Run: 2026-03-18-01KM097HGD0XJZFAR3BSQAJR2X

Run Details

Duration:
26.1s
Cost:
$0.022838
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 had polished Camden High Street to a black mirror, turning every headlight into a trembling spear of white and every shop sign into a smear of color. Harlow Quinn stood half under the awning of a closed vape shop with the hood of her coat darkened by drizzle, watching the man in the charcoal jacket cut across the road as if he owned the night. He was too careful to be innocent. He had left The Raven’s Nest twenty minutes earlier, slipping out through the side door beneath its green neon sign with a look over one shoulder and a hand tucked tight against his ribs. Harlow had seen enough in the half-second between the bar’s back door and the alley to know he was carrying something small and important. He’d kept it hidden until he thought he was alone. Then he’d looked up and seen her. Now he ran. Harlow moved after him at first with measured steps, not wasting effort. Eighteen years on the job had taught her that panic was a luxury for people who didn’t know how to use their lungs. The suspect was younger than she was, leaner, and drunk on the cheap, bright courage that came from being convinced he’d already escaped. He darted between a taxi and a delivery van, water flinging up from his shoes, and threw himself into the flow of pedestrians spilling out of a late-night kebab place. He didn’t look back again. That was his first mistake. Harlow came off the curb in a clean line, shouldering past a couple locked in a wet, laughing embrace and a cyclist cursing under his breath. She kept the man in view with short, efficient glances, her brown eyes reading movement in the crowd the way other people read traffic lights. Salt-and-pepper hair stuck damply to her temples. Her left wrist was heavy with the worn leather watch she checked on instinct, though time was already a blur of rain and footfalls and the hot, sour scrape of adrenaline in her throat. The man cut left, almost sliding on the slick pavement, and Harlow saw what he had in his hand at last: a pale object the size of his thumb, cupped tight in his fist. Not a key. Not a lighter. Bone, maybe. Carved. A token. Her stomach tightened. The Veil Market. Camden. She’d heard the name whispered in the wrong corners by the wrong people, spoken with the same reverence and caution people reserved for armed men and bad luck. A market that moved every full moon. A market beneath a forgotten Tube station, where you could buy things that had no business existing and ask questions that got answered for the right price. Banned alchemy. Enchanted goods. Names. Locations. Secrets. The kind of place criminals liked because it made them feel protected. The kind of place she hated because protection was never free. The suspect took the alley beside a shuttered record shop and Harlow lengthened her stride, boots striking water-slick asphalt with a hard, steady rhythm. A burst of music leaked from somewhere behind her, muffled by rain and traffic, and then died as the alley swallowed it. The man was already halfway to the far end, his shoulders hunched, his breath probably ragged, though Harlow couldn’t hear it over the rain hammering metal bins and grimy brick. He reached the alley mouth and vanished around the corner. Harlow came out after him and almost ran straight into a wall of people. Camden, even late, even in weather like this, never went fully empty. A cluster of smokers huddled beneath a broken awning. A woman with blue hair and glitter on her cheek leaned into a doorway laughing too loudly. Two men argued over a phone with their faces lit ghost-white by the screen. Harlow threaded through them, catching a flash of charcoal jacket at the far end of the street, then the man’s shoulder as he turned hard right into a narrower road lined with closed stalls and boarded-up music shops. He was heading toward the station. Not the working station, either. The old one. Harlow’s mouth flattened. Of course he was. The abandoned Tube entrance sat half-hidden beneath a concrete overhang and a nest of rusted railings. It looked dead from the street, a place boarded up for decades and forgotten by everyone except the people who used neglect as camouflage. Someone had plastered the wall with peeling gig posters and half-torn notices. Rain had softened the paper to pulp. Under the dim amber of a single security lamp, Harlow saw the suspect stumble once, catch himself, and then disappear down the steps two at a time. She stopped at the top of the stairwell. For a beat, only rain spoke. It hissed on the stair edges, ran in narrow rivers into the darkness below, and dripped from the bent lip of the station roof. The entrance breathed cold air up at her, stale and metallic, with a hint underneath it she couldn’t name. Ozone, maybe. Or incense gone bitter. No backup. Bad signal. No clear warrant that would mean anything if half the stories about the Veil Market