Run: 2026-09-23-01M36NW9P6FMXB5KY11PRX824X

Run Details

Duration:
1m 8s
Cost:
$0.002189
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="4414" name="Eva Kowalski" aliases="Eva, Evie" pronouns="she/her" species="Human" storyRole="Best Friend"> <eyeColor>green</eyeColor> <hair>curly red</hair> <height>5'4"</height> <age>26</age> <glasses>round glasses</glasses> <satchel>worn leather satchel full of books</satchel> <freckles>freckled complexion</freckles> <nervousHabit>tucking hair behind her left ear</nervousHabit> <description>Aurora's childhood friend and an occult researcher.</description> <backstory>Moved to London two years before Aurora and works as a research assistant at the British Museum's restricted archives. She holds a master's degree in Ancient History from Oxford.</backstory> </character> <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> <item id="2004" name="Veil Compass" aliases="the Compass, shadow compass" type="Tool" origin="The Veil Market"> <casingMaterial>small brass compass</casingMaterial> <faceMarkings>face etched with protective sigils</faceMarkings> <needle>points toward the nearest supernatural rift or portal</needle> <patina>casing has a patina of verdigris</patina> <creator>crafted by a Shade artisan</creator> <description>A compass attuned to supernatural energy.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the mystery genre. A detective arrives at a crime scene in an unusual location. Something is wrong — the evidence doesn't add up. A colleague is present, offering a different interpretation. Through careful observation and deduction, the detective begins to see what others have missed. 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 station had been abandoned for thirty years, according to the city records. The city records had never been asked to account for the bone token. Quinn pressed it into the iron slot beside the locked service door. Something turned behind the brickwork. The lock clicked, and the door opened on a breath of cold air smelling of wet stone, lamp oil, and something sweetly rotten. “Charming,” said Patel behind her. Quinn tucked the token into her coat pocket. “You wanted the unusual location.” “I wanted the murder. The location came with it.” They went down the narrow stairs. Quinn counted them by habit: twenty-seven to the landing, another fourteen to the platform. Her worn leather watch sat snug against her left wrist. At the bottom, electric lamps swung from the old station beams. Beyond them, the abandoned Tube platform had been remade into a market: canvas awnings, folding tables, cages, jars, goods Quinn would have called contraband if she’d known what half of them were. The stalls were shuttered now. A few vendors remained, watching from the shadows with the bright stillness of people who had learned not to be surprised by police. The body lay near the yellow line. A man in a dark coat, one arm folded beneath him, the other stretched toward the track. A red gash crossed his throat. Blood had spread in a broad, glossy stain across the concrete, darkening where it ran into the platform’s cracks. Beside his hand sat a small brass compass with green patina along its casing. Protective sigils had been etched around its face. Quinn stopped several feet short. “Who found him?” “I did,” said a man in a porter’s apron. “Jory Venn. I was closing up the south stalls. Heard a shout, came over, saw him down. Didn’t touch him.” His hands were broad and clean. His apron was not. Gray dust clung to the hem and a black smear marked one knee. “Anyone else hear the shout?” Quinn asked. A woman under a striped awning shook her head. She had a line of silver bells pinned to her sleeve. “I heard a cart. That’s all.” Patel crouched near the body. “Looks like a knife. The cut’s deep enough. He bled out here.” Quinn studied the stain. “You’re certain?” “It’s a lot of blood.” “That isn’t the same thing.” Patel glanced up at her. The look said Quinn was being difficult. Quinn had been called worse by better people. She moved around the body, slow enough not to disturb the scene. The man’s coat was buttoned wrong, the lower button fastened through the wrong hole. His boots were clean. Too clean for a man who had supposedly walked along the platform, where the old tiles sweated water and the market’s foot traffic had ground a fine black grit into every seam. Quinn crouched beside the blood. No spray marked the wall behind him. No droplets stippled the yellow line. The stain spread in a smooth, shallow pool, its edge caught on the concrete’s shallow ridges. “Where’s the weapon?” she asked. “Gone,” Patel said. “Where are the footsteps?” Patel frowned. “It’s a market. There are footprints everywhere.” “Not in the blood.” The pool had dried at the edges, but its surface remained wet near the man’s neck. Quinn leaned closer. There was no arterial pattern, no fine mist, no spatter. The wound had bled, certainly. But the scene