Run: 2026-09-23-01M37HP3XSTSGZJB757H7WP8YY

Run Details

Duration:
57.2s
Cost:
$0.031910
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 train indicator on the platform read NEXT TRAIN: 2 MIN, though no train had stopped there in thirty-seven years. Detective Harlow Quinn stood at the top of the disused escalator and watched the numbers hold steady. Below, a bank of portable lights threw hard white circles across the tiles. An officer in a paper suit waited beside the ticket barrier, looking up at her with the strained patience of someone who had been told not to touch anything. “Is it live?” Quinn asked. “The board? No idea, ma’am.” “The escalator.” “Power’s off. We checked.” Quinn took the stairs. Damp rose from the abandoned station beneath Camden, along with a sweet, medicinal smell that caught in the back of her throat. Her shoes rang against the steps. Halfway down, she found a bead of red glass nestled against the wall and stopped. It had a tiny hole through the middle. A bracelet bead, perhaps. She left it where it was. At the bottom, a patrol sergeant lifted the barrier tape for her. Beyond him, the concourse had been laid out like a night market. Folding tables stood in two uneven rows. Strips of black fabric hung from pipes overhead, and jars, boxes and empty trays had been abandoned in haste. Chalk prices marked the tabletops. None of the writing Quinn could see was in English. “You said it was a murder scene,” she told the sergeant. “It is. Past the platform doors.” “And this?” “We found it like this. Maybe a rave. Most of the crowd had gone before we arrived.” “How did the crowd get in?” “That’s one of several questions.” Detective Sergeant Malik Shah came out through the platform doors, fastening the cuff of his scene suit. “You’re late.” “You called me twenty minutes ago.” “I’ve been here forty.” He glanced at her shoes. “Watch the chalk.” Quinn looked down. A pale line ran across the threshold, finer than a road marking. It curved up each side of the doorframe and met at the top. Someone had drawn it with care. “Victim?” she asked. “On the platform. Male, mid-thirties. One stab wound to the chest. No identification. A witness claims she found him.” “Claims?” “She’s been less than forthcoming about why she was down here.” Shah led her past the tables. One held a set of brass scales with two white feathers on one pan and a stack of coins on the other. Another displayed little bottles packed in straw. The labels had been stripped off, but the smells remained: cloves, bleach, hot metal. Behind a third table, a cup of tea sat half full, a skin forming across its surface. People had left quickly, then. Not so quickly that they’d knocked anything over. At the platform doors Quinn paused. A spot of blood marked the tile beside the chalk line. It was no larger than a five-pence piece, with a narrow tail pointing away from the platform. “Your victim came through here,” she said. “That’s the working theory.” “After he was wounded.” Shah looked at the spot. “Maybe.” They crossed onto the platform. The lights ended twenty yards along it, leaving the far end in darkness. Old advertisements peeled from the walls. Above them, the train indicator still promised its arrival in two minutes. The man lay on his back near the yellow line. He wore a grey coat, dark trousers and boots that were too clean for the station. Blood had soaked the front of his shirt and pooled beneath his left shoulder. A compact brass object lay close to his hand. “The witness says he ran out of the tunnel,” Shah said. “Collapsed here. Someone stabbed him before he reached the station.” “Someone in the tunnel?” “That’s what I think. There’s a service entrance at the north end, off a maintenance shaft. No blood between him and there, but he might have held the wound closed.” Quinn studied the body. His right hand lay open, the fingertips lightly stained green. The left was tucked beneath his hip. His boots pointed toward the tunnel, though his head lay toward the doors. “What did the witness see?” “She heard him shout. Saw him come through the tunnel mouth and fall. She says she didn’t see anyone after him.” “Name?” “Eva Kowalski. Works at the British Museum.” “Doing what?” “Restricted archives, apparently. She won’t explain the stalls. She did volunteer that we shouldn’t pick up the brass thing.” That brought Quinn’s eyes back to it. A compass, small enough to fit in her palm. Verdigris mottled the brass casing; fine marks had been etched