were true. Her right hand settled over the grip of her pistol beneath her coat. The movement was automatic, precise, almost ritual. She checked the street behind her without moving her head. No sign of the suspect’s friends, but that meant nothing. People who dealt in secrets preferred to arrive after the damage was done. She looked down the stairs again and saw something pale lying on the first landing. The bone token. He’d dropped it. Harlow swore under her breath and descended fast enough that the rain had only just reached her shoulders when she crouched to scoop the token from the wet concrete. It was warmer than it should have been, a faint heat against her glove that raised the hair along her forearm. The thing was oval, smooth, and etched with a pattern so fine it looked almost like a map if she tilted it toward the light. She closed her fingers around it and straightened. Far below, a door clanged. Voices answered. Not loud, but enough. The suspect had not gotten far. She could still turn around. Call it in. Leave this to someone with a warrant, a team, and better knowledge of what waited under Camden. Instead she thought of the look on the man’s face when he’d seen her. Not fear. Recognition. He’d known exactly who was chasing him, and he’d run here anyway. That meant he expected to lose her or lure her in. Harlow stood for one more second with rain beading on her eyelashes and her jaw set so hard it ached. Her watch ticked under her sleeve. Somewhere in her memory, three years back, DS Morris laughed at something she couldn’t remember now, the sound cut off too fast and too suddenly by a darkness she still couldn’t name. She did not let herself think about that long. Not tonight. Tonight was for forward motion. She tucked the bone token into her palm and went down. The stairwell narrowed into a corridor lined with old tile, the original station sign still bolted above a sealed-off archway. Water leaked down the walls in slow black threads. By the time she reached the bottom, the air had changed entirely. It was warmer here, crowded with the smells of wet wool, cigarette smoke, spilled alcohol, and something sweeter beneath it all, almost medicinal. Her skin prickled as the corridor opened into the station proper. The place was vast. The abandoned Tube platform had become a hidden world. Tarps and hanging cloth broke up the ceiling into makeshift lanes. String lights glowed in draped skeins of orange and green. Stalls rose from the old platform edges, their tables crowded with sealed jars, brass instruments, vials clouded with colored liquid, bundles of dried herbs, little boxes of unknown purpose. People moved in the half-light with their faces shadowed, their voices low and careful. Some wore ordinary street clothes. Others looked as if they’d walked out of a nightmare dressed for dinner. Harlow kept still for a moment and let her eyes adjust. A man with a scar split through one eyebrow stood behind a table of silver charms and watched her over clasped hands. A woman in a red scarf counted stacks of notes with gloved fingers while a customer leaned close to whisper into her ear. A boy no older than seventeen carried a tray of black glass ampoules as though they might bite him. Somewhere beyond the nearest row of stalls, someone laughed too sharply and then fell silent. The place buzzed with purpose and menace. Not chaos. Never chaos. Order with rotten teeth. Harlow moved slowly, every sense up and sharpened. The bone token in her hand felt heavier now, as if it had soaked up the heat of her skin and decided it belonged there. She showed it to the nearest sentry, a broad-shouldered woman in a hooded coat who stood by a narrow gate welded into an old service partition. The woman’s eyes flicked once to Harlow’s face, then to the token. “You’re late,” the sentry said. Harlow held her expression flat. “I’m not here for the tour.” The sentry’s mouth twitched, almost a smile. She stepped aside and the gate buzzed open with a sound like a trapped insect. Harlow passed through. The market beyond the gate was denser, narrower, built into the bones of the station’s old service tunnels. The ceiling pressed low. The fluorescent strips overhead flickered, making shadows stutter. She caught flashes of movement ahead and recognized the charcoal jacket weaving through the crowd with desperate speed. He was still trying to lose her. That made him either arrogant or frightened enough to make stupid decisions. Probably both. A man with a face like boiled leather stepped into her path, blocking the tunnel with a smile that never reached his eyes. “You’re not dressed for this level of commerce, Detective.” Her hand did not come off the pistol. “Move.” The man glanced at her hand, then at the token she’d slipped into her pocket. Something changed in his expression. He gave a shallow bow and stepped aside as if she’d paid enough to deserve it. That was worse than a fight. It meant the token mattered. Ahead, the suspect vanished