Run: 2026-09-23-01M36NZ6VYPTQFHB6DC8TZ6VP2

Run Details

Duration:
30.7s
Cost:
$0.001240
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="4416" name="Detective Harlow Quinn" aliases="Quinn, Detective Quinn, Harlow" pronouns="she/her" species="Human" storyRole="Antagonist"> <eyeColor>brown</eyeColor> <hair>closely cropped salt-and-pepper</hair> <height>5'9"</height> <age>41</age> <jawline>sharp jaw</jawline> <watch>worn leather watch on her left wrist</watch> <bearing>military precision</bearing> <description>A Metropolitan Police detective with 18 years of decorated service who suspects the clique is involved in criminal activity.</description> <backstory>She lost her partner, DS Morris, during a case three years ago under unexplained circumstances that had supernatural origins she doesn't yet understand.</backstory> </character> <character id="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <location id="856" name="The Veil Market" aliases="Veil Market, the Market, underground market" realm="Earth"> <currentLocation>abandoned Tube station beneath Camden</currentLocation> <entryRequirement>bone token</entryRequirement> <schedule>moves locations every full moon</schedule> <description>A hidden supernatural black market that sells enchanted goods, banned alchemical substances, and information.</description> </location> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. Use the codex entries above as your world reference for characters and setting. Only include the prose of the scene without any markdown or commentary.

Model response

AI
Rain drove through Soho in hard, slanting sheets. It silvered the pavement, blurred the traffic lights and turned every doorway into a black mouth. Detective Harlow Quinn kept the suspect in sight. He was fast, but he ran badly—one shoulder higher than the other, his right foot skidding whenever he cut across the slick pavement. She had seen him before in the photographs: a narrow face, a shaved scalp, a thin scar over one eyebrow. Owen Vale, if the name on the warrant was worth anything. A runner for people who sold things no one admitted existed. “Metropolitan Police!” Quinn shouted. Vale glanced back. His eyes caught the green wash of the Raven’s Nest sign behind her, then flicked away. He turned down an alley between a closed tailor’s shop and a restaurant with its chairs stacked upside down in the window. Quinn followed. Her boots struck standing water. A bin toppled as Vale shouldered past it, clanging against the brick. Quinn skidded around the obstacle, one hand brushing the wall to keep her balance. The rain had found the gap between her collar and her neck. It ran cold beneath her shirt, but she didn’t slow. At the alley’s far end, Vale burst onto a wider street and cut between two idling taxis. A horn blared. He vaulted the low rail at a construction site and landed in a puddle on the other side. Quinn went over the rail after him. The landing jolted her knees. Her worn leather watch knocked against her wrist bone. She glanced at it out of habit—no use, no time to lose—and kept moving. Vale ran along the fenced edge of the site, then ducked through a break in the hoarding. The gap led to a service lane beneath the railway arches. The city changed there. The bright shopfronts and wet buses vanished behind brick and iron. Water drummed on the arches overhead. Somewhere in the dark, a train groaned past, shaking grit from the ceiling. Quinn drew her weapon. “Stop! Hands where I can see them!” Vale’s silhouette jumped in the light of a single orange security lamp. He didn’t stop. He reached the far end of the lane and shouldered open a steel door marked STAFF ONLY. The door swung back. Beyond it, a narrow flight of steps descended into the earth. Quinn reached the threshold as Vale disappeared below. She smelled damp concrete, rust, and something sharp and medicinal, like crushed herbs. A strip of white light burned at the foot of the stairs. She listened. Footsteps ran downward. Then a door slammed. The entrance stood open, shivering in the rain. Quinn checked behind her. The service lane lay empty. No backup unit. No uniform close enough to call in without giving Vale another thirty seconds. She put a hand to her earpiece. “Control, Quinn. Pursuit has gone below street level, access at—” Static cracked in her ear. She repeated the location. The reply broke apart into a string of clipped syllables and died. She stared at the open stairwell. Three years ago, Morris had gone underground too. Not into a station or a basement, but into a place the official reports had never managed to name. The last thing Quinn had heard from him was a burst of breath over the radio and a sound like someone dragging a chain over stone. Then nothing. The search team found his car, his coat, and a clean patch of floor where the rain should have left mud. She had learned to distrust holes in the world. A shadow moved below. Quinn stepped through the doorway. The steel door swung shut behind her with a heavy clang. The sound followed her down the first steps, then broke against the tiled walls. She kept her weapon