Run: 2026-07-09-01KX417GHEVJ04MXYEZEE3JX8G

Run Details

Duration:
35.7s
Cost:
$0.040473
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
The old Tube station had no name left on its walls. Water had stripped the enamel signs down to pale scars. Tiles lay broken across the platform, their edges buried under paper charms, fish bones, and a crushed velvet glove. The tracks ended beneath a brick fall, but the tunnel beyond the rubble breathed cold air into the station in slow, damp gusts. Detective Harlow Quinn stepped through the iron gate and held up her warrant card for nobody in particular. Two uniforms stood beside a yellow evidence tent pitched near the abandoned ticket office. Neither wore Metropolitan Police issue boots. Their soles looked too thin for the puddles and broken glass. One of them pointed down the platform. “Scene’s over there, ma’am. Sergeant Baines is waiting.” Quinn looked at the gate’s lock. A chain wrapped through the bars, rusted enough to crumble under a thumb. The padlock hung open, its shackle clean and bright. “Who opened this?” The constable blinked. “Market security, apparently.” “Apparently?” “They cleared out before we arrived.” “Get names.” “We asked.” Quinn turned her sharp jaw towards him. “You asked poorly, then.” The man reached for his radio. Quinn walked on. Her leather watch had stopped at 2:17. The second hand trembled between marks, twitching without moving forward. She tapped the glass with one nail. Nothing changed. At the edge of the evidence tent, Sergeant Baines crouched beside a body. He had taken off his jacket and rolled his sleeves to the elbow. His tie hung loose, stained with something black. He looked up. “Thought you were on leave.” “I was eating toast when Control told me there was a murder under Camden.” “Control didn’t tell you it was the Veil Market?” “They said an unlicensed gathering in a disused station.” Baines gave a humourless little laugh. “Same thing, depending who you ask.” The dead man lay on his back between the platform edge and a stall made of stacked railway crates. He wore a green velvet coat buttoned to the throat and rings on every finger. His skin had the grey, waxy cast of a body left too long in the cold, though blood still shone wet beneath his collar. His mouth had been sewn shut with silver thread. The thread ran through his lips in neat, close stitches. At the corners, it cut deep enough to expose teeth. Quinn stopped. “Name?” “Silas Vane. Fifty-two, known fence, broker, thief, part-time prophet. He sold things to people who didn’t want receipts. Market regulars identified him.” “Cause?” Baines pointed to a narrow puncture below Vane’s left ear. “Blade, we think. Went in deep. No weapon yet. The stitching was done after death.” “Who found him?” “A woman called Eva Kowalski.” At the name, Quinn looked past the body. Eva sat on an upturned crate beneath the cracked station clock. Her curly red hair spilled from beneath a knitted cap, and her round glasses had fogged at the edges. A worn leather satchel rested against her boots. She held both hands around a paper cup, though no steam rose from it. Quinn had seen the woman’s name on reports before. Not as a suspect. Not formally. Always at the edge of something that went wrong: private collections broken into, stolen manuscripts recovered without clear provenance, a fire at a shuttered bookshop in Bloomsbury. Eva caught Quinn watching and tucked a curl behind her left ear. “Detective.” “Kowalski.” “You remembered me.” “I remembered the paperwork.” Eva’s green eyes moved to the body. “Silas didn’t belong here.” “Most murder victims don’t.” “No. I mean he didn’t come to trade.” Quinn glanced at Baines. “Has she given a statement?” “Bits of one.” “Then I’ll get the rest.” She crouched beside Vane. The platform smelled of wet brick, old metal, and incense burned over something rotten. Vane’s right hand curled around a brass compass no larger than a pocket watch. Verdigris crusted the rim. Protective sigils circled the face, etched so fine they looked like scratches until Quinn leaned close. The needle spun in jerks, ticking against the glass. “Bag that separately,” she told the scene officer. The officer hesitated. “Careful with it. Don’t touch the face.” Quinn lifted her eyes. “Why?” “The market people warned us. Said it bites.” “Does it?” “I didn’t ask.” “Then don’t repeat nonsense as fact.” The officer bent over the compass with tweezers. Quinn studied the dead man’s coat. Its velvet had been brushed flat along the shoulders and chest, as if someone had gripped him from behind and dragged both hands down his body. No tear. No splash of blood except the dark line at his collar. His left cuff had a smear of pale blue dust. She rubbed a gloved fingertip over it, then held it beneath the torch beam. The powder caught the light with a faint metallic shine. “Baines. What’s this?” “Market rubbish. You’ll find worse on the floor.” “Not on him. It’s on one cuff.” “He had a stall. People touched him.” Quinn looked around. Vane’s crates displayed no merchandise. A handwritten sign lay face-down in a puddle. One glass cabinet stood open and empty, its lock snapped cleanly through. The brass hasp lay beside it. “Was anything taken?” “Everyone says no.” “Everyone?” “The stallholders. They claimed Vane came in with a case, put it in the cabinet, then started shouting at a customer. Next thing, he was dead.” “They saw the killing?” “Not one of them saw the blade.” “That’s convenient.” “It’s a market for people who deal in curses and bottled nightmares. Convenient is their business model.” Quinn leaned towards the body