Run: 2026-02-17-01KHMQVGC56ZYK11BEW4WTT6ND

Run Details

Duration:
29.6s
Cost:
$0.018108
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
Detective Harlow Quinn pressed her back against the rain-slicked brick of Dean Street, the green neon letters of The Raven’s Nest flickering overhead. Each pulse of light painted her sharp-jawed profile in jaundiced green, then snuffed it into shadow. Rain drummed against her shoulders, seeped through her trenchcoat collar, and pooled on the leather strap of her watch. She glanced at the alley’s mouth, heart hammering against ribs that had long ago hardened to adrenaline. A figure emerged from the bar’s open door—slender, coat hood drawn low, boots skidding on the stone. Quinn recognized the way they moved: deliberate, practiced. She didn’t know the suspect’s name yet, only the tip-off that this person trafficked in secrets darker than any Soho backroom. Quinn stalked into the street as the stranger broke into a sprint, a dark shape unspooling down the avenue. “Stop! Metropolitan Police!” Quinn’s voice cracked like a pistol shot. She raised her flashlight, beam slicing through the rain, but the suspect vanished around a corner before she could flick the siren on. She tore after them. Her boots slapped puddles. Narrow streets of Soho unfolded ahead—cobbled, slick, glimmering with displaced neon. Quinn’s breath came in frosty bursts. She lurched through a web of steam rising from a manhole, water sluicing off her hair. Three steps behind, she knew, maybe less. Each time she risked a glance over her shoulder, she saw only empty street and the wavering pool of her beam. At the intersection of Greek Street, the figure darted left into a dimly lit courtyard cluttered with overturned crates. Quinn slid to a halt at the entrance, inhaled ragged air, then plunged in. Boxes scraped across stone; she vaulted over one, foot catching on rotting wood. She stumbled, grabbed the edge of a crate, twisted free, and sprang back up. No time for pain. A rusted fire escape loomed above her. The suspect scrambled up its wrought-iron rungs in a fluid blur. Quinn matched the pace, fingertips numb as she gripped the metal, boots echoing on metal plates. She passed a window, glass streaked with rain, flickers of a lonely lamp inside. She saw movement: the suspect’s coat brushed past. Then they vanished at a landing above. Quinn surged upward, boots thudding. At the third floor, raindrops speared through holes in the platform. She peered over the railing—streetlights glowed distant, fog drifting between buildings. No sign of her quarry. She pressed on. From somewhere below, water pattered—a pool on the concrete landing. Quinn’s watch told her it was nearly midnight. Three years ago, DS Morris would have called now: check your six. But Morris had died chasing ghosts, and Quinn carried the memory of that loss like a weight in her gut. Nothing could distract her now. She edged along the fire escape to a ladder that descended two flights to a rusted door. The suspect yanked it open, slipped inside. Quinn followed, shoulder first, flashlight beam skittering over peeling paint and warped floorboards. They spilled into a narrow corridor lined with dingy mailboxes and flickering fluorescent tubes. The suspect ran for a battered metal gate at the far end. Rainwater tracked down the walls, pooling at the threshold. The figure pressed a palm against a weathered keypad, fingers tapping out a code. Before they could complete it, Quinn lunged, shoulder crashing into their back. The suspect pitched forward, code forgotten. Buttressed by momentum, Quinn barreled through the gate. The lock screamed and snapped. She recovered to see the suspect recoil, hand flying to a hilt at their waist. Quinn’s heart stuttered. A blade. She clicked her flashlight beam onto the figure. Rainwater traced rivulets down the suspect’s face, obscuring identity. They hesitated, then turned, coat flaring like a dark banner. In that instant, they disappeared through a low archway beneath the platform. Quinn sprinted after them. The corridor opened onto an abandoned Tube station beneath Camden—a cavernous space of damp bricks and cracked tiles, lit by a single sputtering bulb. Stagnant air smelled of mildew and rust. The platform was deserted, except for the suspect: a silhouette hunched by a steel door marked “Service.” The fugitive rapped gloved knuckles on the door’s cold surface. It swung inward at their touch, revealing a narrow staircase that sloped downward into blackness. Quinn paused at the arch, flashlight trembling in her fist. Somewhere below, muffled voices and the scrape of metal reached her ears. She assessed the run-down station. The sign overhead, half-chipped, read “Camden Market Station” though no trains sounded. She knew better: the Veil Market moved every full moon. Rumors said it opened here tonight. No ordinary subway at this hour. This place was a gateway to the supernatural underworld. Her