low, her left palm skimming the rail. The stairs turned twice and ended at a landing where an old Underground roundel had been painted over with a black square. Someone had scratched a symbol into the paint. A circle crossed by three short lines. On the floor lay a small object shaped like a knucklebone, pale and smooth. Quinn crouched without touching it. A token, perhaps. An entry marker. She photographed it with her phone, though the flash barely reached the walls. The stairwell continued. Below, voices mingled in a hollow, crowded murmur. It wasn’t the muffled hum of a station. It had too many textures: laughter, bargaining, a child crying, the occasional metallic chime. Quinn holstered her weapon but kept her hand on the grip. A gun would make the wrong kind of entrance. She didn’t know what kind of entrance she was making. The next door had no handle. A hand-sized plate was set into the wall beside it, polished by use. Quinn tried the edge. Locked. A shuffling sound came from above. She turned, weapon clear of its holster. A man in a soaked brown coat stood on the landing, breathing through his mouth. He held his hands at chest height. A thin gold chain disappeared under his shirt. “Detective,” he said. She knew him. Tomás Herrera, former paramedic, now an unlicensed doctor for people who preferred their injuries unrecorded. The file said he worked out of the Raven’s Nest when someone needed a stitch and no questions. His warm brown eyes moved from her face to her gun. “Where is Vale?” “Which one?” “Don’t.” “I’m not trying to be difficult. People use that name down here.” “Then tell me which direction he went.” Tomás’s gaze shifted to the pale object on the floor. His expression tightened. “You shouldn’t have come without a token.” “Convenient advice.” “It wasn’t advice.” He stepped down one stair. Quinn raised her gun. “Stop.” He stopped. Rain ran off his curls and down his temples. His left forearm was bare beneath his rolled sleeve, a long scar cutting pale through olive skin. At his throat, the Saint Christopher medallion caught the strip light. “Is this a Tube station?” Quinn asked. “It used to be.” “Which one?” “Not the question that matters.” The locked door gave a low click. Tomás looked at it sharply. Quinn saw his hand twitch toward the medallion. “What’s on the other side?” “The Market.” “The Veil Market?” He said nothing. Quinn had heard the name in reports that evaporated before she could subpoena them. A hidden market that moved location every full moon. Enchanted goods, banned alchemical substances, information. Rumor dressed as evidence. She had expected to find one of two things when she started chasing Vale: a frightened man with a bag of stolen drugs, or a network selling something worse. She had not expected a door that recognized a bone. “Vale went in,” she said. “Probably.” “You’re going in after him?” “No.” “Then move aside.” “Detective, you have no token.” “I have a warrant.” “That’ll impress the door.” The plate beside it had begun to sweat. Not water. A clear liquid gathered on its polished face and slid down in thin lines. Quinn eased her weight back. From beyond the door came a scrape, then a muffled shout. Vale’s voice. Quinn couldn’t make out the words, but she knew the note of panic. She looked at the door, then at Tomás. “Do you know what he’s carrying?” “I know what he wants.” “And what’s that?” “Protection.” “From whom?” Tomás’s mouth pressed into a line. “People who don’t care about warrants.” Quinn hated the answer because it sounded honest. Her radio hissed. A voice surfaced through the static—Control, distant and thin—then dissolved into an electronic whine. The second she turned the volume up, the sound sharpened until pain flashed behind her eyes. She shut it off. Tomás watched her. “It won’t work.” “Then you’ll tell Control what happened.” “Will I?” “If you want your name out of my notebook.” “That’s not much of a threat.” “It’s what I have.” The shout beyond the door came again. Louder now, or closer. A heavy impact rattled the metal. The plate flashed with a dull, red glow. Quinn drew her weapon and pointed it at the lock. If Vale was in danger, she could not stand on a stair and debate definitions. If the door opened onto a crowded market, a gun could turn a chase into a massacre. If the stories were true, she might not even understand what she was shooting at. She lowered the muzzle. The decision settled in her chest, cold and simple. She would go in. Not because she believed the rumors. Because a suspect had crossed a threshold, and a man on the other side had shouted for help. She could not pretend she hadn’t heard him. “Tell me how to get through.” Tomás looked at her as though weighing a risk he had already taken too many times. Then he pulled a small object from his coat pocket. It was a knucklebone, darkened at one end, threaded on a piece of red string. “You carry that,” he said. “You don’t touch anything unless you know what it is. Don’t give your name. Don’t eat or drink. And if anyone asks what you’re looking for—” “I’ll say I’m looking for Vale.” “No.” Tomás thrust the token into