again. The knife wound sat low and behind the ear, angled upwards. The killer had stood close, almost chest to back. They had needed a steady hand and enough height to reach the spot without forcing Vane down. Vane stood at least six feet, judging from the length of him. Quinn looked at Baines. “Any sign of a struggle?” “None.” “Then he knew whoever got behind him.” “Or he was drugged.” “Test for it.” “Already called it in.” Quinn nodded once. Her gaze travelled from Vane’s left cuff to the empty cabinet. No broken glass. No scattered wares. No overturned crates. The cabinet had been opened with intent, not panic. A murder with no struggle. A locked display opened. A body posed in full view of a market that claimed not to see. The station clock above Eva showed 2:17. Quinn checked her watch again. Its hands still showed 2:17. “Baines.” He followed her eyes. “Clock stopped years ago.” “So did mine.” He lifted his wrist. His digital watch read 03:42. “Battery’s fine.” Quinn stood. “Who called it in?” “Anonymous phone box on Camden High Street. Call came through at 03:08.” “Time of death?” “Pathologist hasn’t committed. Body’s cold, but not cold enough for the way he looks. Could be an hour. Could be longer.” Quinn’s mouth tightened. “Nothing about this place gets to alter time.” Baines rubbed a thumb over the black stain on his sleeve. “Right. We’ll put that in the report.” “You’ll put down that the victim may have been moved.” “What?” “Look at the blood.” He looked. “There’s blood.” “There’s a wound in the neck. There should be more.” The blood beneath Vane’s collar had soaked into the velvet in a narrow fan, but the platform tiles under his head held only a few drops. Quinn pointed to a dark crescent beneath the dead man’s right shoulder. “He bled somewhere else. Someone carried him here after the wound stopped pumping.” “Why move him into the middle of a public platform?” “To make him found.” Baines stared at the body, then at the open cabinet. “So the display matters.” “It mattered to the killer.” Quinn crossed to it. The cabinet smelled of cedar and sharp mineral dust. A rectangle had been wiped clean from the red felt lining. It measured roughly the length of a book, but too narrow for one. At the back sat a small black feather, stiff as lacquer. Quinn did not touch it. “Photograph this. Then bag the feather.” Baines joined her. “That’s not from a bird I know.” “You collect feathers now?” “I grew up near a farm. We had chickens.” “This wasn’t a chicken.” “No argument there.” Quinn watched the scene officer photograph the cabinet. The compass needle, still held in tweezers above an evidence bag, snapped east with a hard click. The officer flinched and nearly dropped it. Quinn turned towards the eastern tunnel. A service door sat beyond the old advertising boards. It had been painted the same brown as the brickwork, but someone had scraped a handprint through the grime. Blue dust marked the edge around the latch. She walked to it. “Quinn,” Baines called. “Forensics haven’t cleared that side.” “Then they can clear it behind me.” The door stood ajar. Cold air seeped from the gap, carrying the scent of rain though the station lay far below street level. Quinn took out her torch and shone it through. A narrow corridor ran east, its walls tiled in black. Fresh footprints crossed the dust: one set in polished shoes, one in heavy boots. The polished shoes had turned at the threshold. The boots continued down the corridor. Baines came up behind her. “Security?” “Maybe.” “Or the killer.” “The killer moved a grown man without leaving drag marks. Those boots might belong to two people.” “Or someone strong.” Quinn’s expression did not move. “Strong people still leave evidence.” At the corridor’s mouth, the blue dust thickened. It glittered in the torchlight, the same powder that marked Vane’s cuff. Quinn crouched and studied the prints. The boot prints had sunk too deep into the dust. Their tread showed a square heel and a split line through the sole. They pointed into the corridor. Then stopped. No return prints. Baines bent beside her. “Could’ve stepped around.” “On the walls?” The corridor floor lay blank beyond the final impression. Dust covered it undisturbed, except for a thin line that ran along the tiles towards a darkness beyond the torch beam. Quinn followed the line with her light. It ended at a broken section of wall where black tiles had fallen away. Behind them, a round arch opened into a tunnel that did not belong to the station plan. Its bricks looked wet, though no water ran over them. Darkness filled it with a density that swallowed the torch beam after three feet. The compass clicked again in its evidence bag. Baines stared at the arch. “That wasn’t there when I came through.” Quinn looked back at the platform. “Who else has been through this door?” “Market security said it led to sealed maintenance tunnels.” “Get their description.” “They left.” “Then find them.” Baines made no move. “That tunnel’s not on any map.” “Neither is the market.” A faint scrape came from inside the arch. Not a footstep. Something dragged across brick, slow and rough. Baines’s hand went to his radio. Quinn held up one gloved hand. The scrape stopped. From the platform, Eva called out. “Detective Quinn.” Quinn turned. Eva stood with her satchel hugged against her ribs. Her paper cup had collapsed in one hand. “That blue dust,” Eva said. “Silas kept it in a phial. He called it threshold ash.” “What did it do?” “It marked people who crossed certain doors.” Quinn looked at the tunnel. “Certain doors?” Eva swallowed. “Doors that weren’t meant to be open.”
