Run: 2026-02-17-01KHMQS8F9PK5Y43NGMAVKEX2X

Run Details

Duration:
22.3s
Cost:
$0.013422
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
The rain fell in steady sheets, turning the narrow Soho alley into a mirror of neon and shadow. Detective Harlow Quinn pressed herself against the wet brick wall of Dean Street, her shoulders tight, breath even. A green haze from The Raven’s Nest sign above her head flared through the drops: “RAVEN’S NEST,” it read, each letter glowing like a dying ember. She fisted her left hand, brushing the worn leather strap of her watch—her anchor to time and order. Beside her, a discarded pizza box drifted on the pavement, its grease stain rippling in the water. Quinn’s gaze cut to the back door of the bar, half-hidden behind stacked crates. It swung open. A figure slipped out—a man in a black coat, hood drawn low, something clutched in his hand. He moved with deliberate, urgent steps, scanning over one shoulder as if expecting company. His face remained hidden, but the flash of bone-white in his fist caught her eye. A bone token, she realized: a pass to the Veil Market. Her pulse quickened. She stepped out into the alley, boots splashing through shallow puddles. “Stop!” she called. Her voice was hard, drilled through eighteen years of training. The man glanced back. Their eyes met for an instant—his pupils wide, dark, inscrutable. Then he bolted. Quinn lunged after him, heart beating against her ribs like a drum. Rain pounded her shoulders, ran down the collar of her trench coat. She dropped her pistol hand to her side, thumb brushing the grip as she sprinted. Wet cobbles lurched beneath her boots; trash cans clattered as she passed. Neon from a cracked storefront sign flickered green and red across the slick ground. The suspect rounded a corner, vanishing into the tangle of Soho streets. Quinn didn’t hesitate. She followed the echo of his footsteps, the splash of his flight. At the next intersection, he darted beneath a corrugated metal overhang, then vaulted a low fence into a recessed doorway. Quinn vaulted after him, catching only a seep of pain in her thigh as she landed. A flare of annoyance. No time to nurse bruises. Inside, a narrow stairwell led down into darkness. Water dripped from the ceiling onto the steps, each footfall resounding like a distant drumbeat. Quinn flicked on her flashlight, the beam cutting through the gloom. The suspect’s form was already lower, three, four steps ahead. He came to a landing, shoved a battered metal door open, and slipped through. Quinn froze a heartbeat, listening. Beyond the door lay the echo of panting breath, the scrape of someone removing a hood, a faint metallic clink—bone against metal. She forced herself forward, flashlight bobbing as she descended again. The air grew cooler, the scent of damp concrete and stale air thick. She recognized the signage scrawled in chipped paint: Camden Town—just faded enough to be missed by outsiders. The abandoned Tube station beneath Camden, rumored to host the Veil Market. She reached the bottom step and ducked as the door creaked closed behind her. A slender beam of moonlight filtered through a high grate, illuminating motes of dust. Quinn scanned the platform: rusted tracks stretched into shadow. At her feet lay a scattering of bone fragments—tokens, discarded or lost. She picked one up, weight cold in her palm, its edges smoothed from use. A soft murmur drifted from the tunnel mouth. Quinn raised her gun and edged forward, boots sliding on grit. Partway down the tunnel, gas lamps flickered to life, orange halos igniting at intervals along the walls. Their glow revealed graffiti—cryptic symbols, alchemical diagrams, a pair of ravens facing each other in flight. She swallowed. The tales of this place said the graffiti marked the route, warding off the curious or daring them to proceed. A silhouette turned a corner at the far end, tugging a broad-shouldered figure deeper into the market’s entrance. The voice of a gatekeeper—low, cavernous—spoke a single word. The man in black lifted the bone token to the gatekeeper’s palm. The token glowed faintly, and a hidden door yawned open, swallowing them both. Quinn hurried forward. She reached the gatekeeper’s post as the door swung shut. The huge stone blocks slid together with a sound like a distant avalanche. Behind her, the lamp’s flame guttered; ahead lay absolute darkness. She clicked off her flashlight, silencing its beam. With training born of seventeen years on the force, she pressed an ear to the seam of the door. Beyond it, she heard nothing but her own heartbeat and a dull roar of conversation. She straightened, breath steadying. EntryRequirement: bone token. She still held the fragment in her hand. She glanced back toward the platform: the stairwell, her route back to the street, offered safety and the promise of daylight. Ahead: the unknown. Danger. Criminals. Supernatural forces she barely understood. She thought of DS Morris, her partner lost to something she still couldn’t name—something she suspected lurked here. The thought tightened her chest. Questions swirled: What had the suspect taken? What deal was struck in the Veil Market’s stalls—enchanted goods, banned alchemical substances, clandestine information? How deep into this cycle of crime and magic did this clique run? And was she ready to cross the threshold? Water dripped along her sleeves. Her watch face glowed dully beneath her coat. She twisted the bezel, calculating. Ten seconds. She could walk away. Report this as an unknown lead. Let a specialized unit handle it. She could be home before dawn. But the echo of a muffled scream rippled through the masonry—a single, human cry, edged with fear. Quinn stiffened. It came from beyond the stone wall, beyond the door she stood before. Someone in trouble. And if she walked away now, that person might be lost—or worse. She let her hand drift back to the pistol’s grip. The familiar heft grounded her. A second cry, more urgent, rolled through the corridor. Quinn pulled the bone token from her pocket. The bone was carved smooth, like a small vertebra, the