her hand. “You say nothing.” The bone was warm. The door unlocked. It opened onto a platform crowded with stalls. Quinn stopped at the threshold. A gust of hot, stale air rolled over her, carrying candle smoke, wet wool, citrus, and the copper tang of blood. Beyond the door stretched an abandoned Underground station, its tiled walls patched with posters and painted symbols. Lamps hung from wires above a maze of tables. Sellers leaned over their goods: glass vials in nests of straw, old books chained shut, silver rings that twitched against the wood. A woman in a red veil weighed blue powder on a brass scale. Near her, a man with a face covered in tiny white scars offered something alive in a jar. No one looked surprised to see Quinn. That was worse than surprise. Vale was visible across the platform, half swallowed by the crowd. He shoved between two stalls, clutching a canvas bag to his ribs. A tall figure in a waxed coat followed him at a walk, unhurried, one hand hidden in its pocket. Quinn stepped through the door. Tomás came after her. The market noise shifted around them, not stopping but bending, as if the crowd had drawn a breath. The bone token pressed a little deeper into Quinn’s palm. She closed her fingers around it and felt its warmth pulse once against her skin. Vale glanced back. He saw her and broke into a run. Quinn followed him between the stalls, eyes fixed on his shoulders, the twitch of his right foot. Ahead, the tall figure in the waxed coat turned its head. Beneath the hood, its face was pale and featureless as wet clay. The door behind them slammed shut. Quinn kept running.
created_at"2026-09-23T08:26:30.149Z" 9/23/2026, 8:26:30 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1832
moderation_latency(null)
generation_time30653
tokens_prompt888
tokens_completion2765
native_tokens_prompt810
native_tokens_completion2318
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.00124
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151990-rGrihZPJ1drU9KWeFZVT"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151990-MylDFDVGrvI8LeqquaBk"
upstream_id"resp_07adf89e63eec464016ab38d363cb087d187d56c7f39ae715c"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_07adf89e63eec464016ab38d363cb087d187d56c7f39ae715c"
is_byokfalse
latency759
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.00124
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
totalTags6
adverbTagCount0
adverbTags(empty)
dialogueSentences46
tagDensity0.13
leniency0.261
rawRatio0
effectiveRatio0
97.27% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1831
totalAiIsmAdverbs1
found
0
adverb"sharply"
count1
highlights
0"sharply"
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)
80.88% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1831
totalAiIsms7
found
0
word"eyebrow"
count1
1
word"flicked"
count1
2
word"footsteps"
count1
3
word"the last thing"
count1
4
word"weight"
count1
5
word"warmth"
count1
6
word"pulse"
count1
highlights
0"eyebrow"
1"flicked"
2"footsteps"
3"the last thing"
4"weight"
5"warmth"
6"pulse"
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
emotionTells1
narrationSentences173
matches
0"looked surprised"
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences173
filterMatches
0"watch"
hedgeMatches
0"managed 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
maxSentenceWordsSeen29
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1826
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
66.56% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions62
wordCount1618
uniqueNames13
maxNameDensity1.67
worstName"Quinn"
maxWindowNameDensity3
worstWindowName"Quinn"
discoveredNames
Soho1
Harlow1
Quinn27
Vale13
Raven2
Nest2
Morris1
Underground2
Herrera1
Saint1
Christopher1
Tomás9
Control1
persons
0"Harlow"
1"Quinn"
2"Vale"
3"Raven"
4"Morris"
5"Herrera"
6"Saint"
7"Christopher"
8"Tomás"
places
0"Soho"
globalScore0.666
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences117
glossingSentenceCount1
matches
0"as though weighing a risk he had already taken too many times"
90.47% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.095
wordCount1826
matches
0"Not into a station or a basement, but into a place the official reports had never managed to name"
1"not stopping but bending, as if the crowd had drawn a breath"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences213
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs108
mean16.91
std20.17
cv1.193
sampleLengths
024
18
265
34
441
52
653
738
87
928
1062
114
127
1332
144
1511
1633
172
187
198
2032
2110
2221
236
2476
259
264
275
2858
2915
3038
313
3260
3324
346
3537
363
3747
383
392
401
4112
427
4313
447
452
463
479
481
4939
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences173
matches
0"been painted"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs271
matches
0"was making"
1"was shooting"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount5
semicolonCount0
flaggedSentences3
totalSentences213
ratio0.014
matches
0"He was fast, but he ran badly—one shoulder higher than the other, his right foot skidding whenever he cut across the slick pavement."
