Run: 2026-02-17-01KHMR48TKX613PV5HZ97388BJ

Run Details

Duration:
54.4s
Cost:
$0.032003
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
Quinn burst through the neon-lit doorway of the Raven’s Nest, rain-slick pavement splashing beneath her boots. The green glow from the sign above illuminated her closely cropped salt-and-pepper hair, each droplet glinting like a spotlight on her resolve. She’d come in hot off a tip that someone would leave the bar tonight carrying forbidden cargo—more dangerous than the usual backroom deals. She’d recognized the figure slipping out ahead: narrow-shouldered, coat pulled tight, hood obscuring his face. Now she chased him into the night. Her coat, heavy wool from her service days, soaked through in seconds. Water weighed her shoulders, seeped into her collar. But she ran on, boots thudding, heels clattering against drain covers. She pressed her hand against a brick wall, glancing at her leather watch, wrist stiff from cold. Eighteen years on the force taught her timing—and tonight, time was all she had. With every stride, her sharp jaw clenched; each heartbeat pounded in her ears. The suspect vanished around a corner. Quinn flung herself after him, pivoting on her right foot, limbs fluid as any soldier’s. She burst into a narrow side street, puddles reflecting the neon mosaic of Soho’s bars. Her breath curled in the air. She spotted the man’s retreat through the shimmering haze: a blur of damp cloth and determined steps. He was faster, lithe, ghostlike. But she pressed onward, closing the gap. Lightning cracked overhead, momentarily illuminating the alley. She caught a glimpse of his face—hollow cheeks, eyes darting—before thunder swallowed it. He sprinted toward a manhole cover, booted foot sliding beneath the rim. Without pausing, he yanked it free and dropped into the darkness below. Quinn skidded to a halt at the hole’s edge, rain drumming on steel. For a heartbeat, she hesitated. Every instinct screamed that she’d lose him if she didn’t dive in. She dropped her shoulder into the manhole cover, sending it spinning. The hollow clang echoed into a shaft of inky black. She tested the edge with her foot, then gripped a ladder rung, half-crouched. The metal was slick, an oily sheen coating it. She slid down, each rung bending her knees into fire as the asphalt gave way to concrete. Below, steam hissed from pipes overhead. Her flashlight lay strapped to her belt; she fumbled for it. When the beam flared to life, it cut through the mist, revealing a damp stairwell descending further into the earth. Water dripped from exposed beams; the walls were mottled with mold. Months of crooked deals had corroded the place. Quinn’s pulse hammered in her ears. She pushed her sleeves above her elbows, exposing the scar on her left forearm. She traced it absently as she descended. At the bottom, she landed on grit and debris. The stench was dank, a mixture of rust, mildew, and something sour she couldn’t place. She whispered his name: “Freeze!” Her voice cracked. No answer. Just distant echoes of drip and skitter. She squared her shoulders and moved forward, boots crunching on shattered tile. A flickering lightbulb revealed a battered sign reading “Camden Town.” She frowned. This was a disused Tube station, abandoned decades ago. No official trains ran here. Her department had files on this stretch: rumored trespassing, urban explorers, sporadic reports of cult gatherings. Nothing concrete. Yet here she was, chasing a suspect into an illegal underground labyrinth. She advanced through arched doorways, each arch dripping condensation. The passage widened into a vaulted chamber hung with makeshift lanterns. Stalls formed a ragged circle around a central column. Whispers drifted over the crowd. Shadows danced across cracked tiles. A woman in a battered trench coat hawked glass bottles filled with shifting liquid—colors flickering like oil on water. A man with an ivory skull for a head tilted it in greeting when a buyer approached. Quinn’s breath caught, but she forced her jaw to stay loose. No time for dread. She scanned the clusters of strangers, every one a potential witness—or a threat. At the far end, the suspect haggled with a burly vendor over an object gleaming bone-white in his palm. He flipped it between slender fingers: a token carved from what looked like a knucklebone. Quinn’s stomach pitched. She’d heard whispers of the Veil Market, an underground bazaar that shifted stations every full moon and dealt in cursed charms and banned alchemical substances. Bone tokens were the admission fee—proof of some dark pact. The suspect clinched the token. Quinn’s heart hammered. She lunged forward, crowd parting like chaff around her, but before she closed the final steps, a hulking figure barred her way. He wore patched leathers; one eye was covered by a tuft of thick hair. Tattooed runes traced his face. He leaned down, voice low. “Lost, detective?” His accent had an edge she couldn’t place. Eastern Europe, maybe. Quinn stiffened. The vendor’s voice rose as he finished the sale. The suspect slipped the token into a hidden pocket, then melted back into the tide of bodies, his frame unremarkable once more. Quinn twisted free from the bigger man’s grip, mind racing. She sprinted after him, but the crowd swallowed her. Figures drifted in and out of the lantern glow—a pale man with eyes like liquid silver, a girl whose fingertips sprouted black feathers. Each flicker of movement teased her senses, tugging at that part of her that had never fully believed reality ended at the city’s surface. She lunged across a stall draped with dried herbs that whispered when brushed. A scent of charred wood and smoked lavender clung to her nostrils. She glimpsed the suspect again disappearing behind a heavy velvet curtain, sliding into a narrow corridor. Quinn charged it, adrenaline spiking. The lantern cast her shadow tall and monstrous against the wall. She reached the curtain, tore it aside. Beyond was a raw brick alcove. A filthy ladder climbed into darkness. She hopped onto the bottom rung, fingers closing on cold metal. She hauled herself upward, climbing until her hands scraped against a trapdoor. She pushed with her shoulder, and the hatch creaked open. A blast of damp night air hit her face. She crawled onto a ledge above. Rain pattered against the metal landing. Quinn