claimed a violent struggle, and the platform offered no trace of one. She looked at the dead man’s face. His mouth hung open. His skin had taken on the flat grayness of a wax figure left too near a flame. “Name?” she asked. “Alden Saye,” Venn said. “He sold information. Sometimes other things.” “Things like the compass?” No one answered. The silence was careful. Quinn looked at the brass instrument beside his hand. Its glass was intact. A verdigris crescent marked one edge of the case. The needle trembled, then swung away from north. It pointed toward the old station wall behind the closed stalls. Patel noticed her watching it. “We should bag that.” “Yes.” “You think it’s connected?” “I think it’s at a crime scene.” Patel gave a small, impatient huff. “Alden gets knifed. Whoever did it takes the knife and leaves a bauble. The rest is noise.” “Then why leave the bauble?” “To make it look like something else.” “Who would want it to look like something else?” Patel stood. “Someone who knows this place.” Quinn glanced at Venn. He had not moved. His gaze rested on the body, but his eyes kept sliding to the compass. “Mr. Venn,” she said. “You said you heard a shout.” “I did.” “From where?” He pointed toward the north end of the platform. Quinn followed his finger. The old station wall there had been bricked over, the mortar darker around a sealed arch. A market stall stood in front of it, piled with crates and bundles of dried herbs. “Did you go that way?” “No.” “Why not?” “Because the shout came from here.” He gestured to the body. The woman with the bells shifted her weight. One bell gave a single, small chime. Quinn turned back to the corpse. The dead man’s left hand lay palm-up. There was a dark line under the fingernails, almost black. She leaned closer, careful not to touch. Not dirt. Fibrous grit, pale against the skin. “Who moved him?” she asked. “I told you, I didn’t,” Venn said. “His coat’s fastened wrong. His boots are clean. There’s no struggle, no spray, and the blood’s pooled beneath him as though he’s been laid down after it started clotting.” Quinn straightened. “He wasn’t killed here.” Patel’s expression changed. The impatience had gone; in its place was the alertness she wore when a case shifted under her feet. “Then where?” she asked. Quinn’s eyes returned to the sealed arch. The compass needle shivered toward it. “Somewhere with dry floors,” Quinn said. “Somewhere he was standing when his throat was cut. Then he was brought here.” “How?” She looked at the platform. Every market stall used carts, hand trucks, crates. On the damp concrete, their wheels had left overlapping tracks. Most were smooth parallel lines. One track, near the blood, had a regular hitch in it—a small interruption repeated every turn of the wheel. Quinn followed the mark away from the body. It ran toward the south stalls, then vanished beneath a row of stacked baskets. “Mr. Venn,” she said. “What did you use to close up?” “A handcart.” “Where is it?” “Over there.” He pointed to a two-wheeled cart beside his stall. One wheel turned freely; the other had a small notch missing from its rim. Quinn looked at the track. The repeated hitch matched the gap. Venn’s gaze had followed hers. “That’s every cart down here. Old wheels.” “Not every wheel leaves the same mark.” Patel moved between him and the body. “Don’t.” Venn’s hands lifted, empty. “You can’t say I did anything from a scratch in the floor.” “No,” Quinn said. “But I can ask why your cart’s axle has fresh blood on it.” The porter looked down. A dark smear clung beneath the axle, where no one would see it without kneeling. He had missed it when he wiped his hands. He had missed the black grit beneath the corpse’s nails, too—the same pale fibers that clung in a small tuft to a splinter on the cart’s wooden bed. Patel stepped closer. “You said you didn’t touch him.” “I didn’t.” “You brought him here.” The woman with the silver bells had gone very still. Quinn saw her watching Venn now, not the body. “Where was the compass?” Quinn asked him. Venn’s jaw tightened. “On Saye when you found him?” she continued. “Or did you take it from wherever you killed him, then put it beside the body to make it part of the scene?” “I didn’t kill him.” The compass needle jerked. It pointed past Venn, toward the sealed arch. Quinn looked at the brickwork. Its lower course bore a faint crescent of disturbed dust. A narrow gap showed between two blocks, black as a closed eye. The compass wasn’t pointing at the dead man or the killer. It was pointing at the nearest rift. Patel followed her gaze. “What is that?” “Not our first question.” Quinn kept her eyes on Venn. “Saye died near the arch. You moved him on your cart and staged him here. You wanted the body found fast, with the compass beside it. You wanted us to think he’d been killed over the thing he sold.” “I told you, I heard a shout.” “You heard a cart. That’s what the woman heard, too. The shout was an explanation