Run: 2026-07-09-01KX40GF79SRB6TTJXTFHFQ434

Run Details

Duration:
17.6s
Cost:
$0.016855
Provider:
OpenAI

Model input

System
You are an expert fiction writer. Always keep the following rules in mind: - Write in past tense and use General English spelling, grammar, and colloquialisms/slang. - Write in active voice - Always follow the "show, don't tell" principle. - Avoid adverbs and cliches and overused/commonly used phrases. Aim for fresh and original descriptions. - Convey events and story through dialogue. - Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. - Skip "he/she said said" dialogue tags and convey people's actions or face expressions through their speech - Avoid mushy dialog and descriptions, have dialogue always continue the action, never stall or add unnecessary fluff. Vary the descriptions to not repeat yourself. - Put dialogue on its own paragraph to separate scene and action. - Reduce indicators of uncertainty like "trying" or "maybe" When writing text: - NEVER conclude the scene on your own, follow the beat instructions very closely. - NEVER end with foreshadowing. - NEVER write further than what I prompt you with. - AVOID imagining possible endings, NEVER deviate from the instructions. - STOP EARLY if the continuation contains what was required in the instructions. You do not need to fill out the full amount of words possible.
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <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> Continue the story using the following instructions: <instructions> 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. </instructions>

Model response

AI
Rain slicked the iron steps beneath Camden High Street, turning the entrance to the abandoned Tube station into a black slit in the pavement. Detective Harlow Quinn descended without touching the walls. Her boots struck each step in the same measured rhythm. Behind her, Detective Constable Martin Bell breathed through his mouth. “Charming place,” he muttered. “You’d think the Met would have found a use for it.” “The Met sealed it in 1987.” “Then someone unsealed it.” Quinn reached the bottom and stopped beneath the dead station sign. CAMDEN HIGH LEVEL flaked across the tiles in chipped white letters. Water dripped through the ceiling. The station smelled of rust, wet concrete, and something sweet beneath it all—a scent like bruised apples left in a cupboard. Bell came down beside her, one hand resting on the butt of his service pistol. “Uniforms found the door open at twenty-two fourteen,” he said. “No sign of forced entry. They heard shouting from the platform, came down, found the victim. Paramedics confirmed death at twenty-two twenty-six.” “Who called it in?” “Anonymous caller. Male voice. He gave the station and hung up.” “Witnesses?” “One of the market traders. Name’s Eva Kowalski. She was with the body when the uniforms arrived.” Quinn looked at him. “She was with the body?” “Not touching it. That’s what she says.” “Where is she?” “Platform.” Quinn took two steps towards the tunnel. Bell caught her sleeve. “Before we go down there, you’ll want to see the door.” He led her back to a narrow service entrance set beside the ticket hall. Yellow police tape hung across the opening. The padlock lay on the floor, its shackle unbroken. Quinn crouched. Her leather watch pressed against the underside of her wrist. She examined the lock without touching it. Dust coated the concrete beneath the door, except for one clean crescent where something had rested. “Key used,” she said. Bell nodded. “That was my reading.” “Your reading?” “Someone with access opened it, entered, then left through the platform tunnels. The lock was dropped in a hurry. The victim’s killer probably knew the place.” “The lock didn’t fall.” “It’s on the floor.” “Look at the dust.” Bell leaned closer. “A circular mark.” “Not circular. Half a circle. The lock was placed there.” “Placed?” “The dust stops at the edge. If it had fallen, grit would have scattered. Someone set it down.” Bell glanced into the darkness beyond the tape. “Why?” Quinn stood. “To make us think they dropped it.” “That seems like