Run: 2026-09-23-01M36RCC2ZNYWBCZG1CHS7MJ4J

Run Details

Duration:
37.2s
Cost:
$0.001620
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 turned Camden High Street into a black ribbon of reflected light. Quinn ran through it, shoes striking the pavement hard and even, one hand close to her coat, the other cutting the air. The man ahead of her glanced back. That was all the confirmation she needed. He knew she was there. “Police,” she shouted. “Stop!” He turned sideways through a knot of pedestrians. Someone swore as he shoved past. Quinn ducked under an umbrella, shoulder-checked a man in a waxed jacket, and kept him in sight: charcoal coat, close-cropped blond hair, a narrow leather case clamped under his arm. He moved with the desperate speed of someone who knew where he was going. She had watched him leave the Raven’s Nest twenty minutes ago. The green neon over the Soho bar had stained his face sickly as he stepped out into the rain. She’d followed him north through the evening crowds, certain he’d lead her to whoever had been moving stolen police evidence through the city. Instead, he’d looked back at a crossing and bolted. Quinn thumbed her radio. “Control, this is Detective Quinn. Pursuing a male suspect northbound on Camden High Street. Request units at—” The radio spat a burst of static. She adjusted it without slowing. The man cut through a narrow gap between a takeaway and a shuttered shop. Quinn followed, boots splashing through a gutter. The alley smelled of wet cardboard and old cooking oil. At the far end, he vaulted a low wall into a service yard. Quinn took the wall in one clean motion. She landed badly, pain sparking in her ankle, and pushed through it. Her breath stayed measured. Her training had taught her to count it, to make the body obey before fear could get a vote. The suspect had reached a rusted gate at the back of the yard. He fumbled with the chain, swore, then yanked it open far enough to squeeze through. Quinn was ten strides away when he vanished on the other side. She hit the gate at speed and drove it wider. Beyond lay a disused station entrance, half-hidden behind a stack of broken pallets. A sign hung crooked over the concrete stairwell, its lettering worn almost blank. Rainwater poured down the steps in silver threads. Quinn paused only long enough to listen. Below, a door slammed. She pulled her radio close. “Control, I’m entering a disused station access off—” She gave the street name, then repeated it. Static answered. She tried the emergency channel. Nothing but a faint tick, like a clock far away. She could wait for backup. She could mark the entrance, hold the perimeter, and let the suspect disappear into whatever waited below. A sensible choice, if the man hadn’t been carrying evidence. If the case didn’t already have two missing witnesses and a string of dead ends behind it. If the name Morris didn’t still arrive, uninvited, whenever she reached a door nobody else could explain. Three years ago, her partner had gone through one. Quinn set her jaw and went down. The stairs curled under the street. The rain noise thinned behind her, replaced by the deep hush of the city’s buried machinery. Her fingers brushed the rail. The iron was wet and cold enough to sting. She drew her baton and descended, taking each step as if the next might be trapped. At the bottom, a tiled passage opened into a station concourse. Dust lay thick along the walls, though fresh footprints cut through it—several sets, all headed toward the far end. A line of old posters curled from the walls. Beyond them, an iron gate stood open. The suspect’s footprints were easy to pick out. His left heel dragged. There: a dark smear on the tile where he’d stumbled. Quinn followed. The passage narrowed. Somewhere ahead, voices murmured, low and overlapping. A warm glow seeped through the dark, not the hard white of station lamps but a wavering gold that made the tiles seem to breathe. She slowed. On the other side of a service arch, the suspect stood before a second gate, speaking to a figure in a long oilskin coat. The figure had a face like folded paper, all creases and hollows. Quinn couldn’t tell if it was a mask or simply a very old man. He held out one gloved hand. The suspect hesitated, then reached into his coat and placed something in the palm. The old man examined it. A pale sliver, no bigger than a thumb joint. Bone, Quinn thought. It had been polished smooth and carved with marks that looked too fine to be scratches. The gate swung inward. The suspect slipped through. The old man shut it behind him. Quinn took two steps forward, baton low at her side. “Police. Open the gate.” The old man regarded her without surprise. “Token,” he said. “Open it.” “Token.” The word landed with the weight of a rule, not a request. The old man’s gloved fingers curled around the lock. Quinn glanced back. The station passage behind her was empty. She tried her radio once more. Static, then the same thin ticking. No response. No backup. No guarantee the entrance would still be there when she turned around. “What is this place?” she asked. “Not for those without a token.” “What happens to people who go in without one?” His eyes settled on the baton in her hand. “They are asked to leave.” A lie, or a threat. Quinn had spent eighteen years learning the shape of both. Something clattered behind her. She spun, baton raised. A small pale object skittered across the tiles and came to rest against her boot. A bone token. She crouched without taking her eyes off the old man. Its surface was warm. The markings, when she turned it, seemed to shift under the light—not moving exactly, but refusing to hold still. She closed her fist around it. The old man unlatched the gate. Quinn could wait. She could backtrack, get out into the rain, and try to bring a team down through the service entrance. If it remained an entrance. If the suspect stayed put. If the people on the other side