pulse picked up speed. She glanced back the way she came—cold, empty corridors, rain dripping through a grate overhead. No backup. Radio signal died beneath this concrete tomb. She clicked her tongue. The suspect was already halfway down the stairs, pausing to glance over a shoulder. “Detective Quinn.” Their voice echoed, distant, amused. “You really want to go down there?” Quinn sucked in a breath. She straightened, fingers tightening on the flashlight like it was a lifeline. “You’re under arrest,” she called, voice harder than she felt. “Come back up.” They laughed softly, a sound that slid through her bones. “Up’s closed.” Then they turned and vanished into the jet-black stairwell. Quinn swallowed. Mud clung to her boots. The steel door rattled behind her. She stepped forward, flashlight beam quivering as she picked her way down the winding stairs. Each step echoed, her own breathing loud in her ears. The passage ended in a low-ceiling tunnel. Damp stone walls closed in; the air was warmer, heavier. She flicked her beam left and right. Cobwebs fluttered at the edges. Somewhere ahead, she heard muffled haggling, the clink of glass. She followed the noise, emerging at last into a vaulted chamber lit by lanterns hung from iron hooks. Tables of mismatched wood lined the space, laden with battered chests and burlap sacks. Strange wares glimmered under flickering light: vials filled with glowing powders, feathers scented with herbs, rusted locks that opened without keys. A thick undertone of spices and ozone made the air electric. A gaunt vendor in a threadbare coat looked up at her, eyes red-rimmed, and slid a bone token across the table to a hunched buyer. The token was small and white, carved in the shape of a vertebra. Quinn’s breath hitched. This was the Veil Market: the hidden black market of the supernatural, forbidden to all but those bearing bone tokens. She clicked on her watch. Midnight had come and gone. The market pulsed around her: a vendor offering a caged raven whose eyes gleamed red; a man pawing through a pile of tarnished amulets; a woman whispering over a steaming bowl of violet broth. All spoke in low tones, oblivious to her. Quinn swept her gaze, searching for the suspect in the crowd. She spotted them slipping between tables, long coat brushing the floor. In one hand, they held a similar bone token, turning it between fingers. No sign of the knife. Her pulse thrummed so loud she worried the vendors might hear it. She took a step forward and froze. Behind a stall draped with moth-eaten tapestries, a pair of eyes gleamed: a creature crouched on a crate, skin pale and eyes too bright. It chittered something in a language that crawled beneath her skin. She forced herself to advance. A stall carved with arcane runes offered lockets that hummed faintly. Quinn’s mind raced: she had no token. She wasn’t invited. She’d have to find another way out or risk being trapped in this underworld. The suspect disappeared again, melting into a knot of figures at the far end. Quinn crouched behind a barrel, chest pounding. She unzipped her coat and patted pockets. Keys, notebook, a single cigarette lighter—no token. Backing out now meant losing him. If she followed, she risked unknown magic, ambushes. But if she let him escape underground, no court in England could touch him. Her mind flicked back to DS Morris. The last case they chased together had ended in something unspeakable. She had tracked Morris here, to an illegal gathering beneath the city. He’d pressed on without backup, and she’d lost him in the dark. Tonight, she had no partner to save her if she fell. But she had the law on her side. And she had determination. She peeked around the barrel. The suspect had mounted a crate to speak with a tall man shrouded in shadows. The man’s voice was a rumble; Quinn couldn’t hear the words, but the suspect nodded, slipping the bone token into someone’s palm. Then the tall man produced another token and handed it over. A flash of hope: the suspect had procured a second token. They crossed a line of red chalk drawn on the floor and stepped through a curtain of heavy velvet. The curtain billowed as they passed, leaving Quinn’s path clear—if she dared to follow. She took a shaky breath, head spinning from the incense and whispers of the crowd. With one hand on her watch strap, she threaded her other hand into her coat and produced her badge. She waited until the suspect had vanished behind the curtain, then strode forward and pushed the velvet aside. Silence swallowed her. The curtain fell back like a closing eyelid. Ahead lay a narrow tunnel lit by phosphorescent fungi. The walls pulsed with an otherworldly glow. Quinn allowed herself a single, steadying moment. Rain still pattered somewhere above, far beyond this hidden world. She checked the strap of her watch, the only token she possessed of her mortal life. Then she squared her shoulders. She stepped through the curtain into darkness.
