Run: 2026-07-09-01KX411CTYM03ZK2PY51STTR29

Run Details

Duration:
14.0s
Cost:
$0.014172
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 polished Soho into a black mirror. Detective Harlow Quinn saw the suspect’s reflection break across it—long coat, narrow shoulders, one hand clamped around a canvas satchel. He cut between two parked taxis, shouldered through a knot of smokers beneath an awning, and vanished into the blue glare of a pharmacy sign. Quinn followed. Her boots struck the pavement with military rhythm. Left wrist, watch. Right hand, radio. The watch’s leather strap had gone slick with rain, but the hands remained clear: 11:47 p.m. Eight minutes since the suspect had left The Raven’s Nest. Eight minutes since the informant had leaned across the bar and whispered, “He’s carrying a bone token.” Quinn had heard stranger things in eighteen years of police work. She had believed fewer. The green neon raven above the bar pulsed behind her through the rain, staining the puddles the color of old surgical gowns. The Nest’s windows were blacked out, its walls hidden behind the familiar clutter of maps and black-and-white photographs. Inside, Tomás Herrera had been pretending not to watch her from beneath his short, curly hair, warm brown eyes following every movement while his Saint Christopher medallion rested against his shirt. He had lied badly. Quinn had caught him before he could slip through the bookshelf into the hidden room. She had found no suspect there—only dust, a concealed passage, and the faint chemical smell of something that had not been brewed in any licensed laboratory. Then the man with the satchel had bolted through the rear exit. Now Quinn rounded the corner and nearly collided with a delivery cyclist. “Move,” she snapped. The cyclist shouted after her. She ignored him. Ahead, the suspect glanced back. Quinn saw his face for less than a second: pale, sharp, frightened. Not a professional runner. His fear had the frantic, hunted quality of someone carrying a thing that wanted to be caught. He plunged down a narrow lane between brick buildings. Quinn followed into the darkness. The city fell away. Traffic noise dulled beneath the hard drumming of rain. Water poured from gutters in silver ropes. The suspect slipped, recovered, and disappeared through a gate hanging crooked on one hinge. Quinn drew her torch and crossed after him. The gate opened onto a service yard. Bins stood overturned, their contents washing toward a drain. At the far end, a steel door banged in the wind. She reached it as the latch clicked. “Police,” she called. “Stop where you are.” A train rumbled beneath her feet. Quinn froze. The service yard lay beside an old Tube entrance, its tiled stairwell sealed behind corrugated metal and construction fencing. The underground vibration rose through the soles of her boots, though no line ran beneath this part of Camden anymore. She knew the maps. She knew the closures. She knew the city’s buried infrastructure better than most men who claimed to command it. The steel door stood open. Beyond it, the stairwell descended. The suspect had gone below. Quinn took out her radio. “Control, this is Detective Quinn. Pursuing male suspect into abandoned underground access off—” Static swallowed the rest. She tried again. Nothing. The rain hissed against the metal fencing. Somewhere below, footsteps struck tile. Then came a sound like a distant crowd inhaling. Quinn looked at the dark stairs. For three years, she had carried the unanswered death of DS Morris like a stone beneath her ribs. He had vanished during a case involving stolen pharmaceuticals and a private clinic in Hackney. His body had never been found. His last transmission had contained one word, spoken through a rush of static. Market. At the time, Quinn had believed he meant a street market. She had spent six months searching stalls, warehouses, pawnshops, and every criminal network that would tolerate her questions. Now the suspect descended into an abandoned station with a bone token in his pocket. Her instincts divided cleanly. One part—the trained, decorated detective—said wait for backup. Secure the entrance. Preserve the scene. Do not enter an unknown subterranean location alone. The other part had never been trained to wait while someone disappeared. Quinn thumbed on her torch and went down. The air changed after the first flight. Rain and diesel fumes faded, replaced by wet stone, old iron, and a sweet metallic odor that caught at the back of her throat. The tiled walls were cracked and furred with black mold. Advertisements peeled from them in long strips, their smiling faces warped by damp. Her footsteps echoed. At the bottom, the corridor split. On the left, an old platform stretched into darkness. On the right, a passage glowed with amber light. Voices murmured ahead. Quinn pressed herself against the wall and listened. “—late.” “I had to lose the police.” “You brought one here.” A pause. Then the suspect said, “She won’t follow.” Quinn stepped into the light. The passage opened onto a station that could not have existed. Market stalls crowded the abandoned platform, their canopies stitched from velvet, oilcloth, and