faint etchings worn by use. She set it against the cold stone door. Her fingers trembled, not from fear but from the surge of purpose flooding her limbs. She pressed gently. A tender pulse of light. Then the blocks shifted apart. Beyond lay a narrow hallway carved into the old station’s foundations. Lamplight glittered against iron railings, illuminating a curved tunnel hung with countless strings of lanterns—some glass, some paper, some flickering with unnatural blue and violet flames. Voices echoed: a mix of accents, human and inhuman. Quinn caught the clink of glass bottles and the rustle of fabric. The scent of strange spices and old parchment filled the air. She stepped inside. The door closed behind with a final, decisive thud. Concrete walls blackened with age pressed in on both sides. One by one, stalls appeared: a woman with elongated fingers passed a vial glowing rose; a man with silver-flecked hair sharpened an obsidian blade; a child wearing a mask of carved bone whispered over a stoop of ancient tomes. Quinn kept her gun low, finger resting on the trigger guard. She advanced, senses heightening. Every shadow could conceal a threat. Every whispered transaction a trap. She reminded herself: military precision. Observe. Report. Contain. But she also reminded herself of her duty: protect the innocent, no matter where they were found—on rain-slick streets or in the subterranean halls of a black market. She paused at a stall lit by lanterns shaped like raven skulls. The merchant was a woman in a velvet cloak, eyes bright as opals. She glanced up, lips curving. “Detective,” she said, voice smooth. “We weren’t expecting the law tonight.” The woman’s accent was soft, slithering. Quinn’s jaw tightened. “Where is he?” she asked. “The man in black. The one who fled The Raven’s Nest.” She swallowed the lump in her throat. “I have questions.” The merchant raised an elegant eyebrow. “All here have answers. All answers come at a price.” She tapped one pale finger against a ledger bound in leather. Symbols glowed along its spine. “Are you prepared to pay?” Quinn inhaled, steadying her breath. The walls seemed to hum with power. Lanterns overhead swayed, as if alive. She lifted her pistol, finger brushing the trigger. “I follow leads,” she said quietly. “I’ll find him—inside or out.” She slipped the bone token into her pocket. The pact was made. She took one step deeper into the Veil Market, leaving the safety of the known behind. And as the concealed door ground shut again, cutting off the station above, the detective realized she was already in too deep to turn back.
created_at"2026-02-17T02:45:24.274397+00:00" 2/17/2026, 2:45:24 AM
model"openai/o4-mini-2025-04-16"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7426
moderation_latency(null)
generation_time22163
tokens_prompt914
tokens_completion2516
native_tokens_prompt810
native_tokens_completion2848
native_tokens_completion_images0
native_tokens_reasoning896
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"
usage0.0134222
router(null)
provider_responses
0
id"resp_036600f8381eaa25016993d62d9f2081908944dba8969aa5ab"
status200
is_byokfalse
latency135
endpoint_id"bd121898-b27c-4e2c-bc92-278627465a54"
provider_name"OpenAI"
model_permaslug"openai/o4-mini-2025-04-16"
api_type"completions"
id"gen-1771296301-IKEx0mtjxZqNWTQKJVQS"
upstream_id"resp_036600f8381eaa25016993d62d9f2081908944dba8969aa5ab"
total_cost0.0134222
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
0.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags5
adverbTagCount2
adverbTags
0"A green haze from The Raven’s Nest sign above her head flared through the drops: it read, each letter glowing like a dying ember. [like]"
1"she said quietly [quietly]"
93.1271% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1455
totalAiIsmAdverbs1
found
0
adverb"gently"
count1
highlights
0"gently"
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)
0.0000% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1455
totalAiIsms15
found
0
word"lurched"
count1
1
word"flickered"
count2
2
word"flicked"
count1
3
word"trembled"
count1
4
word"clandestine"
count1
5
word"velvet"
count1
6
word"calculating"
count1
7
word"weight"
count1
8
word"footfall"
count1
9
word"footsteps"
count1
10
word"echo"
count3
11
word"echoed"
count1
highlights
0"lurched"
1"flickered"
2"flicked"
3"trembled"
4"clandestine"
5"velvet"
6"calculating"
7"weight"
8"footfall"
9"footsteps"
10"echo"
11"echoed"
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
narrationSentences138
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount2
hedgeCount1
narrationSentences138
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount0
totalSentences140
matches(empty)
38.1777% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs24
mean59.79
std16.96
cv0.284
sampleLengths
097
177
241
365
472
558
679
763
874
952
1078
1169
1243
1342
1462
1568
1669
1761
1862
1947
2029
2137
2265
2325
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount4
totalSentences138
matches
0"was struck"
1"was carved"
2"were found"
3"was made"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount0
totalVerbs247
matches(empty)
94.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1404
adjectiveStacks1
stackExamples
0"ahead lay absolute darkness."
adverbCount28
adverbRatio0.019943019943019943
lyAdverbCount6
lyAdverbRatio0.004273504273504274
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
mean10.25
std6.41
cv0.625
sampleLengths
018
118
226
318
417
514
63
717
814
915
1011
113
1211
133
1410
154
1610
173
1812
1912
2015
2112
2214
2312
243
2512
2620
2716
284
295
308
3115
3211
3310
3414
355
3622
3710
3813
3917
4012
4114
4214
439
4412
4514
468
4711
4817
4916
58.3333% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.37142857142857144
totalSentences140
uniqueOpeners52
25.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags5
fancyCount3
fancyTags
0"A green haze from The Raven’s Nest sign above her head flared through the drops: it read, each letter glowing like a dying ember. (flare read, glow like)"
1"she said, voice smooth (say, voice)"
2"she said quietly (say quietly)"
76.9787%