a lot of effort for a padlock.” “Most people don’t stage evidence because they’re tired.” Bell gave her a thin smile. “You think we’re looking at theatre.” “I think the scene began before the body arrived.” They passed through the ticket hall. Old adverts lined the walls: holiday resorts, cigarette brands, a political campaign whose candidate had died before the station closed. The floor tiles shone with moisture. At the far end, a stairwell sank towards the platforms. Two uniforms waited at the bottom. One lifted the tape for Quinn. The other stared at the tracks, white-faced. “Detective,” he said. Quinn walked past him. The platform stretched beneath a vaulted ceiling, its lamps dead and its walls veined with damp. The crime-scene team had set up portable lights around the body. Their glare broke across the rails and sent hard shadows into the mouth of the tunnel. A man lay on his back beside the platform edge. He wore a charcoal suit, no coat, no shoes. His throat had been cut from left to right. Blood covered his collar and pooled beneath his head. Eva Kowalski stood beyond the cordon with her leather satchel clutched against her ribs. Her curly red hair had escaped its pins, and rain darkened the shoulders of her green coat. Round glasses magnified her green eyes. She tucked a strand behind her left ear. Quinn approached the body. “Name?” she asked. “Gideon Vale,” Bell replied. “Forty-eight. Antiquities dealer. He had a stall in the market.” “What market?” Bell shifted his weight. “An unlicensed one.” Eva’s fingers tightened around the satchel strap. Quinn looked from him to her. “You called it a market.” “That’s what people call it,” Eva said. “People who sell stolen antiquities?” “People who sell things you won’t find in a shop.” Bell pointed at the corpse. “Mr Vale dealt in rare books, artefacts, old coins. The usual underground rubbish.” Eva pushed her glasses higher. “He sold information.” Bell snorted. “There’s no category for that on the crime report.” “There should be.” Quinn crouched near the body. Vale’s right hand lay open, palm up. His left fist clenched around a tuft of black fibres. “Those came from the killer?” Bell asked. “Could have.” The fibres were short, glossy, and twisted like horsehair. No jacket seam nearby matched them. Quinn leaned over the neck wound. The cut ran cleanly across the throat, but the blood pattern did not. The pool beneath Vale’s head had spread in a neat oval. No spray marked the wall. No droplets stained the platform beyond his shoulder. The collar had absorbed blood, yet the shirt beneath remained almost dry. Bell crouched beside her. “Single slash,” he said. “Killer stood behind him, dragged the blade across, then let him fall backwards.” “Then why is the back of his head dry?” Bell frowned. “The blood stayed in the collar.” “Blood doesn’t obey a collar.” “It can clot.” “Not in the first minutes.” She pointed to the platform tiles. “The body fell here, according to the marks?” “According to the marks, yes.” “Then he bled here.” Bell looked at the blood. “He did.” Quinn lifted her gaze to the tunnel. “Where’s the blood trail?” “There isn’t one.” “Where’s the arterial spray?” Bell’s mouth tightened. “You’re suggesting he was killed somewhere else.” “No. I’m suggesting the blood arrived after him.” He stared at her. Quinn moved around the body. Vale’s suit trousers were soaked at the knees, but the fabric above them remained dry. One trouser cuff had collected pale grit. His bare feet showed no cuts, no bruises, no dirt between the toes. “Where are his shoes?” she asked. “None found,” Bell said. “Could be part of the market ritual. They remove footwear before entering.” Eva looked towards the tunnel. “Not a ritual,” she said. Bell turned on her. “You’ve been waiting all night to say that.” “Vale wouldn’t remove his shoes. He hated the platform tiles. He wore custom Italian leather.” “You knew him?” “I knew his stock.” “You were found kneeling beside him.” “I was checking whether he still had a pulse.” “With two fingers on his neck?” Eva’s hand went to her hair again. “That’s where I checked.” Quinn examined Eva’s coat. The hem