Run: 2026-09-03-01M1K4ZJFZM7WAYG30HHSKBRJY

Run Details

Duration:
53.7s
Cost:
$0.015274
Provider:
Meta

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 air at the old Camden Town spur tasted wrong. Harlow Quinn stood at the lip of the platform and breathed it in anyway, the way she always did at a scene, letting the place tell her what happened before anyone else tried to. Cold iron and damp concrete, the mineral stink of stagnant water somewhere below the tracks. And underneath it, ozone, sharp as a struck match. The station had been shuttered since the seventies, sealed behind a false wall off the Northern Line service tunnel. No power, no trains. The city had forgotten it. Which was why the call had come in as a trespass. One body, male, mid-thirties, found by track maintenance at 04:12. Uniform had strung tape across the tiled archway and put a constable at the top of the service stairs who looked too young to be on nights. Harlow showed her warrant card and ducked under, her boots finding the concrete with military precision, each step measured, shoulders square despite the ache in her knees from the climb down. Eva Kowalski was already inside the cordon. That stopped Harlow mid-step. Her jaw tightened, the sharp line of it catching the white glare of the portable floods. Eva stood too close to the body, her worn leather satchel hanging heavy against her hip, books bulging at the seams. Her curly red hair was coming loose from whatever clip she'd tried to contain it with, and she kept tucking it behind her left ear, a quick, nervous flick of the fingers that Harlow had catalogued the first time they'd met. Her round glasses reflected the floodlights. She was twenty-six and looked nineteen under the harsh light, freckles standing out stark across her nose. "This is a restricted scene," Harlow said. Eva glanced up, green eyes wide but not surprised. "DI Fennell called me. From the Museum. He thought — given the context — I should see it before it gets moved." Harlow's left wrist turned automatically, the worn leather watch there catching the light as she checked the time out of habit. 04:47. Fennell hadn't told her he was bringing in a consultant from the British Museum's restricted archives. Then again, Fennell liked to manage her. She moved past Eva and looked down. The man lay on his back on the cracked tiles between the two dead tracks, arms at his sides, palms up, as tidy as if he'd lain down for a nap. He wore a good wool coat, dark jeans, boots that had been polished recently. No visible wounds. No blood. No defensive marks. His face was slack, eyes open, pupils blown wide and fixed on the vaulted ceiling where old advertising hoardings peeled in damp strips. His mouth was slightly open. In his right hand, clenched so tight the knuckles were white, was a small, yellowed disc of bone, pierced through the center with twine. Harlow crouched. The ozone smell was stronger here. "Cause of death?" she asked the constable hovering by the floods. He was holding a clipboard and trying not to look at the corpse. "Haven't had the pathologist yet, ma'am. But Fennell said — heart attack, maybe? No trauma." Eva made a soft sound. Harlow looked at her. "No trauma you can see," Eva said, and tucked her hair again. "You need to look closer." Harlow's irritation flared, banked. Eighteen years and she knew when someone was trying to steer her. She turned her attention back to the body and did what she always did, what had kept her alive when DS Morris hadn't — she looked at what wasn't there. There were no footprints. The platform was filmed with a century of soot and lime dust, undisturbed except for the tracks of the maintenance crew that had found him and the fresh scuffs of Eva's shoes and Harlow's own boots. The dead man's boots were clean. The soles left no print. As if he'd been placed here, not walked. There was no wallet, no phone, no keys. No transit dust on his coat, though he should have passed through half a mile of service tunnel to get here. And the bone token. Harlow gently pried at the man's fingers. Rigor had set. The little disc didn't belong in a place like this. It wasn't a keychain or a charm. It was worked, smoothed at the edges, old. "A token," Eva said quietly, crouching beside her though Harlow hadn't invited her. The satchel thumped against the tiles. "For entry. You can't find the market without one. It only answers if you know where to look." "The market?" "The Veil Market." Eva's voice dropped. She glanced over her shoulder at the arched tunnels that led deeper into the dark, where the floods didn't reach. "This is it. Or it