something that looked disturbingly like skin. Lanterns burned without flame. Their light pooled in colors that did not belong underground: violet, green, a pale blue that made every face look drowned. The market spread along both platforms and across the tracks. A woman with antlers arranged glass vials in a velvet-lined case. A man with eyes like polished coins weighed black crystals on a brass scale. Behind one stall, jars moved faintly in their brine. The suspect stood beside a stone archway, clutching his satchel. He stared at Quinn with open horror. Around him, conversation died. Quinn raised her warrant card. “Metropolitan Police. Step away from the bag.” No one moved. A vendor laughed softly. It sounded like a crow choking. The suspect backed toward the arch. “You shouldn’t be here.” “That makes two of us.” He pulled something from his pocket. It was a small token carved from bone, smooth with handling. Symbols had been etched into its surface: a crescent, a key, and an eye. Quinn’s gaze fixed on it. The token seemed to warm the air around it. The archway behind the suspect shuddered. Stone rippled like water. Beyond it lay another corridor, narrower and utterly dark. A woman in a red coat approached from the edge of the crowd. Her face was beautiful in a way that made Quinn think of mannequins. “Detective,” she said. “You have crossed a threshold.” Quinn’s hand tightened around her torch. “Who are you?” “Someone advising you to turn back.” “Where am I?” The woman smiled. “The Veil Market.” The name struck Quinn with the force of recognition. She had seen it in Morris’s notes, scrawled in the margin of a case file three years ago. Beneath it, he had written: Not a place. A route. The market’s stalls shifted in the corner of her vision. A butcher’s table appeared where an empty bench had been. On it lay rows of silver teeth. Quinn looked back at the entrance. The stairwell was gone. In its place stood a tiled wall bearing a faded station sign. The letters rearranged themselves while she watched. CAMDEN. Then something older. Then nothing she could read. The suspect bolted. Quinn moved before thought caught up. She crossed the platform, vaulted the tracks, and seized the back of his coat as he reached the archway. The satchel swung between them. He twisted, striking at her with an elbow. She blocked it, drove her forearm into his throat, and forced him against the stone. “What’s in the bag?” His eyes flicked toward the market. “Not yours.” “Answer me.” He grinned, and the expression cracked something in his face. “You think this is about me?” The satchel pulsed. Quinn felt it through the canvas: a slow, deliberate beat. The market went silent again. From somewhere beneath the platforms came a scrape, then another. Something was climbing the stairs on the far side of the tracks. The woman in red whispered, “Detective, if you stay, the Market will know your name.” Quinn kept the suspect pinned. “I’m not leaving.” “You don’t understand.” “No,” Quinn said. “But I understand a suspect in custody.” The man laughed against her arm. “You’re still chasing the wrong corpse.” The scrape grew louder. Quinn thought of Morris’s last transmission. Market. She thought of Tomás Herrera’s eyes at the Raven’s Nest, of the way his hand had closed around his Saint Christopher medallion when she mentioned Morris’s case. She thought of the hidden room, the illegal medicines, the lies that formed a careful wall around this place. The thing climbing from the dark gave a wet, clicking cough. Every stallholder turned toward it. Quinn could arrest the suspect. She could drag him back—if there was still a way back—and call in every unit in London. Or she could follow the satchel into a world where the law had no jurisdiction and her name might be enough to summon something worse than a warrant. Her watch ticked against her wrist. 11:52. The suspect’s grin faded. “Decide.” The archway began to close. Quinn tore the bone token from his fingers. The market erupted. Lanterns flared. Vendors shouted. A flock of black shapes burst from the rafters. The thing on the far stairs shrieked, and the sound drove a spike through Quinn’s skull. She shoved the token against the stone. The archway snapped open. Cold wind rushed through from the darkness beyond, carrying the smell of wet earth and something burned. Quinn seized the suspect’s satchel with one hand and his collar with the other. “Run,” she said. He stared at her. “That wasn’t a suggestion.” Together they plunged through the arch as the market surged behind them. The stone sealed with a thunderclap. Quinn stumbled into a tunnel lit by a line of dead-white bulbs. The suspect hit the ground hard. The satchel struck beside him. For one breath, there was only their breathing. Then a voice spoke in the darkness ahead. “Harlow?” Quinn stopped. The voice was hoarse, familiar, impossible. The suspect began to sob. Quinn lifted her torch. At the end of the tunnel stood a man in a police coat, his face hidden in shadow. “Harlow,” he said again. “You took your time.” Her fingers closed around the bone token. “Identify yourself,” she said. The figure stepped into the light. It wore DS Morris’s face.