you added because you needed one.” Venn’s gaze flicked toward the dark seam in the wall. For the first time, fear broke through his practiced stillness. Quinn saw it. So did Patel. “Take his hands,” Patel said. Venn backed away, one step. His heel struck the cart. The broken wheel clicked against the platform. Quinn’s watch ticked once against her wrist. The sound was small, but in the dead station it carried. “Don’t,” she said. Venn glanced at the sealed arch again. Quinn understood then why he had moved the body: not to hide the killing, but to buy himself a few minutes with the thing the compass had found. Whatever lay behind that bricked-up entrance mattered more to him than the murder. Patel caught his arm. Venn twisted hard, and the market woke around them—shutters rattling, voices rising, feet shifting in the dark. Quinn seized his other wrist and drove it against the cart. The missing notch in the wheel knocked once against the concrete. “Hold him,” she said. Patel did. Quinn took the compass from the floor without letting its needle turn. The casing was cold and faintly damp beneath her fingers. At the north wall, the dark seam widened by the smallest measure. Quinn looked at the body, the blood, the cart’s broken wheel. The scene had not been telling them nothing. It had been telling them the wrong story in a dozen small, useful ways. Behind the brickwork, something scraped once against stone.
created_at"2026-09-23T08:24:54.732Z" 9/23/2026, 8:24:54 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10557
moderation_latency(null)
generation_time67530
tokens_prompt896
tokens_completion3289
native_tokens_prompt835
native_tokens_completion4211
native_tokens_completion_images0
native_tokens_reasoning1959
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"
usage0.002189
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151894-9IH3Nb2DCoNPwbpUqUkW"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151894-1cev9Lixtc87jC8Ka0KQ"
upstream_id"resp_05a39d4f65a4b2a5016ab38cd6d96087d1a71456c147f2921a"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_05a39d4f65a4b2a5016ab38cd6d96087d1a71456c147f2921a"
is_byokfalse
latency457
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.002189
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
totalTags19
adverbTagCount0
adverbTags(empty)
dialogueSentences72
tagDensity0.264
leniency0.528
rawRatio0
effectiveRatio0
94.14% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1706
totalAiIsmAdverbs2
found
0
adverb"sweetly"
count1
1
adverb"very"
count1
highlights
0"sweetly"
1"very"
80.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found
0"Patel"
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
79.48% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1706
totalAiIsms7
found
0
word"electric"
count1
1
word"etched"
count1
2
word"footsteps"
count1
3
word"silence"
count1
4
word"trembled"
count1
5
word"weight"
count1
6
word"flicked"
count1
highlights
0"electric"
1"etched"
2"footsteps"
3"silence"
4"trembled"
5"weight"
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
narrationSentences152
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount0
narrationSentences152
filterMatches
0"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences203
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen39
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1703
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions25
unquotedAttributions0
matches(empty)
27.28% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions64
wordCount1263
uniqueNames5
maxNameDensity2.45
worstName"Quinn"
maxWindowNameDensity4
worstWindowName"Venn"
discoveredNames
Patel16
Quinn31
Tube1
Venn13
One3
persons
0"Patel"
1"Quinn"
2"Venn"
3"One"
places(empty)
globalScore0.273
windowScore0.333
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences92
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.587
wordCount1703
matches
0"not to hide the killing, but to buy himself a few minutes with the thing the compass had"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences203
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs102
mean16.7
std17.14
cv1.026
sampleLengths
026
140
25
313
49
5101
67
764
88
929
1023
117
1226
1317
146
155
165
1720
1862
1934
205
213
224
239
244
2549
2628
273
2810
294
307
3141
329
331
344
357
3623
375
387
399
407
4122
4210
432
442
4545
465
471
482
4911
86.80% Passive voice overuse
Target: ≤2% passive sentences
passiveCount8
totalSentences152
matches
0"been abandoned"
1"been asked"
2"been remade"
3"were shuttered"
4"been etched"
5"been called"
6"was buttoned"
7"been bricked"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs210
matches
0"was being"
1"wasn’t pointing"
2"was pointing"
72.48% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount3
semicolonCount2
flaggedSentences5
totalSentences203
ratio0.025
matches
0"The impatience had gone; in its place was the alertness she wore when a case shifted under her feet."