was. Tonight. It's beneath Camden, but it moves every full moon. You won't find it on any Tube map. It sells things that aren't supposed to exist — enchanted goods, banned alchemicals, information. You need a bone token to get through." Harlow stared at her. The rational part of her brain, the part that had filed reports and given evidence at the Old Bailey and spent three years trying to make sense of how Morris had died in a locked room with no windows and lungs full of river water, wanted to dismiss it. Occult researcher. Master's in Ancient History from Oxford. Childhood friend of some girl in a clique Harlow had been watching for months. Of course Eva would see ghosts. But Fennell's interpretation was worse. Heart attack. A man in his thirties, laid out like an offering in a sealed station that shouldn't be accessible, with no reason to be here and no way in. That didn't add up either. She reached for the man's left hand. It was empty, but his sleeve had ridden up. Around his wrist was a cord, and on the cord hung a small brass compass. The casing had a patina of verdigris, green blooming at the edges, and the face was etched with fine, concentric sigils that caught the floodlight and seemed to shift if she looked at them too long. Harlow lifted it, careful not to disturb the cord. The needle spun lazily, then snapped to attention — not north. It pointed past the body, past Eva, straight down the southern tunnel where the dark pooled thick enough to look solid. The needle trembled, eager. Eva inhaled sharply. "Don't —" "What is it?" "A Veil Compass. Crafted by a Shade artisan. It doesn't point north. It points toward the nearest supernatural rift or portal." Eva's freckled face was pale now, her hand hovering but not touching. "If it's pulling that hard, the rift is still open." Harlow felt the hairs on her neck rise. The ozone smell, she realized, was coming from that tunnel. And the air there was colder. Not the ambient cold of underground concrete, but a specific, localized drop, as if a door had been left open onto winter. She looked back at the body. No wounds. But the skin of his throat, just under the jaw, had a faint tracery of black veins, like frost spreading under glass, already fading. She stood, her bearing snapping straight, shoulders back. For three years she'd told herself Morris's death was a fluke, a hidden medical event, a toxin they hadn't tested for. She'd never let herself look at the other possibility, the one the coroner had whispered about and then redacted. Now the compass needle quivered, the sigils on its face faintly warm against her palm, and the dust on the platform told a story that wasn't about trespass at all. "He didn't have a heart attack," Harlow said. Her voice was low, certain. "And he didn't walk in." Eva nodded, relief flickering behind her glasses. "The Market moves. At midnight the veil is thinnest. The bone token gets you in, the compass gets you out — or it should. If you open a rift and panic —" "If you open something and don't know how to close it," Harlow finished. She looked at the dark mouth of the tunnel where the compass pulled. The needle wasn't trembling anymore. It was locked, insistent. Someone — or something — had left a door open, and this man had been on the wrong side of it when it tried to close. She slipped on a pair of latex gloves from her pocket and carefully lifted the compass free of the dead man's wrist, wrapping the cord around her own hand. The brass was cold enough to sting. The protective sigils etched into the face seemed to steady under her grip. "Fennell wants this to be simple," Eva said. "He wants a body with no marks to be a natural death." "Fennell wants a closed case before the press finds out there's a corpse in a ghost station," Harlow said. She turned her leather watch again, noting the time, fixing it. 04:51. She could already hear the distant echo of more boots on the service stairs, the pathologist and Fennell coming down to tell her what she was supposed to see. She didn't look at them. She looked at the undisturbed dust, at the bone token clenched like a fare, at the frost-veins fading from the man's throat, at the compass that refused to point north. "Get your satchel," she told Eva, and started toward the dark, toward the cold spot that shouldn't exist, the needle pulling her forward. "Show me where the door is. Before they contaminate the scene with the wrong story." Behind her, Eva scrambled to follow, her hand tucking that stray curl behind her ear one more time, and the floods buzzed and threw their hard white light over a platform that was no longer empty at all.
