Run: 2026-07-09-01KX40VB31QE55ZPTZ9ZWT39G0

Run Details

Duration:
18.1s
Cost:
$0.017245
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
Detective Harlow Quinn ducked beneath the police tape and entered the abandoned Tube station. The platform stretched beneath Camden like a buried rib. Tiles peeled from the walls in long white strips. Old advertisements stared down through mould and grime: holidays in Brighton, cigarettes in silver packets, a theatre show that had closed forty years ago. Water dripped from the tunnel roof, each drop striking the rails with a clean metallic tick. Uniformed officers clustered around the body. Quinn stopped at the edge of the platform and checked her watch. The leather strap had darkened with rain. 02:17. “Who found him?” Constable Reed lifted a hand. “Maintenance crew heard a crash. They came through the service entrance.” “Which entrance?” “North stairwell.” Quinn looked along the platform. The north stairwell stood behind her, sealed with a temporary metal gate. No other access led down from this side. The track tunnel ran east and west, but both ends vanished into darkness behind locked grilles. “Who touched the scene?” “Only me. I checked for a pulse.” “Gloves?” Reed held up his hands. Blue nitrile stretched over his fingers. Quinn stepped closer. The dead man lay on his back beside the ticket machines, one arm flung towards the tracks. His throat showed a thin red line beneath the jaw. A dark stain spread across his collar, though little blood had reached the floor. His coat looked expensive, cut in a style Quinn had never seen in any London shop. A silver chain crossed his waistcoat. Its pendant rested in the hollow beneath his sternum: a small brass compass, green with verdigris. A woman crouched near the body, just outside the chalk marks. Curly red hair spilled over the shoulders of her brown coat. Round glasses caught the harsh glare from the portable lamps. A worn leather satchel sagged against her hip, packed so tightly that books pressed against its seams. Quinn recognised her from previous reports. “Eva Kowalski.” Eva tucked a curl behind her left ear. “Detective Quinn.” “You’re inside my crime scene.” “I came with the officers.” “You weren’t invited.” “The dead man was called Tomas Vale. He sold restricted objects at the Veil Market.” Quinn glanced at the body. “You know him?” “I know of him.” “That wasn’t my question.” Eva’s green eyes moved to the pendant. “No. I never met him.” Quinn crouched beside the corpse. The tiles around Vale held a clear pattern of footprints. Heavy work boots had approached from the north stairwell, crossed the platform, and stopped beside the body. Another set led away in the same direction. The prints showed a deep tread, crisp edges, and a narrow heel. Quinn studied the blood. “Where’s the weapon?” Reed pointed towards the track. A kitchen knife lay between the rails, its blade black beneath the station lights. “Bag it,” Quinn ordered. “Photograph it first.” “It looks like a straightforward robbery,” Eva murmured. Quinn looked up. “A robbery?” “Vale traded cursed artefacts, illicit compounds, information. People killed for less.” “Nothing’s missing.” Eva’s fingers found the edge of her satchel. “You don’t know that.” “I know he still has his watch, rings, wallet, and boots. I know the chain remains around his neck. I know the killer brought a knife, used it, threw it onto the track, and walked back up the stairs.” “Then you’ve solved it.” Quinn stood. Military precision held every movement tight. “No. I’ve described what the scene wants me to believe.” A gust moved through the station. It carried the wet mineral stink of the tunnels and something sweeter beneath it, like burnt sugar. Quinn turned towards the dark eastern passage. The rails shone with moisture. No train had run here in decades, yet a thin current of air pulled towards the tunnel, tugging at the plastic sheeting around the lamps. “Who secured the station?” she asked. Reed pointed to a uniformed sergeant near the gate. “We did.” “From the outside?” “Yes.” “Then how did anyone leave?” “The same way they entered.” “Through the north stairwell.” Quinn returned to the prints. “Why do the tread marks point both ways?” Reed frowned. “Because the suspect came in and went out.” “Look at the mud.” He bent beside her. Every footprint contained the same pale grit. The first print began less than a metre