Run: 2026-09-25-01M3CKFJPV0N6CH6P2G65GKYG8

Run Details

Duration:
19.4s
Cost:
$0.016706
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="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <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> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. 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 rain came down in sheets, turning the Soho streets into a slick, shimmering maze. Detective Harlow Quinn’s boots splashed through puddles as she kept her eyes locked on the figure darting between the neon-lit storefronts. The suspect—a wiry man in a dark hoodie—moved with the desperate agility of someone who knew the cost of being caught. She had been tailing him for blocks, ever since he’d slipped out of The Raven’s Nest with a package tucked under his arm, his movements too quick, too deliberate to be innocent. Her breath came in controlled bursts, the cold air sharp in her lungs. Eighteen years on the force had honed her instincts, and every one of them screamed that this man was connected. Connected to the whispers she’d been chasing, the ones that had started after Morris died. The ones that had no place in a rational investigation. He ducked around a corner, and she followed, her leather watch snug against her wrist as she checked the time. 23:47. The streets were thinning out, the revellers long since retreated into bars or taxis. The only light came from the flickering green neon of The Raven’s Nest’s sign, its glow bleeding into the wet pavement. She rounded the corner just in time to see him yank open a rusted service door set into the side of a building, disappearing inside. Harlow didn’t hesitate. She lunged for the door, her fingers brushing the cold metal just before it swung shut. She pulled it open and stepped into darkness. The air was thick with the scent of damp stone and something else—something metallic, like old blood. Her torch flickered to life, the beam cutting through the gloom to reveal a narrow staircase descending into the earth. The walls were lined with peeling posters, their edges curled with age. The suspect’s footsteps echoed below, urgent, fading. She descended, her free hand trailing along the wall for balance. The stairs spiralled down, the temperature dropping with every step. The rain’s drumming faded, replaced by the distant hum of voices, the clink of glass, the low thrum of music. It wasn’t the underground she knew—the Tube tunnels, the maintenance access points. This was something else. The Veil Market. Her pulse quickened. She’d heard the rumours, of course. Every cop with more than a few years on the beat had. A black market beneath the city, shifting locations with the full moon, trading in things that didn’t make sense. Things that defied explanation. But she’d never had proof. Until now. The staircase opened into a vast, cavernous space. The abandoned Tube station was unrecognisable, transformed by the flickering glow of lanterns and the eerie luminescence of enchanted trinkets. Stalls lined the platform, their wares spread out on tables draped in velvet and silk. Bottles of swirling, iridescent liquid. Jars containing things that looked like they might still be alive. A man with too many teeth grinned at her from behind a display of silver charms, his eyes reflecting the light like a cat’s. Harlow’s grip tightened on her torch. She wasn’t armed—not properly. Her service weapon was locked in her desk drawer, per protocol for off-duty surveillance. But she had her wits, her training, her sheer stubborn refusal to let another case slip through her fingers. Not again. She scanned the crowd. The suspect was nowhere in sight. But the market was a labyrinth of shadows and movement, a place where people could vanish as easily as smoke. She stepped forward, her boots silent on the cracked tile. The air hummed with energy, the kind that raised the hairs on the back of her neck. A hand clamped down on her shoulder. She spun, her body coiling into a defensive stance before her brain caught up. Tomás Herrera stood there, his olive skin slick with rain, his dark curls plastered to his forehead. His Saint Christopher medallion glinted in the dim light, a silent testament to the life he’d left behind. Or the one he’d been forced into. “Detective,” he said, his voice low, urgent. “You shouldn’t be here.” Harlow didn’t lower her guard. “Herrera. Funny running into you. Again.” The last time had been outside a clinic in Whitechapel, where he’d been treating a man with a wound that shouldn’t have healed as fast as it did. She’d let him go. A mistake, maybe. Tomás’s warm brown eyes flicked over her shoulder, then back to her face. “You’re following him, aren’t you? The courier.” “You know him?” “Everyone here knows everyone. That’s the point.” He glanced around, his scarred forearm twitching as if itching to pull her deeper into the shadows. “This isn’t your world, Quinn. And it’s not kind to outsiders.” She bared her teeth. “My world is justice. And right now, justice is a man who just ran down here with something that doesn’t belong to him.” She nodded toward a stall where a woman in a long, tattered coat was slipping a bone token into the courier’s hand. The same kind of token Harlow had seen in Morris’s notes, the ones he’d been collecting before he died. “That’s my evidence. And I’m not leaving without it.” Tomás exhaled sharply. “You don’t understand what you’re walking into. The things they sell here—” He gestured to a nearby table where a glass orb pulsed with an inner light, casting eerie shadows on the faces of the onlookers. “They’re not just illegal. They’re *alive*.” Harlow’s jaw tightened. She’d seen enough in her career to know that