created_at"2026-09-03T08:08:20.233Z" 9/3/2026, 8:08:20 AM
model"meta/muse-spark-1.2-20260805"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4213
moderation_latency(null)
generation_time53660
tokens_prompt896
tokens_completion2383
native_tokens_prompt846
native_tokens_completion3345
native_tokens_completion_images0
native_tokens_reasoning1209
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"auto"
usage0.01527375
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user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
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api_type"completions"
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provider_responses
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endpoint_id"ffc8e76e-808a-44d2-bd21-c6ac16e721cb"
id"resp_6a992af4d96ba068d59a432f"
is_byokfalse
latency766
model_permaslug"meta/muse-spark-1.2-20260805"
provider_name"Meta"
status200
total_cost0.01527375
cache_discount(null)
upstream_inference_cost0
provider_name"Meta"
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
totalTags11
adverbTagCount1
adverbTags
0"Eva said quietly [quietly]"
dialogueSentences24
tagDensity0.458
leniency0.917
rawRatio0.091
effectiveRatio0.083
84.64% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1628
totalAiIsmAdverbs5
found
0
adverb"slightly"
count1
1
adverb"gently"
count1
2
adverb"lazily"
count1
3
adverb"sharply"
count1
4
adverb"carefully"
count1
highlights
0"slightly"
1"gently"
2"lazily"
3"sharply"
4"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)
69.29% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1628
totalAiIsms10
found
0
word"measured"
count1
1
word"stark"
count1
2
word"blown wide"
count1
3
word"charm"
count1
4
word"sense of"
count1
5
word"etched"
count2
6
word"trembled"
count1
7
word"quivered"
count1
8
word"echo"
count1
highlights
0"measured"
1"stark"
2"blown wide"
3"charm"
4"sense of"
5"etched"
6"trembled"
7"quivered"
8"echo"
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
narrationSentences111
matches(empty)
27.03% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount3
hedgeCount6
narrationSentences111
filterMatches
0"watch"
1"look"
hedgeMatches
0"tried to"
1"seemed to"
2"started to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences124
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen49
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1637
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions17
unquotedAttributions0
matches(empty)
80.56% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions56
wordCount1368
uniqueNames17
maxNameDensity1.39
worstName"Harlow"
maxWindowNameDensity2.5
worstWindowName"Harlow"
discoveredNames
Camden1
Town1
Quinn1
Northern1
Line1
Kowalski1
Harlow19
Eva17
British1
Museum1
Fennell4
Morris3
Old1
Bailey1
Ancient1
History1
Oxford1
persons
0"Quinn"
1"Kowalski"
2"Harlow"
3"Eva"
4"Museum"
5"Fennell"
6"Morris"
7"Old"
8"Bailey"
places
0"Camden"
1"Town"
2"British"
3"Ancient"
4"Oxford"
globalScore0.806
windowScore0.833
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences76
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.611
wordCount1637
matches
0"Not the ambient cold of underground concrete, but a specific, localized drop, as if a door had been left open"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences124
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs41
mean39.93
std27.55
cv0.69
sampleLengths
010
197
268
37
420
585
67
731
845
97
10105
118
1224
1315
149
1517
1646
1759
1829
1939
2037
212
2272
2381
2440
2567
2645
275
283
2943
3078
3178
3218
3339
3461
3549
3620
3760
3835
3938
4038
79.97% Passive voice overuse
Target: ≤2% passive sentences
passiveCount8
totalSentences111
matches
0"been shuttered"
1"been polished"
2"was filmed"
3"been placed"
4"was worked"
5"was etched"
6"been left"
7"was supposed"
59.94% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs238
matches
0"was coming"
1"was bringing"
2"was holding"
3"was trying"
4"was coming"
73.73% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount4
semicolonCount0
flaggedSentences3
totalSentences124
ratio0.024
matches
0"She turned her attention back to the body and did what she always did, what had kept her alive when DS Morris hadn't — she looked at what wasn't there."