created_at"2026-02-17T02:46:45.133417+00:00" 2/17/2026, 2:46:45 AM
model"openai/o4-mini-high-2025-04-16"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3606
moderation_latency(null)
generation_time28695
tokens_prompt914
tokens_completion3236
native_tokens_prompt810
native_tokens_completion3913
native_tokens_completion_images0
native_tokens_reasoning1728
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"
usage0.0181082
router(null)
provider_responses
0
id"resp_01c370debab817f2016993d6774a9481949348e8d78b715836"
status200
is_byokfalse
latency150
endpoint_id"60020533-2fb2-4aa1-9454-181029fd52de"
provider_name"OpenAI"
model_permaslug"openai/o4-mini-high-2025-04-16"
api_type"completions"
id"gen-1771296375-dkIy6gzddaBF0bDmRqVe"
upstream_id"resp_01c370debab817f2016993d6774a9481949348e8d78b715836"
total_cost0.0181082
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags1
adverbTagCount0
adverbTags(empty)
87.8714% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1649
totalAiIsmAdverbs2
found
0
adverb"softly"
count1
1
adverb"really"
count1
highlights
0"softly"
1"really"
100.0000% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.0000% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
21.1643% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1649
totalAiIsms13
found
0
word"lurched"
count1
1
word"flicked"
count2
2
word"wavering"
count1
3
word"fluttered"
count1
4
word"otherworldly"
count1
5
word"loomed"
count1
6
word"velvet"
count2
7
word"weight"
count1
8
word"echoed"
count2
9
word"echoing"
count1
highlights
0"lurched"
1"flicked"
2"wavering"
3"fluttered"
4"otherworldly"
5"loomed"
6"velvet"
7"weight"
8"echoed"
9"echoing"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"flicker of emotion"
count1
highlights
0"A flash of hope"
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences150
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount5
hedgeCount0
narrationSentences150
filterMatches
0"watch"
hedgeMatches(empty)
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount1
totalSentences152
matches
0"off that this"
58.4582% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs36
mean45.31
std16.07
cv0.355
sampleLengths
075
165
233
369
464
563
635
755
837
949
1046
1144
1252
1347
1448
1547
1614
1730
1821
1938
2039
2164
2261
2352
2440
2559
2635
2763
2853
2912
3053
3144
3252
3327
3438
357
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount2
totalSentences150
matches
0"was deserted"
1"being trapped"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount0
totalVerbs306
matches(empty)
100.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1625
adjectiveStacks0
stackExamples(empty)
adverbCount36
adverbRatio0.022153846153846152
lyAdverbCount9
lyAdverbRatio0.005538461538461538
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences152
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences152
mean10.73
std5.64
cv0.525
sampleLengths
023
116
219
317
417
58
621
719
810
923
104
114
1211
136
1416
157
1621
1719
1814
1913
2014
214
227
2311
2416
2514
268
277
285
2911
3011
315
323
3310
348
3512
3620
375
3817
397
4013
4114
4212
439
4414
4512
466
478
485
4915
49.7807% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.3223684210526316
totalSentences152
uniqueOpeners49
0.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags1
fancyCount1
fancyTags
0"she called, voice harder than she felt (call, voice feel)"
83.3691%