carried wet grey dust. Her satchel had a smear of black along the bottom corner, though no fresh blood marked it. “What brought you here?” Quinn asked. “Vale sent me a message.” “Show me.” Eva withdrew her phone. The screen displayed a text from an unknown number. BRING THE BOOK. PLATFORM FOUR. COME ALONE. Quinn read the timestamp. Twenty-one fifty-seven. “What book?” Eva hesitated. Bell crossed his arms. “The one she’s carrying.” Quinn nodded towards the satchel. Eva opened it and pulled out a wrapped volume. Its leather cover had split along the spine. Brass clasps held the pages shut. Symbols had been burned into the front: a circle bisected by three lines. “An occult text,” Bell said. “An archive catalogue,” Eva replied. “Of course.” Quinn held out her hand. Eva gave her the book. It weighed more than it looked. Damp had not touched the cover. Quinn sniffed the leather. It carried the same sweet scent that hung in the station. “Where did you get it?” “Restricted archives.” “That wasn’t my question.” Eva’s green eyes met hers. “It belonged to the British Museum.” “Then why did Vale want it?” “He believed it described a breach.” Bell rubbed his forehead. “A breach.” “A doorway,” Eva said. “Between places.” “Like a tunnel?” “Not like a tunnel.” Quinn opened the book. The pages held dense columns of handwritten Latin, diagrams, and cramped notes in several inks. A loose sheet slipped from the centre and landed beside Vale’s bloodstained hand. She picked it up with a gloved finger. The paper had no fibres at its torn edge. It looked burned rather than ripped. A line of writing crossed the page in black ink. THE MARKET MOVES WHEN THE MOON TURNS. Bell read over her shoulder. “Some sort of threat?” Eva’s face lost colour. “That’s not a threat.” “What is it, then?” “A schedule.” Quinn folded the paper into an evidence sleeve. “What market moves?” Eva glanced at the dark tunnel. “The Veil Market.” Bell made a frustrated sound. “There is no Veil Market.” “You’re standing in it.” “The station’s been abandoned for decades.” “Not by everyone.” Quinn turned back to the corpse. A forensic officer approached from the far side of the cordon, carrying a clear plastic tray. “Detective,” she called. “We found something under the victim.” She set the tray down. Inside lay a small brass compass mottled with green verdigris. Protective sigils covered the face. Its needle spun in tight, frantic circles. Bell leaned over it. “Broken?” Quinn reached for her notebook. The needle stopped. It pointed past her shoulder, towards the blank tiled wall behind the platform. She looked at the wall. No door. No crack. No visible opening. Only damp tiles and a faded advertisement for a seaside hotel. The compass needle trembled once, then held steady. Eva whispered, “That wasn’t there before.” Bell turned towards her. “What wasn’t?” Quinn stepped closer to the tiles. The wall occupied the space behind the body, untouched by blood. Yet a thin line of moisture ran from ceiling to floor, marking a rectangle no wider than a man’s shoulders. She raised her torch. The beam caught a brass ring set into the grout. The ring had no shadow. Quinn slid her fingertip along the tile above it. Cold pressed through her glove—not the cold of stone, but a depth that reached past it. Bell drew his weapon. “Stand back.” Quinn ignored him. She placed the compass on the platform. Its needle remained fixed on the ring. “Detective,” Bell warned. “Look at the blood.” He glanced at the body. “What about it?” “Vale’s blood didn’t spread from his neck.” She pointed to the pool. The oval edge stopped three inches from the platform lip, as clean as a line drawn with a ruler. Between the blood and the tracks, the tiles stayed dry. Bell crouched, then reached towards the boundary. “Don’t touch it.” He withdrew his hand. Quinn scanned the pool again. A narrow channel ran through the blood from Vale’s shoulder to the wall. It was too straight for a body falling. Too shallow for a trail. At its end, the liquid vanished beneath the grout. She followed it with her torch. The brass ring clicked. Somewhere behind the tiled wall, a lock turned.
