Run: 2026-02-17-01KHMQFF83WFHTH3B1T7255CX6

Run Details

Duration:
24.4s
Cost:
$0.017862
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 ran, boots pounding the slick pavement, each stride measured and exact—a pace honed by years of practice, by the necessity of always being a step behind someone running from something. Streetlights blurred against the rain, splashing sickly yellow across puddles and trash bins. Ahead, her suspect—a ghost of a silhouette in a navy raincoat—flashed between lamplight and dark, boots skidding down the curb into Old Compton Street. She skirted a fallen traffic cone, saw the shadow slip through a knot of club-goers outside a kebab shop, their laughter rising brazenly above the churning city noise. Quinn’s breath came steady, her heartbeat a hard metronome. She cut the corner sharp, felt her leather watchband bite her wrist, and pushed into the swirl of people. “Coming through! Police!” she barked, low and steely, shoving past a woman with thunder-blue hair who cursed at her in three languages. Her quarry was nimble, ducking into a side alley slick with runoff and the reek of fried oil. Harlow followed, slipping once, catching her balance with a single palm to brick. She caught a flash of the raincoat as the figure hurdled a waist-high gate and landed hard on the other side, scattering bottles. In that split second, illuminated by a glancing flash of taxi headlights from the street behind, she glimpsed the angular profile, the pinched set of the mouth: Tomás Herrera. She’d seen his face on file and in passing, in reports about backroom medics who patched up wounded criminals and cleaned up bodies that should have stayed dead. “Herrera!” she shouted. “Stop! Police!” He didn’t look back. Quinn swung herself up and over the gate, the rough iron scraping her palms. The rain worked into her eyes and trickled under her collar, soaking the seams of her shirt. The alley veered left, narrowing, and the city’s roar dulled to the hiss of rainfall on stone. She gave chase into a deeper darkness. Ahead, Tomás ducked through a crooked fire door propped with a stack of crates. Quinn strained her ears—caught the hollow echo of footsteps on stairs, metal on metal, a heavy door clanging shut. She found the door ajar, its paint flaking to bare steel. She should have waited for backup. She should have radioed in. But DS Morris’s ghost haunted every hesitation, every second’s delay, so Quinn forced herself onward, breath low and controlled, the handcuffs at her belt jangling. Beyond the door, a narrow stairwell led down into black. The air changed, wet cement and mildew replacing the scent of rain. She inched down, hand on the railing, mind flicking through case files—underground clinics, wild rumors of marketplaces patched together beneath the city, whispers of things that didn’t quite belong. At the bottom, the stairwell opened onto the ruined platform of what once had been a Tube station. Trackless, gutted, with old posters peeling from the brick. The silence pressed in. Then, a faint greenish light glimmered ahead—a thread of illumination leaking from a wrought-iron gate. Quinn pressed closer, ignoring the cold. Peering between the bars, she saw Herrera pause at a recessed alcove. He glanced behind, breath steaming, fingers searching his pockets in frantic rhythm. He withdrew something—small, white, bone-shaped. A voice, smooth and dry as old paper, floated from the darkness beyond the gate. “Bone token?” Herrera nodded, holding it forward. The unseen sentinel considered. After a moment, the gate groaned open just far enough for him to slip through. He vanished in a flicker of movement. Quinn’s pulse thudded. She reached the gate—only to find it already locked, barred by a pattern of cartilage and wire. She examined the seam. No intercom, no bell, just an odd sigil scratched into the stone. The greenish light shivered as something shifted beyond the door. Voices echoed from somewhere deeper within. Accents wound together—Spanish, Cockney, something archaic and clipped. Boots crunched grit. The air carried the dry metallic taint of ink, old paper, and something less definable. Harlow pressed her back to the wall, mind racing. Herrera was her only lead. He was running for a reason. She could walk away, radio for Unit Zero, call in the cryptic specialists who got paid to handle the city’s weirdest cases. Or she could step out of the rain and the rules, and keep moving before her advantage slipped away. She hesitated only a second. Her late partner would have called it tenacity, or maybe something less forgiving. Quinn crouched beside the gate, hands tracing the sigil. She remembered the rookies’ whispers—clues about where things were never quite as they seemed, about tokens and keys and names. She fished in her coat pocket and drew out her badge. The wet metal glinted under the green glow. She could almost hear DS Morris’s voice: If you wait for backup, you’re always behind. She forced her focus onto the bone-and-wire lattice. The sigil showed a crooked path—maybe a route, maybe a warning. She pressed the badge to the stone; nothing happened. No flash, no click. She tried a different tack, quietly knocking once, then twice in quick succession. The gate remained mute. Rain pattered from up above, following her down the steps in restless percussion. She stretched and looked for alternatives—a loose panel, a broken bar, an absent segment of wall. Her patience paid off. At the base of the far wall, behind a stack of discarded posters and an old train schedule, a break in the bricks revealed a slim passage, barely wide enough for a person. She pulled herself in sideways, boots scraping, shoulders tight. Inside, the world shifted. The air grew warm, humming faintly with the electric life of crowds and commerce. She inhaled—and the smell hit her all at once: burnt rosemary, machine oil, animal musk. She pushed through, mouth set in a grim line, and emerged behind a battered stall draped in oilcloth. Lanterns hung on twisted pipes, flickering with a light that looked like liquid jade. She had