Run: 2026-07-09-01KX41BDTTXNESJH2H96K085FS

Run Details

Duration:
14.1s
Cost:
$0.014220
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 Soho into a mirror broken by footsteps. Detective Harlow Quinn saw the suspect in fragments: a black coat flashing between umbrellas, one pale hand gripping a leather satchel, the sharp turn of a shoulder beneath the green neon sign above the Raven’s Nest. Then the crowd swallowed him. “Stop!” Her command vanished beneath the hiss of tires and the rain drumming on awnings. Quinn shoved through a knot of tourists outside a late-night kebab shop, her shoulder catching a man’s chest. He cursed after her. She didn’t look back. Her boots struck the pavement in measured, punishing beats. Military precision had kept her alive through eighteen years of police work, but the suspect had the loose, frantic speed of someone who knew the city by its cracks. He cut left into an alley between shuttered boutiques. Quinn followed, one hand grazing the brick wall as she turned. The alley ended at a chain-link gate. The suspect vaulted it. Quinn stopped only long enough to unhook the latch. Beyond lay a service lane shining with oil and rainwater. A red double-decker bus groaned past at the far end, throwing a sheet of dirty spray across the road. The suspect emerged from behind a dumpster and ran straight through it. Quinn went after him. Cold water slapped her trousers. Her closely cropped salt-and-pepper hair was already plastered to her scalp, and rain ran from her brow into her eyes. She wiped it away with the back of her hand and caught sight of the suspect climbing the stairs to a railway arch. He looked back. For half a second, their eyes met beneath the jaundiced streetlamp. His face was young—thirty, perhaps—though fear had pulled it thin. In his right hand, he held something small and white. A piece of bone. Quinn’s instincts tightened. “Police!” she shouted. “Drop it!” He disappeared beneath the arch. She reached the stairs and took them three at a time. The old railway passage beyond was blocked at one end by scaffolding, but the suspect had found a gap in the hoarding. Quinn slipped through after him, tearing her coat on a protruding nail. The sound of his footsteps echoed ahead. Then came a metal clang, followed by a muffled cry. Quinn slowed. The passage opened into a disused underground concourse. She knew the location from the maps: an abandoned Tube station beneath Camden, closed decades ago after a structural collapse and quietly forgotten by most of London. Water dripped from the tiled ceiling. Old advertisements peeled from the walls in long, damp strips. A single electric bulb swung overhead. Beyond it, the suspect was gone. Quinn drew her service pistol. The station smelled of rust, wet stone, and something sweetly rotten. She moved forward, keeping close to the wall. Her left wristwatch ticked beneath her soaked cuff, absurdly loud in the silence. The leather strap had been a gift from DS Morris, bought in a market stall three years ago. He had worn it while they worked the case that killed him—or had taken him. The official report said accident. Quinn had never believed it. A whisper stirred somewhere beyond the tiled columns. “Detective.” Quinn raised her weapon. The suspect stood at the far end of the platform, framed by a dark archway. The white object was still in his hand. Behind him, where a service tunnel should have been, flickered a line of blue lamps. “You’re trespassing,” Quinn said. His laugh shook. “You followed me.” “Put the bone down.” “You don’t know what’s down here.” “I know you’re wanted for questioning in connection with three break-ins, one assault, and the disappearance of a police evidence box.” “The box wasn’t evidence.” “Hands where I can see them.” He glanced behind himself. That was enough. Quinn advanced. The suspect backed into the archway. “If you cross that line, they’ll take your weapon.” “Who will?” He lifted the bone token. The blue lamps went out. Darkness swallowed the platform. Quinn’s pistol light snapped on. The beam caught the suspect’s face, his clenched teeth, the satchel at his side. It also caught the pale outline of a woman standing behind him. She was tall and motionless, wrapped in a coat made from what looked like black feathers. Quinn’s finger tightened along the frame of her pistol. The woman smiled. Not a human smile. Too many teeth, too evenly spaced. The suspect turned and ran. Quinn had a choice: stop him, or retreat while the station still looked like a station. She fired one round into the ceiling. The shot thundered through the tunnels. Dust fell in a gray veil. “Stop!” The suspect stumbled but kept moving. He vanished through the archway. The woman remained. Quinn held her ground. “You’re under arrest.” The woman tilted her head. “You are not the first officer to say that.” Something cold brushed Quinn’s cheek. She pivoted, but nothing stood behind her. Only tiled wall, wet and blank. Her radio crackled. “Quinn?” Tomás Herrera’s voice. “Quinn, where are you?” She thumbed the transmit button. “Abandoned station beneath