Run: 2026-10-07-01M4ASTXVPKNEEQM25TKWTN85T

Run Details

Duration:
17.8s
Cost:
$0.017560
Provider:
Mistral

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 abandoned Tube station beneath Camden reeked of damp concrete and old rust, the air thick with the kind of silence that pressed against the eardrums. Detective Harlow Quinn stepped over the yellow police tape, her boots scuffing against the gritty floor. The beam of her torch cut through the gloom, illuminating the peeling posters on the walls—faded advertisements for long-forgotten plays and products, their edges curled like dead leaves. She adjusted the worn leather watch on her left wrist, the familiar weight a small comfort in the oppressive dark. Something was wrong. The call had come in an hour ago: a body found in the disused station, reported by an anonymous tip. But the moment Quinn had descended the crumbling stairs, her instincts had prickled. The uniformed officers on scene had been too quiet, their usual bravado replaced by a tense, almost superstitious hush. And then there was the body—or what was left of it. The corpse lay sprawled near the old platform edge, limbs splayed at unnatural angles. The face was frozen in an expression of sheer terror, the eyes wide and unblinking, the mouth stretched in a silent scream. But it wasn’t the expression that unsettled Quinn. It was the lack of blood. No pooling beneath the body, no spatter on the walls. Just a single, clean puncture wound in the center of the chest, as if something had been—taken. “No signs of struggle,” muttered PC Harris, a fresh-faced officer who looked like he’d rather be anywhere else. “No defensive wounds, no drag marks. It’s like he just… dropped.” Quinn crouched beside the body, her sharp jaw tightening. The victim was male, mid-thirties, dressed in a rumpled suit that had seen better days. His shoes were scuffed, the soles worn thin. A man who walked a lot. A man who moved in circles that left marks. She reached into her coat pocket and snapped on a pair of latex gloves before carefully patting down the jacket. In the inner breast pocket, her fingers brushed against something cold and metallic. She pulled it out. A small brass compass, its casing etched with intricate sigils and marred by a patina of verdigris. The needle didn’t point north. It twitched erratically, as if caught between invisible forces, before settling on a direction that made no sense—toward the solid wall of the station. Quinn’s pulse quickened. She’d seen strange things in her eighteen years on the force, but this… this was different. The compass wasn’t just unusual. It was wrong. “Detective.” She turned at the sound of the voice. Eva Kowalski stood a few paces away, her round glasses perched on her freckled nose, a worn leather satchel slung over her shoulder. The red curls were a wild halo around her head, and she was already tucking a strand behind her left ear—a nervous habit Quinn had come to recognize over the past few months. Eva wasn’t police. She was a researcher, an occultist, and, much to Quinn’s initial skepticism, a woman whose insights had proven uncomfortably useful in the past. “You’re not supposed to be here,” Quinn said, though there was no real bite in her words. Eva stepped closer, her green eyes fixed on the compass in Quinn’s hand. “I heard the description over the scanner. No blood, the puncture wound… it matches the cases from two years ago.” Quinn’s grip tightened around the compass. “Those cases were never solved.” “Because they weren’t normal.” Eva’s voice was low, urgent. “That’s a Veil Compass. It points to rifts—portals between realms. And if it’s here, at a crime scene…” She trailed off, but the implication hung heavy in the air. Quinn stood, slipping the compass into an evidence bag. “You’re saying this is supernatural.” Eva hesitated. “I’m saying there’s more to this than meets the eye. The Veil Market moves every full moon. It’s a black market for the… unusual. Enchanted items, forbidden knowledge. And it’s not exactly welcoming to outsiders.” Quinn exhaled sharply. “So you’re telling me our victim was involved in some underground magical flea market, and that’s how he ended up dead?” “Not just involved.” Eva adjusted her glasses, her fingers trembling slightly. “That compass? It’s not something you buy at a stall. It’s a tool for navigators—people who can move between realms. If he had it, he was either a buyer with very specific needs… or he was a guide.” A guide. Quinn’s mind flashed back to three years ago, to the case that had taken DS Morris from her. The official report had called it a tragic accident—Morris had