created_at"2026-07-09T18:08:01.892Z" 7/9/2026, 6:08:01 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency344
moderation_latency(null)
generation_time13552
tokens_prompt914
tokens_completion2874
native_tokens_prompt810
native_tokens_completion2227
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.014172
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0a9f7a93ece808c6016a4fe381fa9881909eb828e8caa0e2ed"
is_byokfalse
latency199
model_permaslug"openai/gpt-5.6-luna-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620481-NANpKuhnR6b16s6kghFN"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620481-8JH73pdxe1PVDInj4Alr"
upstream_id"resp_0a9f7a93ece808c6016a4fe381fa9881909eb828e8caa0e2ed"
total_cost0.014172
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
85.71% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags10
adverbTagCount2
adverbTags
0"Then the suspect said [Then]"
1"he said again [again]"
dialogueSentences35
tagDensity0.286
leniency0.571
rawRatio0.2
effectiveRatio0.114
94.22% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1730
totalAiIsmAdverbs2
found
0
adverb"softly"
count1
1
adverb"utterly"
count1
highlights
0"softly"
1"utterly"
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)
68.21% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1730
totalAiIsms11
found
0
word"pulsed"
count2
1
word"familiar"
count2
2
word"footsteps"
count2
3
word"echoed"
count1
4
word"velvet"
count2
5
word"etched"
count1
6
word"flicked"
count1
highlights
0"pulsed"
1"familiar"
2"footsteps"
3"echoed"
4"velvet"
5"etched"
6"flicked"
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
emotionTells0
narrationSentences188
matches(empty)
89.67% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount4
hedgeCount3
narrationSentences188
filterMatches
0"watch"
1"look"
2"think"
hedgeMatches
0"seemed to"
1"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences213
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen31
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1724
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
43.15% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions61
wordCount1591
uniqueNames15
maxNameDensity2.14
worstName"Quinn"
maxWindowNameDensity3.5
worstWindowName"Quinn"
discoveredNames
Soho1
Harlow1
Quinn34
Raven2
Nest3
Tomás2
Herrera2
Saint2
Christopher2
Tube1
Camden1
Morris5
Hackney1
London1
Market3
persons
0"Harlow"
1"Quinn"
2"Raven"
3"Nest"
4"Tomás"
5"Herrera"
6"Saint"
7"Christopher"
8"Morris"
9"Market"
places
0"Soho"
1"Hackney"
2"London"
globalScore0.431
windowScore0.5
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences114
glossingSentenceCount1
matches
0"sounded like a crow choking"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1724
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences213
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs128
mean13.47
std15.37
cv1.141
sampleLengths
07
145
22
357
415
571
64
753
812
93
108
115
1233
139
145
1534
168
1727
187
197
206
212
2262
235
245
255
2618
274
284
2921
306
3152
321
3329
3415
3526
3612
378
3854
393
406
4118
423
438
441
456
464
472
487
495
92.20% Passive voice overuse
Target: ≤2% passive sentences
passiveCount7
totalSentences188
matches
0"were blacked"
1"been brewed"
2"been found"
3"been trained"
4"were cracked"
5"been etched"
6"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs275
matches
0"was climbing"
89.20% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount6
semicolonCount0
flaggedSentences4
totalSentences213
ratio0.019
matches
0"Detective Harlow Quinn saw the suspect’s reflection break across it—long coat, narrow shoulders, one hand clamped around a canvas satchel."