1"She glanced at it out of habit—no use, no time to lose—and kept moving."
2"A voice surfaced through the static—Control, distant and thin—then dissolved into an electronic whine."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1624
adjectiveStacks0
stackExamples(empty)
adverbCount35
adverbRatio0.021551724137931036
lyAdverbCount5
lyAdverbRatio0.003078817733990148
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
mean8.57
std5.66
cv0.66
sampleLengths
08
116
28
323
420
511
611
74
83
916
1022
112
125
1312
1414
1512
1610
1717
183
1918
207
215
229
2314
2417
2511
264
2711
286
2913
304
317
3212
333
3417
354
3611
378
3813
3912
402
413
424
438
444
455
463
4713
487
4910
43.90% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats13
diversityRatio0.27230046948356806
totalSentences213
uniqueOpeners58
62.11% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences161
matches
0"Somewhere in the dark, a"
1"Then a door slammed."
2"Then he pulled a small"
ratio0.019
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount43
totalSentences161
matches
0"It silvered the pavement, blurred"
1"He was fast, but he"
2"She had seen him before"
3"His eyes caught the green"
4"He turned down an alley"
5"Her boots struck standing water."
6"It ran cold beneath her"
7"He vaulted the low rail"
8"Her worn leather watch knocked"
9"She glanced at it out"
10"He didn’t stop."
11"He reached the far end"
12"She smelled damp concrete, rust,"
13"She put a hand to"
14"She repeated the location."
15"She stared at the open"
16"She had learned to distrust"
17"She kept her weapon low,"
18"She photographed it with her"
19"It wasn’t the muffled hum"
ratio0.267
37.64% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount136
totalSentences161
matches
0"Rain drove through Soho in"
1"It silvered the pavement, blurred"
2"Detective Harlow Quinn kept the"
3"He was fast, but he"
4"She had seen him before"
5"Owen Vale, if the name"
6"A runner for people who"
7"Vale glanced back."
8"His eyes caught the green"
9"He turned down an alley"
10"Her boots struck standing water."
11"A bin toppled as Vale"
12"Quinn skidded around the obstacle,"
13"The rain had found the"
14"It ran cold beneath her"
15"A horn blared."
16"He vaulted the low rail"
17"Quinn went over the rail"
18"The landing jolted her knees."
19"Her worn leather watch knocked"
ratio0.845
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount4
totalSentences161
matches
0"If Vale was in danger,"
1"If the door opened onto"
2"If the stories were true,"
3"Because a suspect had crossed"
ratio0.025
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences75
technicalSentenceCount1
matches
0"Tomás Herrera, former paramedic, now an unlicensed doctor for people who preferred their injuries unrecorded."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags6
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount1
fancyTags
0"Quinn shouted (shout)"
dialogueSentences46
tagDensity0.109
leniency0.217
rawRatio0.2
effectiveRatio0.043
92.6279%