reached the Veil Market. Scores of stalls packed the underground space, snaking along the erstwhile platform and stretching around pitch-dark bends. People wove through the press, faces shadowed by hoods and jeweled masks. Some looked ordinary—a hairdresser in foil, a courier’s red bike helmet, a man with inked knuckles clutching a cage lined with ash. Others vibrated with the wrongness she felt in old case files—eyes too bright, pupils shaped like vertical slits, movements that rippled the air. She swallowed, forcing herself forward, scanning for Herrera. A flurry of patter from her right: a vendor hawking rings of copper and tarnished silver, each set with a winking animal bone. She edged along the wall, trying not to look lost, trying not to stare. Her senses sharpened. No way to call for backup here. No way out but through. Then—the briefest flicker of curly dark hair. Herrera, ducking behind a stall draped in purple velvet, exchanging quiet words with a man in a hooded overcoat. Quinn pushed closer, moving parallel, keeping to the lee of a broken advertising pillar. She fought to steady her breathing. Watch, wait, move only when the crowd does. The hooded man pressed something wrapped in cloth into Herrera’s grip. Tomás glanced about, worry etched in the tightness of his mouth, the furrow of his brow. For a split second, he met Quinn’s gaze across the throng; recognition flared, panic quick on its heels. He spun, nearly tripping over a crate of glass bottles, tried to disappear into the next row. Quinn lunged forward, only to be blocked by a vendor thrusting a tray of crumbling yellowed cards in her face—“Memory fragments, love, a pound each!” The crowd thickened, the air electric with suspicion. She jostled past, ignoring snarls and curses, boots splashing through something sticky she tried not to think about. Herrera’s coat flashed ahead as he bolted down a side tunnel, past a pair of men arguing in sharp hisses over a satchel of feathered quills. Quinn chased, feeling the old fear curling tight in her chest—DS Morris’s warning, the memory of blood pooling on an alley floor. She swore under her breath, heart hammering. The Marketed pressed in on all sides, indifferent or wary, watching with the narrowed eyes of those who trusted none, police least of all. Ahead, Tomás veered, stumbling against a pillar decorated in black-and-white photographs. Quinn closed the distance, drawing her voice into a surgeon’s blade. “Herrera. Don’t make me run you down.” He turned, chest heaving, eyes wild and brown and ringed with old exhaustion. He clutched the cloth bundle, shaking his head. “You shouldn’t be here, Detective.” She eased her hand to her belt, not quite going for the cuffs. “And yet here I am. Don’t move. We walk out together, or not at all.” The Market seemed to hold its breath. Quinn squared her shoulders, salt-and-pepper hair plastered to her scalp, her sharp jaw set with all the stubbornness the last three years had carved into her. She wasn’t sure what she’d just stepped into—only that it ran deeper and stranger than any case in her eighteen years. But her lead was here. And so was she.
created_at"2026-02-17T02:40:05.820072+00:00" 2/17/2026, 2:40:05 AM
model"openai/gpt-4.1-2025-04-14"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency347
moderation_latency(null)
generation_time24241
tokens_prompt914
tokens_completion2391
native_tokens_prompt811
native_tokens_completion2030
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)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.017862
router(null)
provider_responses
0
id"resp_0d8882b1dfbf2dc2016993d4ece4ec81978968ff5b82366f00"
status200
is_byokfalse
latency138
endpoint_id"c235abe8-11cc-42d3-95ad-72f4d198287a"
provider_name"OpenAI"
model_permaslug"openai/gpt-4.1-2025-04-14"
api_type"completions"
id"gen-1771295980-VDckUMDsRG7iCByQ35wi"
upstream_id"resp_0d8882b1dfbf2dc2016993d4ece4ec81978968ff5b82366f00"
total_cost0.017862
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)
100.0000% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1554
totalAiIsmAdverbs0
found(empty)
highlights(empty)
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)
42.0849% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1554
totalAiIsms9
found
0
word"sentinel"
count1
1
word"churning"
count1
2
word"flicker"
count2
3
word"velvet"
count1
4
word"footsteps"
count1
5
word"echo"
count1
6
word"echoed"
count1
7
word"etched"
count1
highlights
0"sentinel"
1"churning"
2"flicker"
3"velvet"
4"footsteps"
5"echo"
6"echoed"
7"etched"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences113
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount0
hedgeCount2
narrationSentences113
filterMatches(empty)
hedgeMatches
0"tried to"
1"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount0
totalSentences118
matches(empty)
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs34
mean44.82
std23.22
cv0.518
sampleLengths
070
156
222
3111
45
552
640
747
851
931
1050
1117
1231
1346
1441
1552
1647
1734
1845
1979
2065
216
2274
2360
2454
2562
2677
2753
2822
297
3026
3128
3254
339
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount1
totalSentences113
matches
0"got paid"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount1
totalVerbs268
matches
0"was running"
100.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1514
adjectiveStacks0
stackExamples(empty)
adverbCount45
adverbRatio0.029722589167767502
lyAdverbCount14
lyAdverbRatio0.009247027741083224
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences118
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences118
mean12.92
std7.56
cv0.585
sampleLengths
033
113
224
328
49
519
622
718
813
923
1029
1128
123
132
144
1514
1617
1717
187
1914
2019
2111
226
235
2425
2510
2612
2729
2818
299
304
3115
326
3312
3412
355
3615
372
385
394
4015
417
423
4317
444
4512
4610
476
488
493
46.6102% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats10
diversityRatio0.3305084745762712
totalSentences118
uniqueOpeners39
0.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags1
fancyCount1
fancyTags
0"shouted (shout)"
87.5703%