Run: 2026-09-23-01M36R7NVGE1B19ZV807F61AX8

Run Details

Duration:
1m 47s
Cost:
$0.004324
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 bone token was warm from Detective Quinn’s palm when the station swallowed them. Behind the abandoned ticket hall, the stairs dropped beneath Camden in a tight turn, past flaking Underground tiles and a sign for a line that had never run. The air changed halfway down: damp iron, candle smoke, something sweet and medicinal. Beyond the last arch, the Veil Market occupied the old platform in a disorderly sprawl of awnings and lanterns. A woman sold glass jars from a suitcase. A man in a silver mask weighed black seeds against coins. No trains had passed here in decades, but the rails gleamed as if polished that morning. Tonight, the market had gone quiet around a strip of police cordon. Quinn ducked beneath it. Her worn leather watch pressed against her left wrist as she checked the time. 1:26. Her steps found the dry places between the scattered puddles. Military precision, Bell called it when he meant that she was being difficult. The dead man lay inside the old ticket inspector’s office. Someone had pushed the desk against one wall and covered it with black cloth. Now the cloth hung crooked, one corner dipping into a pool of blood. The body sat on the floor beneath it, back against the wall, legs stretched out. A narrow puncture marked the front of his shirt. His face had settled into the fixed, offended look of a man interrupted while speaking. “Rufus Vale,” said Detective Sergeant Bell. He stood beside the open door, broad shoulders crowding the narrow frame. “Market information broker. Or so I’m told. Found by the stallholders when they came in. Door bolted from the inside.” “Who found him?” “Two traders. One’s still here. One claims he never knew Vale.” Bell lowered his voice. “They all claim that.” Quinn looked past him. On the other side of the platform, the traders watched from under their awnings. No one met her eyes for long. A few had gone back to packing their goods, though their hands moved slowly. The market would move again at the next full moon. For tonight, the dead man had made this place hold still. “Any witnesses hear anything?” she asked. “A thump. Somewhere around midnight, according to one. Then nothing. No one saw anyone leave the office. There’s no other entrance, unless you count the service tunnel at the far end.” “And?” “Blocked solid. Has been for years.” Bell nodded toward the body. “There are stories about a way through the wall. Portal, rift, whatever word the sellers prefer. A clean escape would explain the lack of tracks.” Quinn gave him a level look. “It might explain anything, if we let it.” Bell’s mouth tightened. He had been on enough cases with her to know what came next: photographs first, assumptions later. “Don’t touch the door,” she said. “I haven’t.” A young constable near the threshold shifted his weight. Quinn caught the faint scuff of his boot and glanced at him. He stopped moving. She entered. The room smelled of copper, cold stone and the sour trace of old tobacco. A forensic photographer lifted his camera. Quinn waited for the flash, then took in the details without stepping past the blood. The knife lay on the floor beyond the body’s right hand. Its handle was dark wood, its blade broad and triangular. No red on it. No smears. Not even a rusty stain. “Found there?” she asked. “Just as you see it,” Bell said. “And the wound?” “Single stab. The medic’s preliminary opinion is that it went between the ribs and struck the heart.” Quinn crouched, careful to keep her coat clear of the pool. The man’s shirt was dark, and the hole in it nearly disappeared among the folds. It was no wider than her little finger. She studied the knife again. A blade that broad would have left a different cut. Wider. Less neat. “Was the knife tested?” “On the way.” “Good.” Bell leaned against the doorframe. “He was in the middle of a deal. Someone came in, they argued, he got stabbed. The killer walked out. Then the door was bolted from inside by whatever this place does to doors.” “Nothing in this room has done anything to that door.” Quinn moved her gaze from the knife to the body. Vale’s right hand was curled around a small brass compass. Verdigris darkened the casing, and tight lines had been etched into its face. The needle pointed away from the door, toward the wall behind the desk. A red-haired woman waited outside the office, a worn leather satchel hanging from one shoulder. Round glasses magnified her green eyes. She pushed a curl behind her left ear. “Eva,” Quinn said. “What do you make of it?” Eva stepped only as far as the threshold. “If it’s genuine, it isn’t for finding north.” Bell made a small sound. “That’s reassuring.” “It’s a Veil Compass,” Eva said, ignoring him. “They’re made to find the nearest supernatural rift or portal. The sigils are meant to keep the needle from being thrown off by ordinary magnetic fields.” “So it points to a hole in the world,” Bell said. “It points to a rift,” Eva said. “That isn’t the same as telling you who used it or when.” Quinn looked from the brass face to the wall. The tiled surface behind the desk appeared unbroken. A faded advertisement for soap curled at one edge, its printed woman