Camden. I’m in pursuit of a suspect. Send units.” Static answered. Then Tomás again, quieter. “Don’t go through the arch.” Quinn stared at the woman. “How do you know I’m here?” “I followed you from the Nest,” Tomás said. “Listen to me. The tunnel beyond that arch isn’t part of the station.” The woman’s smile widened. Quinn looked past her toward the darkness where the suspect had disappeared. Blue light pulsed there now, faint as a heartbeat. She could hear voices: bargaining, laughter, the clink of glass, a baby crying somewhere far underground. “What is it?” Quinn asked. “A market,” Tomás said. “Not ours.” “Whose?” The radio hissed. His answer came through broken and breathless. “Everyone else’s.” The woman stepped aside. Beyond her, the tunnel had changed. The old brick walls gave way to black stone veined with silver. Lanterns hung from hooks shaped like fingers. Figures moved beneath them—some human, some almost human, some wrapped in shadows that refused to match their bodies. A sign had been painted above the passage in red letters. VEIL MARKET. Quinn knew the name. She had heard it whispered in connection with the stolen evidence box, with missing persons, with Morris’s final case. The reports called it an urban legend. A criminal network. A rumor used to frighten informants. The suspect stood among the crowd, looking back at her. He held up the bone token. The market surged around him. Quinn lowered her pistol by an inch. This was unfamiliar territory. Every instinct trained into her told her to call for backup, secure the perimeter, wait for a warrant, wait for someone who understood what she was seeing. But Morris had waited three years for answers. His last message had been found in a locked evidence drawer, written in ink that vanished under sunlight. DON’T TRUST THE DOOR. The suspect turned away. “Quinn,” Tomás said in her ear, now close enough that she could hear him running behind her. “If you enter, keep the token visible. Don’t accept anything. Don’t give them your name.” The detective glanced at the woman in feathers. “What happens if I don’t?” “They’ll know you were here.” “I think they already do.” A bell rang somewhere in the market. Every face turned toward her. Quinn felt the weight of the city above: the rain, the traffic, the ordinary world with its clean boundaries and reliable laws. Behind her lay the station, the platform, the pale corpse of an explanation that had never satisfied her. Ahead lay the suspect and the truth. She slid her pistol back into its holster. The woman watched her with bright, patient eyes. Quinn stepped across the threshold. The air changed first. It warmed against her wet skin, thick with smoke, spice, metal, and a scent like roses left too long in a vase. The tunnel widened into a cavernous station beneath the station, crowded with stalls and crooked awnings. Enchanted knives gleamed in velvet cases. Bottles of green liquid crawled with tiny lights. A man with antlers argued over a silver tooth. A woman whose face was hidden behind a porcelain mask sold folded maps that twitched like living things. At the entrance, a child in a red coat reached toward Quinn’s watch. Quinn caught the child’s wrist. The skin felt cold and smooth as wax. “Don’t,” she said. The child grinned and ran. Behind Quinn, the feathered woman stepped into the tunnel. The archway sealed itself with a wet stone sigh. Tomás came through a heartbeat later, skidding to a stop. His olive face was pale, rain darkening his short curls. The Saint Christopher medallion at his neck swung as he caught his breath. A scar ran along his left forearm, visible where his soaked sleeve had ridden up. “You followed me,” Quinn said. “I was trying to keep you alive.” “You’re going to explain this.” “Later.” The suspect disappeared into the crowd. Quinn scanned the market. “Where is he going?” Tomás pointed toward a staircase descending beneath a row of stalls. “The lower tiers.” “Then we go down.” He caught her arm. “Detective, the Market moves every full moon. Tonight is the full moon.” A tremor passed through the cavern. Dust sifted from the ceiling. Somewhere, an entire wall groaned like a ship in a storm. Quinn looked at the stairs. At their base, the suspect paused beside a booth draped in black cloth. He opened the satchel and removed a small metal box. The box bore the Metropolitan Police crest. Morris’s evidence box. The suspect looked directly at Quinn. Then he opened it. A voice spoke from inside—not through any speaker, but in the unmistakable tone of a man who had been dead for three years. “Harlow,” it said. “If you can hear this, don’t trust the detective.” Quinn’s gaze snapped to Tomás. His expression had gone rigid. The market lights flickered. Stalls shuddered. The cavern began to turn, not physically but impossibly, its streets rearranging themselves while the crowd flowed around them. Tomás released her arm. “Whatever you do,” he said, “don’t listen to the rest.” Quinn drew her pistol again. The suspect slammed the box shut and bolted down the stairs. She followed. Behind her, the Market folded its doors.