1"One track, near the blood, had a regular hitch in it—a small interruption repeated every turn of the wheel."
2"One wheel turned freely; the other had a small notch missing from its rim."
3"He had missed the black grit beneath the corpse’s nails, too—the same pale fibers that clung in a small tuft to a splinter on the cart’s wooden bed."
4"Venn twisted hard, and the market woke around them—shutters rattling, voices rising, feet shifting in the dark."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1270
adjectiveStacks0
stackExamples(empty)
adverbCount27
adverbRatio0.02125984251968504
lyAdverbCount5
lyAdverbRatio0.003937007874015748
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences203
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences203
mean8.39
std6.19
cv0.738
sampleLengths
013
113
212
35
423
55
68
75
89
96
1014
1110
1211
1332
145
1523
167
1717
186
1919
2014
218
225
233
249
2520
266
274
2813
297
309
3111
326
335
3412
354
362
375
385
395
407
418
4212
4314
444
4532
465
477
486
4916
49.92% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.32019704433497537
totalSentences203
uniqueOpeners65
25.45% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences131
matches
0"Too clean for a man"
ratio0.008
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount27
totalSentences131
matches
0"They went down the narrow"
1"Her worn leather watch sat"
2"His hands were broad and"
3"His apron was not."
4"She had a line of"
5"She moved around the body,"
6"His boots were clean."
7"She looked at the dead"
8"His mouth hung open."
9"His skin had taken on"
10"Its glass was intact."
11"It pointed toward the old"
12"He had not moved."
13"His gaze rested on the"
14"He pointed toward the north"
15"He gestured to the body"
16"She leaned closer, careful not"
17"She looked at the platform."
18"It ran toward the south"
19"He pointed to a two-wheeled"
ratio0.206
55.42% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount106
totalSentences131
matches
0"The station had been abandoned"
1"The city records had never"
2"Quinn pressed it into the"
3"Something turned behind the brickwork."
4"The lock clicked, and the"
5"Quinn tucked the token into"
6"They went down the narrow"
7"Quinn counted them by habit:"
8"Her worn leather watch sat"
9"The stalls were shuttered now."
10"The body lay near the"
11"A man in a dark"
12"A red gash crossed his"
13"Blood had spread in a"
14"Quinn stopped several feet short."
15"His hands were broad and"
16"His apron was not."
17"A woman under a striped"
18"She had a line of"
19"Patel crouched near the body."
ratio0.809
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences131
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences52
technicalSentenceCount3
matches
0"A few vendors remained, watching from the shadows with the bright stillness of people who had learned not to be surprised by police."
1"Too clean for a man who had supposedly walked along the platform, where the old tiles sweated water and the market’s foot traffic had ground a fine black grit i…"
2"He had missed the black grit beneath the corpse’s nails, too—the same pale fibers that clung in a small tuft to a splinter on the cart’s wooden bed."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags19
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags17
fancyCount1
fancyTags
0"she continued (continue)"
dialogueSentences72
tagDensity0.236
leniency0.472
rawRatio0.059
effectiveRatio0.028
85.6987%