peered out: an old service entrance carved into a brick wall, marked only by the faint imprint of a sign long painted over. Puddles reflected a ghostly green glow from somewhere deeper below. The suspect was gone. She was alone. Her mind raced. This hidden stairwell must connect to the service tunnels the suspect had used to access the Veil Market. Without a bone token, though, she had no right to be here, no bargaining chip. And yet if she lost him now—if he disappeared into this illegal market with its rumored supernatural clientele—her case would crumble. Worse, she might run into something she wasn’t prepared to face. She crouched at the hatch, tucking her flashlight into her belt. She gloved hand traced her watch. Twenty-three minutes past midnight. Three more until her backup, if they even arrived. She exhaled, condensation misting in the beam of her flashlight. Her mind wandered back to DS Morris, her partner lost three years ago under inexplicable circumstances. She’d never found what happened to him—something that had never made sense in police files. Now, each clue pointed toward this underworld of enchanted trades. A distant bell tolled, echoing through the tunnels. Full moon, according to the old station’s clock above. The Veil Market thrummed somewhere below. Quinn weighed the options: descend into unknown territory with only a service revolver and half-broken flashlight—or retreat, regroup, and risk watching her suspect vanish for good. Her training said fall back. Her instincts yelled go. The hatch groaned as she lifted it, revealing a vertical shaft descending into rabbit warrens of rail lines and service walkways. Below, the lantern glow winked at her. Voices swirled up, teasing with promises of forbidden knowledge. She felt the ground’s faint tremble from trains long underground, then recognized the hollow hum as something else—like the heartbeat of the station itself, bleeding magic into the bricks. She slid the hatch shut behind her, half-expecting it to seal. Silence, except for her own ragged breaths. Quinn peered over the edge, boots balanced on the rim. She flicked on her torch. In the pool of light, she saw a sign crudely attached to the wall: “Bone token required. No exceptions.” Below, stone steps curled down into blackness. Cold dread and exhilaration tangled inside her chest. She knelt, placing a palm on the smooth metal of her revolver’s grip. Her other hand pressed against the worn leather of her watch. She’d risked everything to follow this suspect here. If she descended, there would be no official backup, no other officers, and perhaps no way back. But if she didn’t, the trail would die underground. The first step beckoned, slick with moisture. She drew in a steady breath and placed her boot on it. Below, voices hushed as if in reverence. The air smelled of iron and moth wings. She lifted her gaze, heart thundering, and started down. Each step carried her farther from the world she knew, into corridors lined with secrets that defied explanation. The rain above was a distant memory now, replaced by the market’s pulse. With every fiber of her disciplined mind screaming caution, she descended—into the Veil Market’s embrace.
created_at"2026-02-17T02:51:57.181645+00:00" 2/17/2026, 2:51:57 AM
model"openai/o4-mini-high-2025-04-16"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4324
moderation_latency(null)
generation_time54282
tokens_prompt914
tokens_completion3211
native_tokens_prompt810
native_tokens_completion7071
native_tokens_completion_images0
native_tokens_reasoning4992
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"
usage0.0320034
router(null)
provider_responses
0
id"resp_0b7014f5425c3a13016993d7967088819785f71acd1e0281f2"
status200
is_byokfalse
latency156
endpoint_id"60020533-2fb2-4aa1-9454-181029fd52de"
provider_name"OpenAI"
model_permaslug"openai/o4-mini-high-2025-04-16"
api_type"completions"
id"gen-1771296662-MK2zPk7uc8QrRJd2M16q"
upstream_id"resp_0b7014f5425c3a13016993d7967088819785f71acd1e0281f2"
total_cost0.0320034
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
totalTags2
adverbTagCount0
adverbTags(empty)
100.0000% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1577
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)
36.5885% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1577
totalAiIsms10
found
0
word"mosaic"
count1
1
word"flicker"
count1
2
word"flicked"
count1
3
word"gleaming"
count1
4
word"glinting"
count1
5
word"velvet"
count1
6
word"jaw clenched"
count1
7
word"echoed"
count1
8
word"echoes"
count1
9
word"echoing"
count1
highlights
0"mosaic"
1"flicker"
2"flicked"
3"gleaming"
4"glinting"
5"velvet"
6"jaw clenched"
7"echoed"
8"echoes"
9"echoing"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"jaw/fists clenched"
count1
highlights
0"jaw clenched"
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences140
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount3
hedgeCount1
narrationSentences140
filterMatches
0"watch"
hedgeMatches
0"happened to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount1
totalSentences140
matches
0"screamed that she’d"
13.8830% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs22
mean70.64
std14.03
cv0.199
sampleLengths
083
175
271
357
477
583
653
756
8103
972
1069
1197
1264
1360
1447
1568
1681
1758
1866
1959
2066
2189
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount3
totalSentences140
matches
0"were mottled"
1"was covered"
2"was gone"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount1
totalVerbs286
matches
0"was, chasing"
100.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1567
adjectiveStacks0
stackExamples(empty)
adverbCount33
adverbRatio0.021059349074664963
lyAdverbCount10
lyAdverbRatio0.006381620931716656
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences140
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences140
mean11.1
std5.75
cv0.518
sampleLengths
016
122
223
315
47
512
68
711
817
914
1013
116
1215
1315
146
1517
165
177
187
1913
2012
2112
2213
235
2412
2511
2610
2713
289
2917
306
3111
3220
3311
348
356
3614
377
389
3915
408
412
427
4312
4412
459
465
4716
482
4912
48.3333% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats9
diversityRatio0.32857142857142857
totalSentences140
uniqueOpeners46
0.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags2
fancyCount2
fancyTags
0"whispered (whisper)"
1"revealed (reveal)"
82.2826%