created_at"2026-07-09T17:58:47.327Z" 7/9/2026, 5:58:47 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2838
moderation_latency(null)
generation_time17037
tokens_prompt1149
tokens_completion3206
native_tokens_prompt1009
native_tokens_completion2641
native_tokens_completion_images0
native_tokens_reasoning190
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"
usage0.016855
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0ba78d308c9c1abd016a4fe15768108190a2c42f3958f5c17a"
is_byokfalse
latency697
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-1783619927-gY5JDu80ZDtQsa6k58oU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619927-20ICW5N8apTRsQQuT59F"
upstream_id"resp_0ba78d308c9c1abd016a4fe15768108190a2c42f3958f5c17a"
total_cost0.016855
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
totalTags19
adverbTagCount0
adverbTags(empty)
dialogueSentences116
tagDensity0.164
leniency0.328
rawRatio0
effectiveRatio0
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1837
totalAiIsmAdverbs0
found(empty)
highlights(empty)
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)
86.39% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1837
totalAiIsms5
found
0
word"measured"
count1
1
word"weight"
count1
2
word"pulse"
count1
3
word"trembled"
count1
4
word"scanned"
count1
highlights
0"measured"
1"weight"
2"pulse"
3"trembled"
4"scanned"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"jaw/fists clenched"
count1
highlights
0"fist clenched"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences175
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences175
filterMatches
0"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences272
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen26
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1835
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions22
unquotedAttributions0
matches(empty)
0.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions89
wordCount1221
uniqueNames14
maxNameDensity2.29
worstName"Quinn"
maxWindowNameDensity5
worstWindowName"Eva"
discoveredNames
Camden1
High1
Street1
Tube1
Harlow1
Quinn28
Detective2
Constable1
Martin1
Bell28
Kowalski1
Vale5
Eva17
Latin1
persons
0"Harlow"
1"Quinn"
2"Constable"
3"Martin"
4"Bell"
5"Kowalski"
6"Vale"
7"Eva"
places
0"Camden"
1"High"
2"Street"
globalScore0.353
windowScore0
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences94
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.545
wordCount1835
matches
0"not the cold of stone, but a depth"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences272
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs170
mean10.79
std10.71
cv0.992
sampleLengths
032
120
215
36
44
548
615
732
84
911
101
1117
124
135
147
153
161
1711
1811
1930
2035
214
226
232
2426
254
264
274
286
2910
301
3118
328
331
349
3510
368
3712
389
3942
4019
413
424
4343
4437
4545
464
473
4814
492
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences175
matches
0"were soaked"
1"been burned"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs222
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount2
semicolonCount0
flaggedSentences2
totalSentences272
ratio0.007
matches
0"The station smelled of rust, wet concrete, and something sweet beneath it all—a scent like bruised apples left in a cupboard."
1"Cold pressed through her glove—not the cold of stone, but a depth that reached past it."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1227
adjectiveStacks0
stackExamples(empty)
adverbCount19
adverbRatio0.015484922575387123
lyAdverbCount3
lyAdverbRatio0.0024449877750611247
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences272
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences272
mean6.75
std4.36
cv0.647
sampleLengths
024
18
210
310
44
511
66
74
811
911
105
1121
1215
1310
1422
154
1611
171
1817
194
205
217
223
231
247
254
2611
2714
287
299
302
3110
327
3316
344
352
364
372
3826
394
404
414
423
433
4410
451
4618
478
481
492
49.63% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats10
diversityRatio0.31985294117647056
totalSentences272
uniqueOpeners87
68.97% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences145
matches
0"Only damp tiles and a"
1"Too shallow for a trail."
2"Somewhere behind the tiled wall,"
ratio0.021
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount32
totalSentences145
matches
0"Her boots struck each step"
1"He led her back to"
2"Her leather watch pressed against"
3"She examined the lock without"
4"They passed through the ticket"
5"Their glare broke across the"
6"He wore a charcoal suit,"
7"His throat had been cut"
8"Her curly red hair had"
9"She tucked a strand behind"
10"His left fist clenched around"
11"She pointed to the platform"
12"He stared at her."
13"His bare feet showed no"
14"Her satchel had a smear"
15"Its leather cover had split"
16"It weighed more than it"
17"It carried the same sweet"
18"She picked it up with"
19"It looked burned rather than"
ratio0.221
39.31% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount122
totalSentences145
matches
0"Rain slicked the iron steps"
1"Detective Harlow Quinn descended without"
2"Her boots struck each step"
3"Quinn reached the bottom and"
4"CAMDEN HIGH LEVEL flaked across"
5"Water dripped through the ceiling."
6"The station smelled of rust,"
7"Bell came down beside her,"
8"Quinn looked at him."
9"Quinn took two steps towards"
10"Bell caught her sleeve."
11"He led her back to"
12"The padlock lay on the"
13"Her leather watch pressed against"
14"She examined the lock without"
15"Dust coated the concrete beneath"
16"Bell leaned closer."
17"Bell glanced into the darkness"
18"Bell gave her a thin"
19"They passed through the ticket"
ratio0.841
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences145
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences41
technicalSentenceCount0
matches(empty)
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
totalTags19
fancyCount3
fancyTags
0"he muttered (mutter)"
1"Eva whispered (whisper)"
2"Bell warned (warn)"
dialogueSentences116
tagDensity0.164
leniency0.328
rawRatio0.158
effectiveRatio0.052
88.1433%