fallen down a flight of stairs during a chase. But Quinn had been there. She’d seen the way his body had… twisted. The way the shadows in that alley had seemed to move on their own. The way the coroner’s report had been inconclusive, as if the cause of death defied explanation. She pushed the memory away. “And the wound?” “Something was extracted,” Eva said. “Not just blood. Something… else. Souls have weight in the occult world. They can be traded, consumed, repurposed.” Quinn’s stomach twisted. “You’re talking about soul theft.” Eva nodded. “It’s rare. But not unheard of. Especially in places like the Veil Market.” Quinn turned back to the body, her mind racing. The lack of blood, the precision of the wound, the compass. It all pointed to something beyond the usual knife fights and drug deals she dealt with. But how did it connect? And why here, in an abandoned Tube station? She knelt again, this time examining the victim’s hands. The fingers were stained with something dark, but it wasn’t blood. It was thicker, almost tar-like. And beneath the nails— “Dirt,” she muttered. “Fresh dirt.” Eva crouched beside her. “That’s not from here. The station’s been sealed for decades. No gardens, no potted plants.” Quinn’s mind clicked. “He was digging.” “Or he’d been somewhere he shouldn’t have.” Quinn stood, her gaze sweeping the station. The walls were solid, the exits sealed. But the compass had pointed toward the wall. She walked toward it, running her fingers along the cold, damp bricks. Nothing. No seams, no hidden doors. Just solid masonry. Then she saw it. A symbol, barely visible in the torchlight, etched into the brickwork at eye level. A circle with a jagged line through it—like a crude, hastily drawn rune. She traced it with her fingertip. The brick was slightly warmer here, as if something had passed through recently. “Eva,” she said, her voice tight. “What does this mean?” Eva joined her, her breath hitching as she saw the symbol. “It’s a marker. A temporary one. Someone opened a rift here—recently.” Quinn’s pulse spiked. “And the body?” “Collateral damage,” Eva said grimly. “Or a warning.” A warning. Quinn’s thoughts darkened. If the Veil Market was involved, and if this was a message, then the victim wasn’t just a random casualty. He was a piece in a larger game. And if Morris’s death had been tied to the same forces… She turned back to the body, her mind piecing together the fragments. The compass, the rune, the lack of blood. The dirt under the nails. “He wasn’t just a guide,” she said slowly. “He was running. And they caught him.” Eva’s eyes widened. “You think he was trying to escape?” “Or hide.” Quinn’s voice was steel. “And someone didn’t want him to.” The torchlight flickered, casting long, wavering shadows across the platform. For a moment, Quinn could have sworn she saw something move in the darkness—something with too many limbs, too many eyes. But when she blinked, it was gone. She straightened, her military precision kicking in. “We need to find out who this man was. And we need to do it fast. If the Market’s moving soon, we might not have another chance.” Eva nodded, but her gaze was fixed on the compass in Quinn’s hand. “That thing’s still active. It might lead us to the next location.” Quinn weighed the compass in her palm. It was evidence. But it was also a lead. And if there was even a chance this could tie back to Morris’s death… She made her decision. “Then we follow it.” As they turned to leave, the compass needle twitched violently, then spun in a slow, deliberate circle before pointing directly at Eva’s satchel. Quinn’s blood ran cold. Eva’s face paled. “Oh. That’s… not good.” “What’s in the bag, Eva?” Eva swallowed hard, her fingers tightening around the strap. “A book. An old one. I, uh, may have acquired it from a less-than-reputable source.” Quinn’s jaw clenched. “You stole from the Veil Market.” “Borrowed! Temporarily!” Eva’s voice squeaked. “I was going to return it! Eventually!” The compass needle wobbled, then pointed toward the ceiling, as if something above them had shifted. Quinn grabbed Eva’s arm. “We need to move. Now.” The shadows in the station seemed to deepen, pressing in around them. And then, from the darkness beyond the platform, came a sound—soft, wet, like something dragging itself across the floor. Quinn’s hand went to her sidearm. “Stay close.” Eva didn’t argue. For once, she was silent, her usual chatter replaced by a wide-eyed, white-knuckled grip on her satchel. As they moved toward the stairs, the compass in Quinn’s hand grew warm, the needle spinning wildly. Whatever was coming, it was close. And it was hungry.