from Vale’s head. It faced the stairwell. The next print faced away. There was no overlap, no turn, no scuff where a person had pivoted. The boots had appeared to walk in two directions at once. Reed rubbed his gloved thumb against the tile. “Could be two suspects.” “Same boots. Same stride. Same pressure.” “Two men could wear the same boots.” “One would have left a different weight pattern.” Eva peered over the edge of her glasses. “Unless there was only one set of feet.” Quinn’s gaze fixed on her. “Explain.” Eva reached into the satchel and withdrew a narrow notebook. Its cover had buckled from use. She flipped through pages filled with tight handwriting, diagrams, and small copied symbols. “The Market moves tonight,” she said. “What market?” “The Veil Market.” Reed gave a humourless laugh. “The underground market?” Eva ignored him. “It relocates with every full moon. It has occupied abandoned stations before. Aldwych. Down Street. The old platforms beneath King’s Cross. If Vale worked there, he might have been killed during a transaction.” “By a ghost in work boots?” “Not a ghost.” “Good. I’m relieved.” Eva looked at the footprints again. “A Shade.” The word sat between them. Quinn had heard it in three witness statements connected to the case of DS Morris. Each witness had withdrawn their account within twenty-four hours. One had disappeared. The other two had denied ever speaking to police. She kept her expression still. “What does a Shade do?” “Depends which account you read.” “I’m not asking for folklore.” “Then you’re asking the wrong person.” Quinn moved around the body. The chalk outline showed Vale’s left hand extended towards the tracks, fingers curled. His right hand rested on his stomach. His eyes remained open. Tiny red vessels webbed the whites. No defensive injuries. No bruising. No broken nails. She crouched and examined the wound. The cut travelled across the throat from left to right, shallow at the centre, deeper beneath the right ear. A trained hand had made it. The knife on the rails matched the width of the cut, but the blood pattern did not. “Reed, where did he fall?” “Here.” “Who determined that?” “Me.” “Based on?” “The blood.” Quinn pointed to the stain beneath Vale’s collar. “Blood pooled under him, not beside him. If he bled out on the floor, we’d see a fan or a run along the tile. There’s nothing.” “He could’ve been killed elsewhere and dragged here.” “No drag marks.” “He was carried.” “No compression in the shoulders. No smear beneath the coat.” Reed looked towards the officers. “Then he just died standing up?” “His body says he fell here. His blood says he died somewhere else.” Eva closed her notebook. “The veil can hold a moment.” Quinn’s jaw tightened. “The veil.” “A boundary. A thin place between ordinary London and what exists beside it.” “Can it hold blood?” “It can hold anything that crossed with the right intention.” “Does it leave footprints?” “Not always.” “Does it leave knife wounds?” Eva hesitated. That pause told Quinn more than the answer. She reached for the brass compass without touching it. The face held no ordinary directions. Protective sigils circled the glass, each mark cut with a craftsman’s care. The needle trembled beneath the glass, then swung towards the eastern tunnel. Quinn leaned closer. The compass pointed not towards the knife, the body, or the stairs. It pointed to a section of tiled wall. A faded advertisement covered the spot. A smiling woman held a glass of mineral water against a blue background. Her printed eyes looked towards the tracks. “Bag that,” Quinn ordered. Reed stared. “The compass?” “The whole thing. Photograph it in place.” Eva stepped between Quinn and the wall. “Don’t move it.” “I wasn’t planning to.” “Don’t touch the wall, either.” Quinn studied her. “You’ve become very confident for someone who didn’t witness the murder.” “I know what that compass is.” “Then tell me.” “It’s a Veil Compass. It points towards supernatural rifts.” Reed muttered, “That’s not a real sentence.” Eva’s hand went to her hair again. “It was crafted by a Shade artisan. The casing holds a patina of verdigris because the metal reacts to the energy around a rift.” Quinn watched the needle. It shivered, halted, and shivered again. “Nearest rift,” Eva continued. “Not the place where the killer stood. Not the place where the victim died. The nearest opening.” Quinn moved to the wall. The