still smiling up at the ceiling. Nothing about the wall suggested an exit. Nothing about the compass suggested an ordinary crime-scene object either. “Photograph it where it is,” Quinn told the photographer. “Then we bag it.” Bell exhaled through his nose. “You’re considering the portal.” “I’m considering the evidence.” She stood and looked at the door. The bolt was low on the inside, an iron bar set into two brackets. A plain, old-fashioned fixture; the sort used when a lock was too dear or too likely to jam. It sat in its receiver, holding the door closed. The bolt’s handle was a rounded iron nub, rubbed smooth by years of use. Quinn crouched again, this time in the doorway. A thin stripe of grey dust lay along the stone at the threshold. Near the latch side, the line broke. She leaned closer. There, on the underside of the door, was a fresh bright scrape in the old grime. “Bell, what did the first officers do when they found the door?” “Checked it, then forced it. The bolt was in place. They had to break the frame.” “Before they forced it, did anyone try the door?” “Of course.” “Did they push or pull?” Bell paused. “Both, I expect.” Quinn looked at the bolt’s exposed end. A second bright mark scored the iron, narrow and recent. She straightened. “Get me a scale and a flexible evidence tool,” she said. Bell nodded to the constable. The young man returned with a kit. Quinn asked the photographer to record the latch, the scrape, and the floor beneath the threshold. She waited for each image to be taken, then selected a slim plastic probe. “Watch the door,” she said. She lowered herself to one knee and slid the probe beneath it. The gap was narrow but enough. The tip met the iron nub. Quinn eased the tool sideways, searching for purchase, then hooked it around the bolt handle. The bolt shifted with a dry scrape. Bell stared down at her. “You can throw it from outside.” “Not easily. Not without knowing where to catch it. But yes.” She pulled the probe back. The bolt remained in its receiver. “Someone could have entered the room, killed him, left, then closed the door and slid the bolt across from the platform,” she said. “The room was never locked from inside. It was made to look that way.” Bell crouched beside her. “That’s your theory?” “That’s what the marks support. We’ll test the tool against the scrape. We’ll check the underside for residue. We’ll find out whether that gap has been widened recently.” She stood. “The killer didn’t need a portal to leave.” Bell rubbed a hand over his jaw. “Unless he wanted us to think he did.” “Now you’re asking a useful question.” Eva had bent her head toward the compass without crossing the line. “There’s something else.” Quinn followed her gaze. The needle was still aimed at the tiled wall. Bell leaned around the desk, trying to see its face. “It could be a trick,” he said. “A magnet hidden in the wall.” “Then we’ll find the magnet,” Quinn replied. “Quinn.” Eva’s voice had lost its academic caution. “The needle isn’t stuck. It moved when you came in.” Quinn glanced at the brass face. She remembered the needle pointing toward the wall before they had tested the bolt. It had not wandered. The thought came with the weight of a door opening onto a dark room: small, unwelcome, and impossible to shut away. “Could the compass have been turned?” Bell asked. “Not if it’s genuine,” Eva said. “The needle follows the nearest rift. You can rotate the casing and it’ll still pull in the same direction.” Quinn stepped nearer the desk. The photographer had finished his shots. She leaned over the compass, not touching it. From this angle, the needle’s point aligned with a seam between two tiles, a vertical crack so fine it could have been a flaw in the grout. The crack was clean. The tiles around it wore a layer of dust, but the seam held none. She straightened. “Bag the compass. Carefully. Get a full set of measurements on that wall. Check the plans for any service space behind it.” Bell looked at her. “You think the killer went through the wall after all?” “I think the knife didn’t make that wound, and the bolt didn’t lock itself. Those are facts. I don’t know what the compass is telling us yet.” The answer sounded sensible. It did not feel like enough. For three years, the blank space around DS Morris’s last case had followed her from one report to the next. No witness, no proper timeline, no explanation that survived contact with the evidence. Quinn had built her career on what could be recorded and checked. She had not learned to trust what could not. The wall offered nothing but old tile and the faint smell of wet stone. She looked at Vale’s dead face, then at the knife that had been left too neatly beyond his reach. Whoever had staged the locked room had expected the door to become the mystery. They had expected the market’s stories to do the rest. Quinn turned to Bell. “Find everyone who knew Vale was meeting someone tonight. Start with the traders who found him. No one leaves the platform without giving us a name.” Bell’s attention returned to the corpse. “And the portal?” Quinn glanced at the clean seam in the wall. The needle in the bagging tray twitched toward it, though no one had moved the compass. “Keep the room sealed,” she said. “We’ll see which mystery breaks first.”