created_at"2026-07-09T18:13:30.597Z" 7/9/2026, 6:13:30 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency496
moderation_latency(null)
generation_time13618
tokens_prompt914
tokens_completion2863
native_tokens_prompt810
native_tokens_completion2235
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"
usage0.01422
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_01f44c375e9e04d3016a4fe4caa9f08197843e54001a85dbb6"
is_byokfalse
latency416
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-1783620810-Tl8bnGes3fQaC64ED3q1"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620810-rrONfmDcEHM2zcgDNGRs"
upstream_id"resp_01f44c375e9e04d3016a4fe4caa9f08197843e54001a85dbb6"
total_cost0.01422
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags10
adverbTagCount0
adverbTags(empty)
dialogueSentences45
tagDensity0.222
leniency0.444
rawRatio0
effectiveRatio0
97.09% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1721
totalAiIsmAdverbs1
found
0
adverb"sweetly"
count1
highlights
0"sweetly"
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)
56.42% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1721
totalAiIsms15
found
0
word"footsteps"
count2
1
word"measured"
count1
2
word"echoed"
count1
3
word"electric"
count1
4
word"silence"
count1
5
word"whisper"
count1
6
word"flickered"
count2
7
word"thundered"
count1
8
word"pulsed"
count1
9
word"weight"
count1
10
word"velvet"
count1
11
word"porcelain"
count1
12
word"scanned"
count1
highlights
0"footsteps"
1"measured"
2"echoed"
3"electric"
4"silence"
5"whisper"
6"flickered"
7"thundered"
8"pulsed"
9"weight"
10"velvet"
11"porcelain"
12"scanned"
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
narrationSentences177
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences177
filterMatches
0"watch"
hedgeMatches
0"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences211
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen36
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1716
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
36.29% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions60
wordCount1495
uniqueNames16
maxNameDensity2.27
worstName"Quinn"
maxWindowNameDensity3.5
worstWindowName"Quinn"
discoveredNames
Soho1
Harlow1
Quinn34
Raven1
Nest1
Tube1
Camden1
London1
Morris4
Herrera1
Tomás9
Saint1
Christopher1
Metropolitan1
Police1
Market1
persons
0"Harlow"
1"Quinn"
2"Raven"
3"Camden"
4"Morris"
5"Herrera"
6"Tomás"
7"Saint"
8"Christopher"
9"Police"
10"Market"
places
0"Soho"
1"London"
globalScore0.363
windowScore0.5
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences103
glossingSentenceCount2
matches
0"looked like black feathers"
1"looked like a station"
83.45% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.166
wordCount1716
matches
0"not through any speaker, but in the unmistakable tone of a man who had been dead for thre"
1"not physically but impossibly, its streets rearranging themselves while the cro"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences211
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs132
mean13
std15.15
cv1.165
sampleLengths
09
141
21
340
458
57
64
750
84
948
103
1131
124
133
145
155
1645
177
1810
192
2051
216
226
235
2411
2564
268
271
284
2938
304
316
324
336
3421
354
366
374
385
3915
402
415
425
434
4431
4516
469
473
4810
495
93.37% Passive voice overuse
Target: ≤2% passive sentences
passiveCount6
totalSentences177
matches
0"was blocked"
1"was gone"
2"been, flickered"
3"been painted"
4"been found"
5"was hidden"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs263
matches
0"was seeing"
88.69% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount5
semicolonCount0
flaggedSentences4
totalSentences211
ratio0.019
matches
0"His face was young—thirty, perhaps—though fear had pulled it thin."