advertisement had bubbled away from the tiles along its right edge. She slid a gloved finger beneath the paper and lifted it two centimetres. Cold breathed through the gap. Not tunnel air. This cold had weight. It pressed against her knuckles and crawled beneath the glove. She pulled the paper down. Behind it, the tiles had split along a narrow vertical seam. A black line ran from the platform to the ceiling, too straight to be a crack. The edges glimmered with dull violet light. Reed stepped back. “What the hell is that?” Eva’s face lost its colour. “A rift.” The line widened. The station lamps flickered. For one instant, the platform appeared crowded. Figures stood on the tracks in dark coats and veiled hats, their faces hidden behind lacquered masks. Stalls filled the far tunnel. Glass bottles glowed green and blue. A woman with antlers leaned over a counter piled with teeth. A man without a shadow counted coins beneath a red lantern. Then the lamps steadied. The tunnel showed only rusted rails and damp brick. Vale’s body remained on the platform. The knife remained between the rails. The footprints remained fixed in both directions. Quinn stared at the seam. “Can you close it?” she asked. Eva swallowed. “I don’t know.” “Can anyone?” “The Market has rules.” “I’m not interested in the Market’s rules.” “You should be. If the rift opened here, the killer could have crossed through it.” Quinn looked back at Vale. “And left the knife.” “No. The knife may have crossed with him.” “The footprints began beside the body.” Eva lowered her voice. “They began where the rift touched the platform.” Quinn checked the tiles. The first footprint sat less than a metre from Vale’s head, but its heel pressed into a thin smear of black residue. The stain did not belong to the blood. It curled beneath the print like smoke trapped under glass. She followed the trail with her eyes. The second set of prints did not end at the stairs. They stopped beside the wall. At the seam. Quinn rose and walked towards it. The compass needle snapped against the eastern edge of its casing. The rift pulsed once, and the advertisement peeled away from the tiles with a soft, wet sound. Behind the opening, something scraped against stone. Reed reached for his pistol. Quinn raised one hand. “Don’t.” The scraping stopped. For a breath, the station held still. Then a boot emerged through the narrow black seam, the sole wet with pale grit. A second boot followed. Something pressed against the opening from the other side, forcing the rift wider. Eva backed into the ticket machine. Quinn drew her weapon and aimed at the gap. “Whoever’s in there,” she called, “come through with your hands visible.” A gloved hand appeared. It held a blood-streaked knife.
created_at"2026-07-09T18:04:43.498Z" 7/9/2026, 6:04:43 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1936
moderation_latency(null)
generation_time17041
tokens_prompt1149
tokens_completion3333
native_tokens_prompt1009
native_tokens_completion2706
native_tokens_completion_images0
native_tokens_reasoning158
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"
usage0.017245
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0baad350dcdd3065016a4fe2bb9468819497c5c706104fef6a"
is_byokfalse
latency233
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-1783620283-yBFiRekzrBmjvX57IPKU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620283-1q6hR8PMlaForuL9zXCi"
upstream_id"resp_0baad350dcdd3065016a4fe2bb9468819497c5c706104fef6a"
total_cost0.017245
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
totalTags10
adverbTagCount0
adverbTags(empty)
dialogueSentences106
tagDensity0.094
leniency0.189
rawRatio0
effectiveRatio0
94.82% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1929
totalAiIsmAdverbs2
found
0
adverb"tightly"
count1
1
adverb"very"
count1
highlights
0"tightly"
1"very"
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)
79.26% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1929
totalAiIsms8
found
0
word"pulse"
count1
1
word"weight"
count2
2
word"stomach"
count1
3
word"determined"
count1
4
word"trembled"
count1
5
word"flickered"
count1
6
word"pulsed"
count1
highlights
0"pulse"
1"weight"
2"stomach"
3"determined"
4"trembled"
5"flickered"
6"pulsed"
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
narrationSentences169
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount2
narrationSentences169
filterMatches