around its face. Its needle pointed not north along the tracks, but across the platform toward a tiled recess beneath an old WAY OUT sign. “Has anyone moved it?” “No. You know me.” Quinn crouched beside the dead man. His shirt had been cut, and the single wound sat below his right collarbone. Not a likely place for a fatal thrust, unless the blade had angled down into a major vessel. Blood had flowed over his coat lapel, yet the fabric above the wound looked clean. “Did he have the coat open when your witness saw him?” “Ask her. She’s in the old staff room.” Quinn leaned closer. A thin dark line ran along the edge of his collar, just visible against the grey wool. She shifted her light. The line resolved into stitches, clumsy and fresh, holding a narrow slit closed. Something had pierced the coat there, several inches above the wound in his shirt. Shah crouched opposite her. “Could have been damaged earlier.” “It could.” Quinn looked at his throat. A smudge of white powder lay beneath one ear. More powder caught in the seam of his coat sleeve, though the rest of him was remarkably free of the station’s dirt. She rose and walked toward the tunnel mouth. At its threshold, grit lay thick between the rails. One set of boot prints began there and led onto the platform. The prints were deep and widely spaced for the first six steps, then shortened. After that they became a scuff, a dragging toe, and finally disappeared near the body. “Looks like he ran,” Shah said. “From the tunnel mouth.” “From farther in, surely. The ballast won’t take a clean print.” Quinn shone her torch between the rails. Dust lay undisturbed past the threshold, grey and soft as flour. A cable snaked across it, filmed over from end to end. She turned her light back to the boot marks. Each had a crisp outer edge. The grit within them was damp. “He didn’t run up the tunnel,” she said. “He started here.” Shah joined her. “Then where was he before that?” “That’s what bothers me.” A uniformed officer appeared at the platform doors. “Sir? The witness is asking to leave. Says she needs to get to someone called Aurora.” “Tell her she can call from the staff room,” Shah said. Quinn looked toward the chalk line, the tables beyond it, the little blood spot leading away. “I’d like to speak to her.” Eva Kowalski sat on a plastic chair with her leather satchel locked between her knees. Books bulged against its worn seams. Her round glasses had slipped down her nose, and she pushed them up when Quinn entered. Red curls escaped a loose tie at the back of her head. She had blood on the cuff of her sleeve. “I told the other detective everything I saw,” Eva said. “You told him you saw a man run out of a tunnel.” “I did.” “Did you see him inside the tunnel?” Eva tucked a curl behind her left ear. “No. The lights don’t reach that far.” “What made you look?” “He shouted.” “What did he shout?” Eva’s fingers tightened on the satchel strap. “I couldn’t make it out.” Quinn pulled up a chair but didn’t sit. “Did he have his coat open?” Eva frowned. “I don’t know.” “Did you see the wound?” “He was holding his chest. There was blood on his hand.” She swallowed. “I tried to help him.” “How?” “I pressed my sleeve against it.” That accounted for the blood on her cuff. “Did he say anything to you?” Eva glanced at the door. “He said, ‘Keep it shut.’” “The wound?” “I thought so.” Quinn let the silence settle. Through the door came the muted crackle of a radio and Shah’s voice asking someone for an estimated time of arrival. “What is this place, Ms Kowalski?” Eva took off her glasses and wiped them on her shirt. Without them, her green eyes fixed just past Quinn’s shoulder. “People buy things here.” “What sort of things?” “Things they can’t buy elsewhere.” “That man had a compass. Was he selling it?” “I don’t know him.” “You knew what the compass was. You told my colleague not to touch it.” Eva put her glasses back on. “The needle is sharp.” “It’s behind glass.” This time Eva looked straight at her. Fear had made her careful, but it hadn’t made her stupid. Quinn waited. “The compass points to dangerous places,” Eva said at last. “It might show you one you’d rather not find.” Outside, someone called for an evidence bag. Quinn glanced at Eva’s satchel. A fine pale dust coated the buckle, like the powder on the dead man’s collar. “Were you near him before he shouted?” “No.” “Where were you?” “At a table. By the platform doors.” “Show me.” Eva hesitated, then stood. She hugged the