through a curtain of hanging beads into a side corridor marked by a row of candle stubs tucked into the wall. Harlow pushed after him, shoulders brushing strangers, her coat catching on a crate corner. She heard whispered prices, fragments of deals, the hiss of someone arguing in a language she didn’t know. Once she caught sight of a small table covered in books bound in something that was definitely not leather and looked away before curiosity could slow her. She had been in dangerous places before. She had kicked in doors in tower blocks and warehouses and cellar clubs with blood on the floor. But this was different. This place wasn’t hiding from the law. It had built itself beneath the law and learned how to breathe there. The tunnel bent. The crowd thinned. And there, ten yards ahead, the man in the charcoal jacket stopped at a heavy metal door half-concealed behind stacked crates. He turned, finally, and Harlow saw his face in full. Young. Pale. Eyes gone wide with the shock of being cornered. He lifted his hand, and for a single instant she thought he might surrender. Then she saw the token absent from his fingers. He’d needed it to get in. He’d used it. And now she had it. His gaze locked on her pocket, and the look that spread across his face was not fear anymore. It was something much worse. Concern. “Detective,” he said, too softly for the people around them to hear. “You shouldn’t have come down here.” Harlow didn’t slow. “That’s not your call.” His eyes flicked past her shoulder, toward the crowd, the ceiling, the far tunnel where the market thickened and moved like a living thing. “It is if you want to leave alive.” He shoved the door open and disappeared inside. The door swung partly closed behind him, leaving a wedge of darkness and the cold draft of somewhere deeper. Harlow reached the threshold and stopped. Behind her lay the surface, rain, sirens she couldn’t hear yet, rules she could still pretend to serve. Ahead waited a market built on lies and traded in things she could not name. The bone token was warm in her pocket. The air from beyond the door smelled of damp stone and old electricity, and beneath it something else—something that made the back of her throat tighten with the instinct to turn and run. She thought of calling this in. Thought of waiting for uniforms, for forensics, for a team that would tell her no and mean it. Thought of the report she would have to write if she came back empty-handed. Thought of Morris, and the blank space where explanation should have been. Then she tightened her jaw, slid the pistol free in a smooth practiced motion, and stepped through the door.
created_at"2026-03-18T10:52:57.756Z" 3/18/2026, 10:52:57 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17098
moderation_latency(null)
generation_time25813
tokens_prompt914
tokens_completion3833
native_tokens_prompt810
native_tokens_completion4940
native_tokens_completion_images0
native_tokens_reasoning2250
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0228375
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0136f5c41b94f8020169ba8409d50c81908fed5b2676981392"
is_byokfalse
latency192
model_permaslug"openai/gpt-5.4-mini-20260317"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773831177-9eOYSfDmCMPDwSakES9Q"
upstream_id"resp_0136f5c41b94f8020169ba8409d50c81908fed5b2676981392"
total_cost0.0228375
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags2
adverbTagCount0
adverbTags(empty)
dialogueSentences8
tagDensity0.25
leniency0.5
rawRatio0
effectiveRatio0
90.95% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount2210
totalAiIsmAdverbs4
found
0
adverb"suddenly"
count1
1
adverb"sharply"
count1
2
adverb"slowly"
count1
3
adverb"softly"
count1
highlights
0"suddenly"
1"sharply"
2"slowly"
3"softly"
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)
79.64% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount2210
totalAiIsms9
found
0
word"measured"
count1
1
word"efficient"
count1
2
word"stomach"
count1
3
word"etched"
count1
4
word"eyebrow"
count1
5
word"whisper"
count1
6
word"flicked"
count2
7
word"flickered"
count1
highlights
0"measured"
1"efficient"
2"stomach"
3"etched"
4"eyebrow"
5"whisper"
6"flicked"
7"flickered"
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
narrationSentences181
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount4
hedgeCount1
narrationSentences181
filterMatches
0"watch"
1"feel"
2"think"
hedgeMatches
0"tend to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences187
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen39
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords2209
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions6
unquotedAttributions0
matches(empty)
83.33% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions43
wordCount2172
uniqueNames12
maxNameDensity1.01
worstName"Harlow"
maxWindowNameDensity2.5
worstWindowName"Harlow"
discoveredNames
Camden4
High1
Street1
Quinn1
Raven1
Nest1
Harlow22
Veil2
Market2
Tube3
Morris2
Thought3