1"He had worn it while they worked the case that killed him—or had taken him."
2"Figures moved beneath them—some human, some almost human, some wrapped in shadows that refused to match their bodies."
3"A voice spoke from inside—not through any speaker, but in the unmistakable tone of a man who had been dead for three years."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1505
adjectiveStacks0
stackExamples(empty)
adverbCount43
adverbRatio0.02857142857142857
lyAdverbCount10
lyAdverbRatio0.006644518272425249
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences211
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences211
mean8.13
std5.82
cv0.716
sampleLengths
09
136
25
31
414
518
64
74
89
929
109
1111
127
134
149
1510
1619
1712
184
195
2020
2123
223
2311
2410
2510
264
273
283
292
305
3111
3222
3312
347
3510
362
378
3827
396
4010
416
426
435
4411
458
4613
4718
4815
495
47.63% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.2985781990521327
totalSentences211
uniqueOpeners63
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount7
totalSentences162
matches
0"Then the crowd swallowed him."
1"Then came a metal clang,"
2"Too many teeth, too evenly"
3"Only tiled wall, wet and"
4"Then Tomás again, quieter."
5"Somewhere, an entire wall groaned"
6"Then he opened it."
ratio0.043
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount36
totalSentences162
matches
0"Her command vanished beneath the"
1"He cursed after her."
2"She didn’t look back."
3"Her boots struck the pavement"
4"He cut left into an"
5"Her closely cropped salt-and-pepper hair"
6"She wiped it away with"
7"He looked back."
8"His face was young—thirty, perhaps—though"
9"He disappeared beneath the arch."
10"She reached the stairs and"
11"She knew the location from"
12"She moved forward, keeping close"
13"Her left wristwatch ticked beneath"
14"He had worn it while"
15"His laugh shook."
16"He glanced behind himself."
17"He lifted the bone token."
18"It also caught the pale"
19"She was tall and motionless,"
ratio0.222
43.33% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount135
totalSentences162
matches
0"Detective Harlow Quinn saw the"
1"Her command vanished beneath the"
2"Quinn shoved through a knot"
3"He cursed after her."
4"She didn’t look back."
5"Her boots struck the pavement"
6"Military precision had kept her"
7"He cut left into an"
8"Quinn followed, one hand grazing"
9"The alley ended at a"
10"The suspect vaulted it."
11"Quinn stopped only long enough"
12"A red double-decker bus groaned"
13"The suspect emerged from behind"
14"Quinn went after him."
15"Her closely cropped salt-and-pepper hair"
16"She wiped it away with"
17"He looked back."
18"His face was young—thirty, perhaps—though"
19"A piece of bone."
ratio0.833
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences162
matches(empty)
ratio0
90.91% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences55
technicalSentenceCount4
matches
0"Military precision had kept her alive through eighteen years of police work, but the suspect had the loose, frantic speed of someone who knew the city by its cr…"
1"Every instinct trained into her told her to call for backup, secure the perimeter, wait for a warrant, wait for someone who understood what she was seeing."
2"Behind her lay the station, the platform, the pale corpse of an explanation that had never satisfied her."
3"A voice spoke from inside—not through any speaker, but in the unmistakable tone of a man who had been dead for three years."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags10
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags10
fancyCount1
fancyTags
0"she shouted (shout)"
dialogueSentences45
tagDensity0.222
leniency0.444
rawRatio0.1
effectiveRatio0.044
87.9063%