satchel to her chest as Quinn led her into the concourse. She pointed to a table near the chalk-marked threshold. Several books lay stacked on it, their covers wrapped in brown paper. The empty space beside them was just wide enough for her satchel. “You were here,” Quinn said. “Which way were you facing?” “Toward the platform.” “Then you could see the tunnel mouth through the doors?” “A little of it.” “And no one went past you?” “No.” Quinn stood where Eva had stood. From there, she could see the body under the lights and a narrow slice of darkness beyond. She could also see the tiled recess across the tracks, beneath the WAY OUT sign. The compass needle pointed directly at it. The pale dust on the table came from a chalk stick. Its broken end lay near a jar of coins. Eva had been close enough to pick it up, close enough to refresh the line at the doors. “You drew that?” Quinn asked. “Yes.” “Before he died or after?” Eva’s lips parted. “Before.” “And the line was unbroken when he reached the platform?” “As far as I know.” Quinn went back through the doors, stopping short of the chalk. On the platform side, a faint print interrupted the curve: the heel of a boot, set partly on the line. The print pointed into the concourse. Next to it sat that single drop of blood with its tail pointing the same way. The dead man had reached the doors. He had turned back. She followed the compass needle across the platform. The recess beneath the WAY OUT sign had once held a vending machine. Its tiled back wall was stained with rust at four corners. At the bottom, a dark gap ran beneath the skirting. Quinn crouched. A current of cold air touched her face. Shah came up beside her. “Maintenance void,” he said. “We haven’t searched it yet.” “Why not?” “Locked grate at the far end. No access from this side.” “There’s air moving.” “Old stations breathe.” Quinn aimed her torch into the gap. Something pale lay just beyond it, caught against the skirting. She used a clean forceps from an officer’s kit to draw it out: a sliver of stiff card, folded once and spotted with blood. Its outer face bore a neat handwritten number. On the inside, pressed into the card, was the same fine green staining she’d seen on the dead man’s fingers. Shah leaned in. “Ticket?” “Not for a train.” “Could be from one of the stalls.” Quinn opened the fold a fraction more. A tiny square of brass foil had been fixed inside, marked with a pattern like the sigils on the compass. The card was damp, though the gap beneath the wall was dry. As she held it, the compass needle swung several degrees toward her hand, then snapped back to the recess. Shah saw it. “Was that you?” “I didn’t touch the compass.” For a moment neither of them spoke. The old indicator clicked overhead. NEXT TRAIN: 2 MIN remained lit, but one segment of the display flickered out and returned. Quinn remembered another place three years ago: a locked room, dust across the windowsill, Morris’s watch on the floor where no one had stood. She had spent months finding ordinary explanations for each piece of it. They had never fitted together. She looked back at the man on the platform. His boots were clean because he hadn’t come through the tunnel. His wound, hidden beneath an undamaged coat, had been made before the coat went on. Someone had set him down by the tunnel mouth and made him run the last few yards—or he had run them himself after being let loose. The blood near the doors said he had tried to cross the chalk line and stopped. Eva’s account began at his shout, but it did not explain where he’d been a moment earlier. “We need the coat removed carefully,” Quinn said. “Photograph every seam first. And bag his hands separately.” Shah kept his eyes on the compass. “You think he came through that wall.” “I think someone wants us looking down the tunnel.” She held up the folded card. “He came from somewhere else.” Behind them, Eva appeared in the platform doorway. She had one hand braced against the chalked frame. “You found it,” she said. Quinn lowered the card. “What is it?” Eva watched the recess. “The reason he told me to keep it shut.” A faint tapping came from behind the tiles. Three quick knocks, a pause, and two more. Shah turned toward the sound. Quinn looked at the compass. Its needle held steady on the wall. She took a step back from the recess, keeping the card in the forceps. “Clear the platform,” she said. The tapping came again. This time, from inside the dead man’s coat, something answered.