1"The needle spun lazily, then snapped to attention — not north."
2"Someone — or something — had left a door open, and this man had been on the wrong side of it when it tried to close."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1251
adjectiveStacks0
stackExamples(empty)
adverbCount33
adverbRatio0.026378896882494004
lyAdverbCount9
lyAdverbRatio0.007194244604316547
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences124
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences124
mean13.2
std10.61
cv0.804
sampleLengths
010
134
215
39
419
54
65
711
810
927
1031
117
124
1316
1421
1541
166
1717
187
199
2022
2121
221
2316
247
257
2631
2714
283
292
303
3123
325
3324
342
356
3611
3713
3815
395
404
4112
425
434
4412
4530
464
4736
486
495
51.64% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats12
diversityRatio0.36885245901639346
totalSentences122
uniqueOpeners45
67.34% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences99
matches
0"Then again, Fennell liked to"
1"Of course Eva would see"
ratio0.02
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount29
totalSentences99
matches
0"Her jaw tightened, the sharp"
1"Her curly red hair was"
2"Her round glasses reflected the"
3"She was twenty-six and looked"
4"She moved past Eva and"
5"He wore a good wool"
6"His face was slack, eyes"
7"His mouth was slightly open."
8"she asked the constable hovering"
9"He was holding a clipboard"
10"She turned her attention back"
11"It wasn't a keychain or"
12"It was worked, smoothed at"
13"She glanced over her shoulder"
14"She reached for the man's"
15"It was empty, but his"
16"It pointed past the body,"
17"She looked back at the"
18"She stood, her bearing snapping"
19"She'd never let herself look"
ratio0.293
81.21% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount75
totalSentences99
matches
0"The air at the old"
1"Harlow Quinn stood at the"
2"The station had been shuttered"
3"The city had forgotten it."
4"Uniform had strung tape across"
5"Harlow showed her warrant card"
6"Eva Kowalski was already inside"
7"That stopped Harlow mid-step."
8"Her jaw tightened, the sharp"
9"Eva stood too close to"
10"Her curly red hair was"
11"Her round glasses reflected the"
12"She was twenty-six and looked"
13"Eva glanced up, green eyes"
14"Harlow's left wrist turned automatically,"
15"Fennell hadn't told her he"
16"She moved past Eva and"
17"The man lay on his"
18"He wore a good wool"
19"His face was slack, eyes"
ratio0.758
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences99
matches
0"As if he'd been placed"
1"Now the compass needle quivered,"
ratio0.02
34.16% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences46
technicalSentenceCount7
matches
0"The platform was filmed with a century of soot and lime dust, undisturbed except for the tracks of the maintenance crew that had found him and the fresh scuffs …"
1"The rational part of her brain, the part that had filed reports and given evidence at the Old Bailey and spent three years trying to make sense of how Morris ha…"
2"A man in his thirties, laid out like an offering in a sealed station that shouldn't be accessible, with no reason to be here and no way in."
3"The casing had a patina of verdigris, green blooming at the edges, and the face was etched with fine, concentric sigils that caught the floodlight and seemed to…"
4"Not the ambient cold of underground concrete, but a specific, localized drop, as if a door had been left open onto winter."
5"She looked at the undisturbed dust, at the bone token clenched like a fare, at the frost-veins fading from the man's throat, at the compass that refused to poin…"
6"Behind her, Eva scrambled to follow, her hand tucking that stray curl behind her ear one more time, and the floods buzzed and threw their hard white light over …"
79.55% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags11
uselessAdditionCount1
matches
0"Eva's, her hand hovering but not touching"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags8
fancyCount0
fancyTags(empty)
dialogueSentences24
tagDensity0.333
leniency0.667
rawRatio0
effectiveRatio0
86.3021%