created_at"2026-10-07T09:06:43.711Z" 10/7/2026, 9:06:43 AM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency375
moderation_latency(null)
generation_time17743
tokens_prompt896
tokens_completion2463
native_tokens_prompt887
native_tokens_completion2164
native_tokens_completion_images(null)
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"stop"
service_tier"default"
usage0.0175605
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791364003-vpwogAkuK4JYKDQ4vZYi"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791364003-FNa6c4DgwLv7LwIzS6fK"
upstream_id"4486b56229db47a49151b6096ca5a72d"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"4486b56229db47a49151b6096ca5a72d"
is_byokfalse
latency375
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.0175605
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"
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
totalTags10
adverbTagCount2
adverbTags
0"Eva said grimly [grimly]"
1"she said slowly [slowly]"
dialogueSentences45
tagDensity0.222
leniency0.444
rawRatio0.2
effectiveRatio0.089
80.89% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1570
totalAiIsmAdverbs6
found
0
adverb"carefully"
count1
1
adverb"sharply"
count1
2
adverb"slightly"
count2
3
adverb"very"
count1
4
adverb"slowly"
count1
highlights
0"carefully"
1"sharply"
2"slightly"
3"very"
4"slowly"
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)
36.31% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1570
totalAiIsms20
found
0
word"silence"
count1
1
word"gloom"
count1
2
word"familiar"
count1
3
word"weight"
count2
4
word"oppressive"
count1
5
word"unsettled"
count1
6
word"etched"
count2
7
word"intricate"
count1
8
word"pulse"
count2
9
word"quickened"
count1
10
word"implication"
count1
11
word"stomach"
count1
12
word"racing"
count1
13
word"traced"
count1
14
word"flickered"
count1
15
word"wavering"
count1
16
word"jaw clenched"
count1
highlights
0"silence"
1"gloom"
2"familiar"
3"weight"
4"oppressive"
5"unsettled"
6"etched"
7"intricate"
8"pulse"
9"quickened"
10"implication"
11"stomach"
12"racing"
13"traced"
14"flickered"
15"wavering"
16"jaw clenched"
33.33% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches4
maxInWindow3
found
0
label"blood ran cold"
count1
1
label"eyes widened/narrowed"
count1
2
label"jaw/fists clenched"
count1
3
label"hung in the air"
count1
highlights
0"blood ran cold"
1"eyes widened"
2"jaw clenched"
3"hung heavy in the air"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences123
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount2
narrationSentences123
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences156
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
totalWords1559
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions12
unquotedAttributions0
matches(empty)
0.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions60
wordCount1178
uniqueNames10
maxNameDensity2.46
worstName"Quinn"
maxWindowNameDensity5.5
worstWindowName"Quinn"
discoveredNames
Tube2
Camden1
Harlow1
Quinn29
Harris1
Kowalski1
Eva19
Morris4
Veil1
Market1
persons
0"Camden"
1"Harlow"
2"Quinn"
3"Harris"
4"Kowalski"
5"Eva"
6"Morris"
places(empty)
globalScore0.269
windowScore0
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences77
glossingSentenceCount1
matches
0"looked like he’d rather be anywhere else"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1559
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences156
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs60
mean25.98
std22.64
cv0.871
sampleLengths
090
13
263
377
429
584
646
727
81
990
1017
1133
1211
1338
1414
1537
1624
1749
1882
198
2023
218
2215
2349
2429
255
2619
276
287
2943
304
3146
3210
3322
346
358
3644
3725
3815
3910
4012
4138
4234
4325
4430
458
4623
474
487
495
88.15% Passive voice overuse
Target: ≤2% passive sentences
passiveCount6
totalSentences123
matches
0"was frozen"
1"been—taken"
2"were scuffed"
3"been tied"
4"was gone"
5"was fixed"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs192
matches
0"was already tucking"
1"was coming"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount10
semicolonCount0
flaggedSentences10
totalSentences156
ratio0.064
matches
0"The beam of her torch cut through the gloom, illuminating the peeling posters on the walls—faded advertisements for long-forgotten plays and products, their edges curled like dead leaves."
