulse"
1"Then something crossed the path"
2"Somewhere behind her, a child"
3"Then, from close behind Aurora’s"
4"Then one from the stone"
5"Somewhere far inside it, a"
ratio0.033
82.98% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount62
totalSentences181
matches
0"She was certain it had"
1"She stopped beneath the sign"
2"Her trainers scuffed the gravel"
3"She could turn around."
4"She had come here because"
5"Its little crimson stone had"
6"She had thought of the"
7"She touched the stone through"
8"It had cooled."
9"she said under her breath"
10"They seemed to stop a"
11"She went on."
12"She kept to the main"
13"She checked her phone."
14"She had left home less"
15"She drew the chain out"
16"It looked smaller than she"
17"She followed it."
18"She was aware of the"
19"It was only a flicker"
ratio0.343
64.97% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount143
totalSentences181
matches
0"The first wrong thing was"
1"Aurora had passed through it"
2"The padlock hung open."
3"She was certain it had"
4"She stopped beneath the sign"
5"London made its usual distant"
6"Her trainers scuffed the gravel"
7"Aurora looked back."
8"The path lay empty to"
9"She could turn around."
10"She had come here because"
11"Its little crimson stone had"
12"She had thought of the"
13"She touched the stone through"
14"It had cooled."
15"she said under her breath"
16"The words didn’t travel."
17"They seemed to stop a"
18"She went on."
19"She kept to the main"
ratio0.79
27.62% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences181
matches
0"Now the bars seemed too"
ratio0.006
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences74
technicalSentenceCount0
matches(empty)
25.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags5
uselessAdditionCount1
matches
0"she whispered, mostly to herself"
25.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount1
fancyTags
0"she whispered (whisper)"
dialogueSentences8
tagDensity0.5
leniency1
rawRatio0.25
effectiveRatio0.25
86.6861%