created_at"2026-07-09T18:11:22.293Z" 7/9/2026, 6:11:22 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency914
moderation_latency(null)
generation_time35410
tokens_prompt1149
tokens_completion3314
native_tokens_prompt1009
native_tokens_completion2530
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"
usage0.0404725
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0d061422f84a9937016a4fe44a5a508190a065d24c60f1a4f6"
is_byokfalse
latency359
model_permaslug"openai/gpt-5.6-terra-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620682-TZ4CExTzdbMi1ouOEOMK"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620682-HleBrjwt77msu4dyFXSu"
upstream_id"resp_0d061422f84a9937016a4fe44a5a508190a065d24c60f1a4f6"
total_cost0.0404725
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
totalTags3
adverbTagCount0
adverbTags(empty)
dialogueSentences106
tagDensity0.028
leniency0.057
rawRatio0
effectiveRatio0
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1910
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)
79.06% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1910
totalAiIsms8
found
0
word"velvet"
count4
1
word"trembled"
count1
2
word"etched"
count1
3
word"pumping"
count1
4
word"measured"
count1
highlights
0"velvet"
1"trembled"
2"etched"
3"pumping"
4"measured"
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
narrationSentences153
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount3
hedgeCount0
narrationSentences153
filterMatches
0"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences256
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen27
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1910
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions19
unquotedAttributions1
matches
0"From the platform, Eva called out."
29.15% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions69
wordCount1324
uniqueNames10
maxNameDensity2.42
worstName"Quinn"
maxWindowNameDensity4
worstWindowName"Quinn"
discoveredNames
Tube1
Harlow1
Quinn32
Metropolitan1
Police1
Sergeant1
Baines14
Vane9
Bloomsbury1
Eva8
persons
0"Harlow"
1"Quinn"
2"Police"
3"Sergeant"
4"Baines"
5"Vane"
6"Eva"
places
0"Bloomsbury"
globalScore0.292
windowScore0.333
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences102
glossingSentenceCount1
matches
0"looked like scratches until Quinn leaned"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1910
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences256
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs192
mean9.95
std11.56
cv1.162
sampleLengths
011
152
218
331
47
58
628
73
83
93
101
116
122
132
147
154
166
173
1826
1934
203
215
2214
239
249
256
266
2758
289
2920
302
311
3222
331
3410
3515
363
375
388
3952
4042
4112
421
431
443
454
467
474
484
498
93.80% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences153
matches
0"been sewn"
1"been brushed"
2"been opened"
3"been wiped"
4"been painted"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs219
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences256
ratio0
matches(empty)
94.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1325
adjectiveStacks1
stackExamples
0"lay far below street"
adverbCount34
adverbRatio0.025660377358490565
lyAdverbCount6
lyAdverbRatio0.004528301886792453
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences256
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences256
mean7.46
std5.29
cv0.709
sampleLengths
011
110
219
323
418
514
66
711
87
98
106
1113
129
133
143
153
161
176
182
192
207
214
226
233
247
2510
267
272
2813
2913
308
313
325
3314
349
359
366
376
3819
3915
4024
419
4210
4310
442
451
4622
471
4810
4915
52.60% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats12
diversityRatio0.34375
totalSentences256
uniqueOpeners88
23.47% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences142
matches
0"Always at the edge of"
ratio0.007
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount31
totalSentences142
matches
0"Their soles looked too thin"
1"Her leather watch had stopped"
2"She tapped the glass with"
3"He had taken off his"
4"His tie hung loose, stained"
5"He looked up."
6"He wore a green velvet"
7"His skin had the grey,"
8"His mouth had been sewn"
9"Her curly red hair spilled"
10"She held both hands around"
11"She crouched beside Vane."
12"she told the scene officer"
13"Its velvet had been brushed"
14"His left cuff had a"
15"She rubbed a gloved fingertip"
16"They had needed a steady"
17"Her gaze travelled from Vane’s"
18"Its hands still showed 2:17."
19"He followed her eyes."
ratio0.218
37.46% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount120
totalSentences142
matches
0"The old Tube station had"
1"Water had stripped the enamel"
2"Tiles lay broken across the"
3"The tracks ended beneath a"
4"Detective Harlow Quinn stepped through"
5"Neither wore Metropolitan Police issue"
6"Their soles looked too thin"
7"Quinn looked at the gate’s"
8"A chain wrapped through the"
9"The padlock hung open, its"
10"The constable blinked."
11"Quinn turned her sharp jaw"
12"The man reached for his"
13"Quinn walked on."
14"Her leather watch had stopped"
15"The second hand trembled between"
16"She tapped the glass with"
17"He had taken off his"
18"His tie hung loose, stained"
19"He looked up."
ratio0.845
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences142
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences56
technicalSentenceCount2
matches
0"Always at the edge of something that went wrong: private collections broken into, stolen manuscripts recovered without clear provenance, a fire at a shuttered b…"
1"Darkness filled it with a density that swallowed the torch beam after three feet."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags3
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount0
fancyTags(empty)
dialogueSentences106
tagDensity0.028
leniency0.057
rawRatio0
effectiveRatio0
86.9850%