0"watch"
hedgeMatches
0"appeared to"
1"tended to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences265
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen39
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1929
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions15
unquotedAttributions0
matches(empty)
16.67% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions74
wordCount1300
uniqueNames10
maxNameDensity2.46
worstName"Quinn"
maxWindowNameDensity4.5
worstWindowName"Quinn"
discoveredNames
Harlow1
Quinn32
Tube1
Camden1
Brighton1
Reed12
London1
Vale7
Eva17
Morris1
persons
0"Harlow"
1"Quinn"
2"Camden"
3"Reed"
4"Vale"
5"Eva"
6"Morris"
places
0"Brighton"
1"London"
globalScore0.269
windowScore0.167
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences100
glossingSentenceCount1
matches
0"appeared crowded"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1929
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences265
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs161
mean11.98
std13.46
cv1.124
sampleLengths
014
158
26
320
43
516
62
72
841
94
107
111
1211
133
1479
1511
1638
176
182
1910
205
215
223
2315
248
254
264
2712
2852
294
303
3119
327
338
345
3511
362
3712
3839
394
4018
4123
427
4330
446
4511
463
471
485
495
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences169
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs221
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences265
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1302
adjectiveStacks0
stackExamples(empty)
adverbCount25
adverbRatio0.019201228878648235
lyAdverbCount3
lyAdverbRatio0.002304147465437788
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences265
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences265
mean7.28
std5.3
cv0.728
sampleLengths
014
19
29
324
416
56
612
77
81
93
105
1111
122
132
145
1512
168
1716
184
197
201
215
226
233
2417
2510
2614
2716
286
2916
3011
3111
3210
3317
346
352
368
372
385
395
403
4115
425
433
444
454
467
475
485
4910
47.60% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats11
diversityRatio0.3106060606060606
totalSentences264
uniqueOpeners82
43.57% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences153
matches
0"Then the lamps steadied."
1"Then a boot emerged through"
ratio0.013
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount23
totalSentences153
matches
0"His throat showed a thin"
1"His coat looked expensive, cut"
2"Its pendant rested in the"
3"It carried the wet mineral"
4"He bent beside her."
5"It faced the stairwell."
6"Its cover had buckled from"
7"She flipped through pages filled"
8"She kept her expression still."
9"His right hand rested on"
10"His eyes remained open."
11"She crouched and examined the"
12"She reached for the brass"
13"It pointed to a section"
14"Her printed eyes looked towards"
15"It shivered, halted, and shivered"
16"She slid a gloved finger"
17"It pressed against her knuckles"
18"She pulled the paper down."
19"It curled beneath the print"
ratio0.15
35.16% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount130
totalSentences153
matches
0"Detective Harlow Quinn ducked beneath"
1"The platform stretched beneath Camden"
2"Tiles peeled from the walls"
3"Water dripped from the tunnel"
4"Quinn stopped at the edge"
5"The leather strap had darkened"
6"Constable Reed lifted a hand."
7"Quinn looked along the platform."
8"The north stairwell stood behind"
9"The track tunnel ran east"
10"Reed held up his hands."
11"Quinn stepped closer."
12"The dead man lay on"
13"His throat showed a thin"
14"A dark stain spread across"
15"His coat looked expensive, cut"
16"A silver chain crossed his"
17"Its pendant rested in the"
18"A woman crouched near the"
19"A worn leather satchel sagged"
ratio0.85
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences153
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences50
technicalSentenceCount1
matches
0"Old advertisements stared down through mould and grime: holidays in Brighton, cigarettes in silver packets, a theatre show that had closed forty years ago."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags10
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags9
fancyCount5
fancyTags
0"Quinn ordered (order)"
1"Eva murmured (murmur)"
2"Quinn ordered (order)"
3"Reed muttered (mutter)"
4"Eva continued (continue)"
dialogueSentences106
tagDensity0.085
leniency0.17
rawRatio0.556
effectiveRatio0.094
87.2361%