1"She had found no suspect there—only dust, a concealed passage, and the faint chemical smell of something that had not been brewed in any licensed laboratory."
2"One part—the trained, decorated detective—said wait for backup."
3"She could drag him back—if there was still a way back—and call in every unit in London."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1601
adjectiveStacks0
stackExamples(empty)
adverbCount32
adverbRatio0.019987507807620236
lyAdverbCount10
lyAdverbRatio0.006246096189881324
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences213
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences213
mean8.09
std5.77
cv0.713
sampleLengths
07
120
225
32
48
53
63
716
810
917
1011
114
1222
1318
1431
154
1615
1726
1812
1912
203
215
223
235
2412
254
2617
279
285
294
309
317
3214
338
347
359
3611
377
383
394
406
412
4219
4320
444
454
4615
475
485
495
48.74% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats15
diversityRatio0.33490566037735847
totalSentences212
uniqueOpeners71
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount7
totalSentences170
matches
0"Then the man with the"
1"Somewhere below, footsteps struck tile."
2"Then came a sound like"
3"Then the suspect said,"
4"Then something older."
5"Then nothing she could read."
6"Then a voice spoke in"
ratio0.041
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount40
totalSentences170
matches
0"He cut between two parked"
1"Her boots struck the pavement"
2"She had believed fewer."
3"He had lied badly."
4"She had found no suspect"
5"She ignored him."
6"His fear had the frantic,"
7"He plunged down a narrow"
8"She reached it as the"
9"She knew the maps."
10"She knew the closures."
11"She knew the city’s buried"
12"She tried again."
13"He had vanished during a"
14"His body had never been"
15"His last transmission had contained"
16"She had spent six months"
17"Her instincts divided cleanly."
18"Her footsteps echoed."
19"Their light pooled in colors"
ratio0.235
86.47% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount127
totalSentences170
matches
0"Detective Harlow Quinn saw the"
1"He cut between two parked"
2"Her boots struck the pavement"
3"The watch’s leather strap had"
4"Quinn had heard stranger things"
5"She had believed fewer."
6"The green neon raven above"
7"The Nest’s windows were blacked"
8"He had lied badly."
9"Quinn had caught him before"
10"She had found no suspect"
11"The cyclist shouted after her."
12"She ignored him."
13"Quinn saw his face for"
14"His fear had the frantic,"
15"He plunged down a narrow"
16"Quinn followed into the darkness."
17"The city fell away."
18"Traffic noise dulled beneath the"
19"Water poured from gutters in"
ratio0.747
58.82% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences170
matches
0"Now Quinn rounded the corner"
1"Now the suspect descended into"
ratio0.012
85.25% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences62
technicalSentenceCount5
matches
0"She had found no suspect there—only dust, a concealed passage, and the faint chemical smell of something that had not been brewed in any licensed laboratory."
1"She had spent six months searching stalls, warehouses, pawnshops, and every criminal network that would tolerate her questions."
2"Rain and diesel fumes faded, replaced by wet stone, old iron, and a sweet metallic odor that caught at the back of her throat."
3"Market stalls crowded the abandoned platform, their canopies stitched from velvet, oilcloth, and something that looked disturbingly like skin."
4"She thought of the hidden room, the illegal medicines, the lies that formed a careful wall around this place."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags10
uselessAdditionCount0
matches(empty)
64.29% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags10
fancyCount3
fancyTags
0"the informant had (have)"
1"she snapped (snap)"
2"The woman in red whispered (whisper)"
dialogueSentences35
tagDensity0.286
leniency0.571
rawRatio0.3
effectiveRatio0.171
90.1978%