persons
0"Quinn"
1"Raven"
2"Harlow"
3"Market"
4"Morris"
places
0"Camden"
1"High"
2"Street"
globalScore0.994
windowScore0.833
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences124
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.453
wordCount2209
matches
0"Not loud, but enough"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences187
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs72
mean30.68
std29.08
cv0.948
sampleLengths
066
17
268
37
43
588
610
792
843
92
1069
117
1223
1376
1410
1514
1690
176
188
197
2086
218
2255
2321
2453
2515
263
273
2875
298
3042
3114
323
3312
3411
3574
3611
3775
384
3991
4011
4179
4215
4371
445
4511
4622
473
4855
4912
99.45% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences181
matches
0"being convinced"
1"got answered"
2"being cornered"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs364
matches
0"was carrying"
1"was heading"
2"was chasing"
3"was still trying"
4"wasn’t hiding"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount1
semicolonCount0
flaggedSentences1
totalSentences187
ratio0.005
matches
0"The air from beyond the door smelled of damp stone and old electricity, and beneath it something else—something that made the back of her throat tighten with the instinct to turn and run."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount2187
adjectiveStacks0
stackExamples(empty)
adverbCount75
adverbRatio0.03429355281207133
lyAdverbCount16
lyAdverbRatio0.007315957933241884
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences187
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences187
mean11.81
std9.04
cv0.766
sampleLengths
028
138
27
334
424
510
67
73
812
923
1023
1130
125
135
1426
1525
167
1734
1834
193
203
212
221
232
243
253
261
2728
287
2927
302
312
321
331
341
3512
3611
3724
3822
3930
4010
4114
4212
439
4417
4514
4638
476
485
493
50.09% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats18
diversityRatio0.3582887700534759
totalSentences187
uniqueOpeners67
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount8
totalSentences159
matches
0"Then he’d looked up and"
1"Of course he was."
2"Instead she thought of the"
3"Somewhere in her memory, three"
4"Somewhere beyond the nearest row"
5"Once she caught sight of"
6"Then she saw the token"
7"Then she tightened her jaw,"
ratio0.05
99.25% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount48
totalSentences159
matches
0"He was too careful to"
1"He had left The Raven’s"
2"He’d kept it hidden until"
3"He darted between a taxi"
4"He didn’t look back again."
5"She kept the man in"
6"Her left wrist was heavy"
7"Her stomach tightened."
8"She’d heard the name whispered"
9"He reached the alley mouth"
10"He was heading toward the"
11"It looked dead from the"
12"She stopped at the top"
13"It hissed on the stair"
14"Her right hand settled over"
15"She checked the street behind"
16"She looked down the stairs"
17"He’d dropped it."
18"It was warmer than it"
19"She closed her fingers around"
ratio0.302
66.92% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount125
totalSentences159
matches
0"Rain had polished Camden High"
1"Harlow Quinn stood half under"
2"He was too careful to"
3"He had left The Raven’s"
4"Harlow had seen enough in"
5"He’d kept it hidden until"
6"Harlow moved after him at"
7"The suspect was younger than"
8"He darted between a taxi"
9"He didn’t look back again."
10"That was his first mistake."
11"Harlow came off the curb"
12"She kept the man in"
13"Salt-and-pepper hair stuck damply to"
14"Her left wrist was heavy"
15"The man cut left, almost"
16"Her stomach tightened."
17"The Veil Market."
18"She’d heard the name whispered"
19"A market that moved every"
ratio0.786
62.89% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences159
matches
0"Now he ran."
1"By the time she reached"
ratio0.013
95.76% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences91
technicalSentenceCount6
matches
0"Harlow Quinn stood half under the awning of a closed vape shop with the hood of her coat darkened by drizzle, watching the man in the charcoal jacket cut across…"
1"The suspect was younger than she was, leaner, and drunk on the cheap, bright courage that came from being convinced he’d already escaped."
2"A market beneath a forgotten Tube station, where you could buy things that had no business existing and ask questions that got answered for the right price."
3"She showed it to the nearest sentry, a broad-shouldered woman in a hooded coat who stood by a narrow gate welded into an old service partition."
4"Once she caught sight of a small table covered in books bound in something that was definitely not leather and looked away before curiosity could slow her."
5"The air from beyond the door smelled of damp stone and old electricity, and beneath it something else—something that made the back of her throat tighten with th…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags2
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences8
tagDensity0.25
leniency0.5
rawRatio0
effectiveRatio0
94.2759%