didn’t decide to leave first. The man had evidence, and now he was among people who knew exactly how to vanish. Quinn remembered Morris’s empty coat on a chair, the little scrape in the interrogation-room door that no locksmith could account for, the report that had ended with the word unexplained because every other word had been worse. She tightened her grip on the token until its ridges bit her palm. “Fine,” she said. “I’ll take my chances.” The old man stepped aside. Beyond the gate, the station opened into a market. It filled the abandoned platforms from wall to wall, a bright, crowded sprawl under strings of lanterns. Stalls occupied the tracks and the old ticket barriers. Their owners displayed glass bottles full of dark liquid, silver chains, bundles of herbs bound with red thread, and little brass instruments with needles that spun without settling. A man in a fox-fur collar sold folded maps from beneath a sign written in a language Quinn couldn’t read. At another stall, a woman weighed gray powder into paper twists while a customer watched her with both hands wrapped around a jar. The air carried wax smoke, damp stone, and something bitterly sweet that made Quinn’s tongue feel numb. Voices rose and fell around her in several accents, some of them too soft to place. Nobody looked hurried. Nobody looked afraid. The suspect was already disappearing into the crowd. Quinn stepped through the gate. It shut behind her with a heavy metal click. She turned at once and tested the latch. It didn’t move. On the other side, the old man had vanished from view. Her pulse gave one hard kick. She forced her breathing steady and scanned the market. The suspect’s charcoal coat flashed between two stalls, then disappeared behind a canopy painted with stars. Quinn pushed into the crowd. People shifted aside, but not enough to make a path. A girl in a velvet hood stared at the bone token in Quinn’s hand. An old woman held out a tray of little stoppered vials and smiled as Quinn passed. Somewhere close by, a bell rang once, a sound as clean and bright as a spoon striking glass. Quinn kept her eyes on the charcoal coat. She had no backup, no map, and no idea what counted as a weapon here. Her radio was dead. The only exit she knew had closed behind her. Ahead, the suspect stopped at a stall piled with old books. He looked over his shoulder, found her in the crowd, and smiled. Then he lifted the leather case and slipped it into the hands of the stallkeeper. Quinn broke into a run.
created_at"2026-09-23T09:08:38.635Z" 9/23/2026, 9:08:38 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16475
moderation_latency(null)
generation_time37142
tokens_prompt888
tokens_completion2172
native_tokens_prompt810
native_tokens_completion3079
native_tokens_completion_images0
native_tokens_reasoning1245
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.0016205
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790154518-7KMfWOLbpbfyhcYFqBXU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790154518-3aFDI8Du0j6HNauLD8om"
upstream_id"resp_04ab7e5d90374e46016ab39716becc87d19f456753e16f46ab"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_04ab7e5d90374e46016ab39716becc87d19f456753e16f46ab"
is_byokfalse
latency839
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0016205
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags5
adverbTagCount0
adverbTags(empty)
dialogueSentences14
tagDensity0.357
leniency0.714
rawRatio0
effectiveRatio0
96.63% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1482
totalAiIsmAdverbs1
found
0
adverb"very"
count1
highlights
0"very"
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)
79.76% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1482
totalAiIsms6
found
0
word"measured"
count1
1
word"wavering"
count1
2
word"weight"
count1
3
word"pulse"
count1
4
word"scanned"
count1
5
word"velvet"
count1
highlights
0"measured"
1"wavering"
2"weight"
3"pulse"
4"scanned"
5"velvet"
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
emotionTells1
narrationSentences142
matches
0"looked afraid"
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount3
narrationSentences142
filterMatches
0"feel"
hedgeMatches
0"seem to"
1"seemed to"
2"try to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences151
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen38
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1480
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions8
unquotedAttributions0
matches(empty)
65.25% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions34
wordCount1416
uniqueNames9
maxNameDensity1.69
worstName"Quinn"
maxWindowNameDensity3
worstWindowName"Quinn"
discoveredNames
Camden1
High1
Street1
Raven1
Nest1
Soho1
Static2
Morris2
Quinn24
persons
0"Raven"
1"Static"
2"Morris"
3"Quinn"
places
0"Camden"
1"High"
2"Street"
3"Soho"
globalScore0.653
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences101
glossingSentenceCount0
matches(empty)
64.86% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.351
wordCount1480
matches
0"not the hard white of station lamps but a wavering gold"
1"not moving exactly, but refusing to hold still"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences151
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs62
mean23.87
std20.63
cv0.864
sampleLengths
034
17
212
34
458
562
621
712
844
943
1040
1144
127
134
1438
1566
169
177
1852
1946
2022
212
2261
2332
2414
2533
264
2711
2814
297
303
312
321
3321
3438
356
366
379
3814
3915
4023
413
4239
436
4444
4516
4650
477
485
499
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences142
matches
0"been polished"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs253
matches
0"was going"
1"was already disappearing"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount2
semicolonCount0
flaggedSentences2
totalSentences151
ratio0.013
matches
0"Dust lay thick along the walls, though fresh footprints cut through it—several sets, all headed toward the far end."