1"And then there was the body—or what was left of it."
2"Just a single, clean puncture wound in the center of the chest, as if something had been—taken."
3"It twitched erratically, as if caught between invisible forces, before settling on a direction that made no sense—toward the solid wall of the station."
4"The red curls were a wild halo around her head, and she was already tucking a strand behind her left ear—a nervous habit Quinn had come to recognize over the past few months."
5"The official report had called it a tragic accident—Morris had fallen down a flight of stairs during a chase."
6"And beneath the nails—"
7"A circle with a jagged line through it—like a crude, hastily drawn rune."
8"For a moment, Quinn could have sworn she saw something move in the darkness—something with too many limbs, too many eyes."
9"And then, from the darkness beyond the platform, came a sound—soft, wet, like something dragging itself across the floor."
99.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1191
adjectiveStacks0
stackExamples(empty)
adverbCount49
adverbRatio0.04114189756507137
lyAdverbCount14
lyAdverbRatio0.011754827875734676
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences156
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences156
mean9.99
std7.41
cv0.742
sampleLengths
026
116
228
320
43
520
613
719
811
914
1022
118
126
1310
1417
1518
1611
179
1815
198
206
219
2220
2313
244
2517
265
2724
283
2913
303
315
323
331
348
3523
3633
373
3823
3917
4013
4120
426
435
449
4529
469
475
482
4935
45.51% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.25
totalSentences156
uniqueOpeners39
86.96% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences115
matches
0"Just a single, clean puncture"
1"Just solid masonry."
2"Then she saw it."
ratio0.026
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount25
totalSentences115
matches
0"She adjusted the worn leather"
1"It was the lack of"
2"His shoes were scuffed, the"
3"She reached into her coat"
4"She pulled it out."
5"It twitched erratically, as if"
6"She’d seen strange things in"
7"It was wrong."
8"She turned at the sound"
9"She was a researcher, an"
10"She trailed off, but the"
11"She’d seen the way his"
12"She pushed the memory away."
13"It all pointed to something"
14"She knelt again, this time"
15"It was thicker, almost tar-like."
16"She walked toward it, running"
17"She traced it with her"
18"she said, her voice tight"
19"He was a piece in"
ratio0.217
73.04% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount89
totalSentences115
matches
0"The abandoned Tube station beneath"
1"Detective Harlow Quinn stepped over"
2"The beam of her torch"
3"She adjusted the worn leather"
4"Something was wrong."
5"The call had come in"
6"The uniformed officers on scene"
7"The corpse lay sprawled near"
8"The face was frozen in"
9"It was the lack of"
10"Quinn crouched beside the body,"
11"The victim was male, mid-thirties,"
12"His shoes were scuffed, the"
13"A man who walked a"
14"A man who moved in"
15"She reached into her coat"
16"She pulled it out."
17"A small brass compass, its"
18"The needle didn’t point north."
19"It twitched erratically, as if"
ratio0.774
43.48% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences115
matches
0"If the Veil Market was"
ratio0.009
97.26% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences47
technicalSentenceCount3
matches
0"The victim was male, mid-thirties, dressed in a rumpled suit that had seen better days."
1"It twitched erratically, as if caught between invisible forces, before settling on a direction that made no sense—toward the solid wall of the station."
2"The way the coroner’s report had been inconclusive, as if the cause of death defied explanation."
0.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags10
uselessAdditionCount3
matches
0"She trailed, but the implication hung heavy in the air"
1"Eva adjusted, her fingers trembling slightly"
2"she said, her voice tight"
83.33% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags8
fancyCount3
fancyTags
0"muttered PC Harris (mutter)"
1"she muttered (mutter)"
2"Eva’s voice squeaked (squeak)"
dialogueSentences45
tagDensity0.178
leniency0.356
rawRatio0.375
effectiveRatio0.133
78.9089%