created_at"2026-09-23T16:30:52.353Z" 9/23/2026, 4:30:52 PM
model"openai/gpt-6-sol-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4285
moderation_latency(null)
generation_time57132
tokens_prompt896
tokens_completion3658
native_tokens_prompt835
native_tokens_completion3024
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"
usage0.03191
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790181052-S6XiquxWN93KcqWQpQWB"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790181052-RsPOkIG91NIHxL6nzJtA"
upstream_id"resp_037a1f52e6d86a24016ab3febc946487d18bdcb4b453faf639"
provider_responses
0
endpoint_id"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id"resp_037a1f52e6d86a24016ab3febc946487d18bdcb4b453faf639"
is_byokfalse
latency2604
model_permaslug"openai/gpt-6-sol-20260922"
provider_name"OpenAI"
status200
total_cost0.03191
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
totalTags20
adverbTagCount0
adverbTags(empty)
dialogueSentences117
tagDensity0.171
leniency0.342
rawRatio0
effectiveRatio0
91.66% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount2398
totalAiIsmAdverbs4
found
0
adverb"quickly"
count2
1
adverb"lightly"
count1
2
adverb"carefully"
count1
highlights
0"quickly"
1"lightly"
2"carefully"
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)
91.66% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount2398
totalAiIsms4
found
0
word"etched"
count1
1
word"resolved"
count1
2
word"silence"
count1
3
word"flickered"
count1
highlights
0"etched"
1"resolved"
2"silence"
3"flickered"
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
narrationSentences179
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences179
filterMatches
0"watch"
hedgeMatches
0"tried to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences276
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen30
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords2397
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions34
unquotedAttributions0
matches(empty)
0.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions72
wordCount1719
uniqueNames11
maxNameDensity1.8
worstName"Quinn"
maxWindowNameDensity5.5
worstWindowName"Eva"
discoveredNames
Harlow1
Quinn31
Camden1
English1
Detective2
Sergeant1
Malik1
Shah14
Kowalski1
Eva18
Morris1
persons
0"Harlow"
1"Quinn"
2"Sergeant"
3"Malik"
4"Shah"
5"Kowalski"
6"Eva"
7"Morris"
places
0"English"
globalScore0.598
windowScore0
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences129
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.417
wordCount2397
matches
0"not north along the tracks, but across the platform toward a tiled recess beneath an old WAY"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences276
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs144
mean16.65
std18.04
cv1.084
sampleLengths
020
159
25
35
42
54
647
718
865
911
106
112
1217
136
145
1519
166
1712
1834
193
2019
211
2211
2366
2413
2534
267
274
284
296
3036
3149
3221
334
3430
3534
365
3721
381
397
402
4119
4251
434
444
4553
4611
478
4851
499
89.58% Passive voice overuse
Target: ≤2% passive sentences
passiveCount8
totalSentences179
matches
0"been told"
1"been laid"
2"been abandoned"
3"been stripped"
4"was tucked"
5"been etched"
6"been fixed"
7"been made"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs275
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount1
semicolonCount1
flaggedSentences2
totalSentences276
ratio0.007
matches
0"Verdigris mottled the brass casing; fine marks had been etched around its face."
1"Someone had set him down by the tunnel mouth and made him run the last few yards—or he had run them himself after being let loose."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1723
adjectiveStacks0
stackExamples(empty)
adverbCount42
adverbRatio0.024376088218224026
lyAdverbCount9
lyAdverbRatio0.00522344747533372
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences276
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences276
mean8.68
std5.56
cv0.64
sampleLengths
020
117
213
329
45
55
62
74
84
922
106
1115
128
134
146
1512
1612
177
1819
195
2010
2111
226
232
2417
256
265
2717
282
296
309
313
323
3312
3413
356
363
3719
381
3911
406
4122
427
4314
4417
455
468
476
4811
4917
54.83% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.3442028985507246
totalSentences276
uniqueOpeners95
20.70% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences161
matches
0"More powder caught in the"
ratio0.006
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount36
totalSentences161
matches
0"Her shoes rang against the"
1"It had a tiny hole"
2"She left it where it"
3"she told the sergeant"
4"He glanced at her shoes"
5"It curved up each side"
6"It was no larger than"
7"They crossed onto the platform."
8"He wore a grey coat,"
9"His right hand lay open,"
10"His boots pointed toward the"
11"Its needle pointed not north"
12"His shirt had been cut,"
13"She shifted her light."
14"She rose and walked toward"
15"She turned her light back"
16"Her round glasses had slipped"
17"She had blood on the"
18"She hugged the satchel to"
19"She pointed to a table"
ratio0.224
56.27% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount130
totalSentences161
matches
0"The train indicator on the"
1"Detective Harlow Quinn stood at"
2"An officer in a paper"
3"Quinn took the stairs."
4"Her shoes rang against the"
5"Halfway down, she found a"
6"It had a tiny hole"
7"A bracelet bead, perhaps."
8"She left it where it"
9"Chalk prices marked the tabletops."
10"None of the writing Quinn"
11"she told the sergeant"
12"Detective Sergeant Malik Shah came"
13"He glanced at her shoes"
14"Quinn looked down."
15"A pale line ran across"
16"It curved up each side"
17"Someone had drawn it with"
18"Shah led her past the"
19"Another displayed little bottles packed"
ratio0.807
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences161
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences78
technicalSentenceCount1
matches
0"Damp rose from the abandoned station beneath Camden, along with a sweet, medicinal smell that caught in the back of her throat."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags20
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags16
fancyCount0
fancyTags(empty)
dialogueSentences117
tagDensity0.137
leniency0.274
rawRatio0
effectiveRatio0
86.8236%