created_at"2026-09-23T09:06:04.794Z" 9/23/2026, 9:06:04 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16102
moderation_latency(null)
generation_time107005
tokens_prompt896
tokens_completion3209
native_tokens_prompt835
native_tokens_completion8481
native_tokens_completion_images0
native_tokens_reasoning6133
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"
usage0.004324
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790154364-KghhaWLVL38rh7SNpLGr"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790154364-YTZNnw9Z0UuBjvEeaJ2d"
upstream_id"resp_0c74abc0849bc66d016ab3967cf41487d1aeba6ba553c91b73"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0c74abc0849bc66d016ab3967cf41487d1aeba6ba553c91b73"
is_byokfalse
latency806
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.004324
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
totalTags21
adverbTagCount0
adverbTags(empty)
dialogueSentences68
tagDensity0.309
leniency0.618
rawRatio0
effectiveRatio0
94.61% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1854
totalAiIsmAdverbs2
found
0
adverb"slowly"
count1
1
adverb"carefully"
count1
highlights
0"slowly"
1"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)
86.52% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1854
totalAiIsms5
found
0
word"weight"
count2
1
word"etched"
count1
2
word"magnetic"
count1
3
word"aligned"
count1
highlights
0"weight"
1"etched"
2"magnetic"
3"aligned"
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
narrationSentences144
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount0
narrationSentences144
filterMatches
0"watch"
1"look"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences190
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen34
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1854
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions25
unquotedAttributions1
matches
0"Military precision, Bell called it when he meant that she was being difficult."
61.50% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions58
wordCount1243
uniqueNames11
maxNameDensity1.77
worstName"Quinn"
maxWindowNameDensity3
worstWindowName"Quinn"
discoveredNames
Detective2
Quinn22
Camden1
Underground1
Veil1
Market1
Bell20
Sergeant1
Eva6
Morris1
Vale2
persons
0"Detective"
1"Quinn"
2"Underground"
3"Market"
4"Bell"
5"Sergeant"
6"Eva"
7"Morris"
8"Vale"
places(empty)
globalScore0.615
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences93
glossingSentenceCount1
matches
0"appeared unbroken"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1854
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences190
matches
0"polished that morning"
1"meant that she"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs86
mean21.56
std18.13
cv0.841
sampleLengths
014
195
212
342
410
566
638
73
819
960
106
1131
121
1336
1414
1520
166
172
1824
1937
2032
214
227
233
2417
2552
264
273
281
2939
3010
3146
3229
339
3416
357
3634
3711
3819
3952
4013
419
424
4362
4447
4512
4616
479
482
495
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences144
matches
0"was curled"
1"been etched"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs208
matches
0"was being"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount1
flaggedSentences1
totalSentences190
ratio0.005
matches
0"A plain, old-fashioned fixture; the sort used when a lock was too dear or too likely to jam."
94.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1246
adjectiveStacks1
stackExamples
0"plain, old-fashioned fixture;"
adverbCount23
adverbRatio0.018459069020866775
lyAdverbCount6
lyAdverbRatio0.004815409309791332
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences190
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences190
mean9.76
std6.33
cv0.649
sampleLengths
014
128
213
319
48
511
616
712
84
914
101
1110
1213
1310
1414
1513
1615
179
1815
196
2012
2120
223
2315
244
254
2614
277
2814
2910
3011
316
3231
331
3411
3525
366
378
383
3917
406
412
429
4312
443
452
4614
476
4815
4911
54.50% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.3492063492063492
totalSentences189
uniqueOpeners66
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences120
matches(empty)
ratio0
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount23
totalSentences120
matches
0"Her worn leather watch pressed"
1"Her steps found the dry"
2"His face had settled into"
3"He stood beside the open"
4"He had been on enough"
5"He stopped moving."
6"Its handle was dark wood,"
7"It was no wider than"
8"She studied the knife again."
9"She pushed a curl behind"
10"She stood and looked at"
11"It sat in its receiver,"
12"She leaned closer."
13"She waited for each image"
14"She lowered herself to one"
15"She pulled the probe back."
16"She remembered the needle pointing"
17"It had not wandered."
18"She leaned over the compass,"
19"It did not feel like"
ratio0.192
30.83% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount103
totalSentences120
matches
0"The bone token was warm"
1"The air changed halfway down:"
2"A woman sold glass jars"
3"A man in a silver"
4"Tonight, the market had gone"
5"Quinn ducked beneath it."
6"Her worn leather watch pressed"
7"Her steps found the dry"
8"Military precision, Bell called it"
9"The dead man lay inside"
10"Someone had pushed the desk"
11"The body sat on the"
12"A narrow puncture marked the"
13"His face had settled into"
14"He stood beside the open"
15"Bell lowered his voice"
16"Quinn looked past him."
17"The market would move again"
18"Bell nodded toward the body"
19"Quinn gave him a level"
ratio0.858
83.33% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences120
matches
0"Now the cloth hung crooked,"
1"Whoever had staged the locked"
ratio0.017
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences60
technicalSentenceCount1
matches
0"Behind the abandoned ticket hall, the stairs dropped beneath Camden in a tight turn, past flaking Underground tiles and a sign for a line that had never run."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags21
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags17
fancyCount0
fancyTags(empty)
dialogueSentences68
tagDensity0.25
leniency0.5
rawRatio0
effectiveRatio0
90.1763%