1"The markings, when she turned it, seemed to shift under the light—not moving exactly, but refusing to hold still."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1423
adjectiveStacks0
stackExamples(empty)
adverbCount43
adverbRatio0.030217849613492623
lyAdverbCount8
lyAdverbRatio0.005621925509486999
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences151
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences151
mean9.8
std6.28
cv0.641
sampleLengths
012
122
27
37
45
53
61
78
86
930
1014
1111
1219
1323
149
154
1617
177
185
1914
207
2110
2213
238
2412
254
2619
2713
2815
2912
3010
3113
3213
338
347
354
365
3716
382
395
4010
415
4217
4310
4417
4517
469
477
486
4916
41.50% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats14
diversityRatio0.304635761589404
totalSentences151
uniqueOpeners46
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount4
totalSentences133
matches
0"Instead, he’d looked back at"
1"Somewhere ahead, voices murmured, low"
2"Somewhere close by, a bell"
3"Then he lifted the leather"
ratio0.03
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount39
totalSentences133
matches
0"He knew she was there."
1"He turned sideways through a"
2"He moved with the desperate"
3"She had watched him leave"
4"She’d followed him north through"
5"She adjusted it without slowing."
6"She landed badly, pain sparking"
7"Her breath stayed measured."
8"Her training had taught her"
9"He fumbled with the chain,"
10"She hit the gate at"
11"She pulled her radio close."
12"She gave the street name,"
13"She tried the emergency channel."
14"She could wait for backup."
15"She could mark the entrance,"
16"Her fingers brushed the rail."
17"She drew her baton and"
18"His left heel dragged."
19"He held out one gloved"
ratio0.293
50.23% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount109
totalSentences133
matches
0"Quinn ran through it, shoes"
1"The man ahead of her"
2"That was all the confirmation"
3"He knew she was there."
4"He turned sideways through a"
5"Someone swore as he shoved"
6"Quinn ducked under an umbrella,"
7"He moved with the desperate"
8"She had watched him leave"
9"The green neon over the"
10"She’d followed him north through"
11"Quinn thumbed her radio."
12"The radio spat a burst"
13"She adjusted it without slowing."
14"The man cut through a"
15"Quinn followed, boots splashing through"
16"The alley smelled of wet"
17"Quinn took the wall in"
18"She landed badly, pain sparking"
19"Her breath stayed measured."
ratio0.82
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount5
totalSentences133
matches
0"If the case didn’t already"
1"If the name Morris didn’t"
2"If it remained an entrance."
3"If the suspect stayed put."
4"If the people on the"
ratio0.038
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences62
technicalSentenceCount3
matches
0"A warm glow seeped through the dark, not the hard white of station lamps but a wavering gold that made the tiles seem to breathe."
1"Quinn remembered Morris’s empty coat on a chair, the little scrape in the interrogation-room door that no locksmith could account for, the report that had ended…"
2"Their owners displayed glass bottles full of dark liquid, silver chains, bundles of herbs bound with red thread, and little brass instruments with needles that …"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags5
uselessAdditionCount0
matches(empty)
78.57% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount1
fancyTags
0"she shouted (shout)"
dialogueSentences14
tagDensity0.286
leniency0.571
rawRatio0.25
effectiveRatio0.143
92.5600%