some things defied logic. But she’d also learned that the supernatural was just another word for the things people did to exploit the vulnerable. And she wasn’t about to let fear stop her. “Then help me. You’re the only one here I trust.” For a moment, he looked like he might refuse. Then his expression darkened, resolved. “Fine. But we do this my way. No heroics. No drawing attention.” He jerked his chin toward a narrow alley between two stalls, where the courier had just slipped out of sight. “He’s heading for the back tunnels. If we lose him there, we lose him for good.” She didn’t need to be told twice. Harlow fell into step behind Tomás, her shoulders brushing against the rough stone walls as they moved deeper into the market’s underbelly. The crowd thinned, the stalls giving way to crates and discarded tarps. The air grew colder, the hum of voices fading into silence. Then she heard it—the scuffle of shoes on loose gravel. The courier was close. Tomás held up a hand, signalling her to stop. He pressed his ear to the wall, then motioned for her to follow. They turned a corner and found themselves in a long, narrow corridor lined with rusted pipes. At the far end, the courier was fumbling with a lock on a heavy metal door, his back to them. Harlow’s instincts roared. This was it. The moment to strike. She moved before she could second-guess herself, her stride quick and silent. Tomás hissed a curse behind her, but she was already closing the distance. The courier turned just as she reached for him. His eyes widened, and he bolted, shoving the door open and disappearing into the darkness beyond. Harlow didn’t hesitate. She lunged after him, her fingers scraping against the doorframe as she forced it open wider. The space beyond was a yawning black pit, the kind of darkness that seemed to swallow light. A set of rickety stairs descended into the abyss, the wood groaning under the courier’s fleeing steps. The air smelled of earth and something older, something that made her skin prickle. She took a step forward—and Tomás’s hand clamped around her wrist like a vice. “Don’t,” he said, his voice raw. “That’s not just a staircase. It’s a threshold.” Harlow yanked her arm free. “I don’t care what it is. He’s getting away.” “And you’ll be walking into a place you can’t come back from.” Tomás’s grip tightened, his fingers digging into her skin. “I’ve seen what’s down there, Quinn. Things that don’t just kill you. They *unmake* you.” She stared into the darkness, her breath coming in sharp, uneven bursts. The courier’s footsteps had faded, but she could still hear the echo of his panic, the rasp of his breathing. Evidence. Answers. The truth about Morris. But Tomás’s face was deadly serious. And for the first time in her career, Harlow Quinn felt the cold, creeping tendrils of doubt. She’d spent her life chasing justice. But what if justice wasn’t something she could outrun? What if it was something that would consume her, just like it had Morris? The door at the top of the stairs groaned, the sound of hinges protesting under the weight of the market’s secrets. She could still turn back. Walk away. Pretend she’d never seen this place, never known it existed. But then she thought of the case files on her desk, the ones with Morris’s notes scribbled in the margins. The ones that had led her here. Harlow set her jaw. “I’m going after him.” Tomás’s expression hardened. “Then I’m coming with you.” She didn’t argue. There was no time. Together, they stepped into the dark.
created_at"2026-09-25T15:38:27.425Z" 9/25/2026, 3:38:27 PM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency412
moderation_latency(null)
generation_time19419
tokens_prompt888
tokens_completion2349
native_tokens_prompt852
native_tokens_completion2057
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached128
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"
usage0.0167055
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790350707-N0SCT8vpwl4FUT2RhS49"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790350707-rrDehqTUxFDRwaZCUQ6N"
upstream_id"8bd9e8ddd9bf4d1cbfa10e7d3826b392"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"8bd9e8ddd9bf4d1cbfa10e7d3826b392"
is_byokfalse
latency412
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.0167055
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
totalTags8
adverbTagCount1
adverbTags
0"He glanced around [around]"
dialogueSentences21
tagDensity0.381
leniency0.762
rawRatio0.125
effectiveRatio0.095
96.76% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1544
totalAiIsmAdverbs1
found
0
adverb"sharply"
count1
highlights
0"sharply"
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)
44.95% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1544
totalAiIsms17
found
0
word"flickered"
count1
1
word"gloom"
count1
2
word"footsteps"
count2
3
word"echoed"
count1
4
word"pulse"
count1
5
word"quickened"
count1
6
word"velvet"
count1
7
word"silk"
count1
8
word"scanned"
count1
9
word"testament"
count1
10
word"flicked"
count1
11
word"pulsed"
count1
12
word"resolved"
count1
13
word"silence"
count1
14
word"echo"
count1
15
word"weight"
count1
highlights
0"flickered"
1"gloom"
2"footsteps"
3"echoed"
4"pulse"
5"quickened"
6"velvet"
7"silk"
8"scanned"
9"testament"
10"flicked"
11"pulsed"
12"resolved"
13"silence"
14"echo"
15"weight"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches2
maxInWindow1
found
0
label"eyes widened/narrowed"
count1
1
label"air was thick with"
count1
highlights
0"eyes widened"
1"The air was thick with"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences120
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences120
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)
analyzedSentences133
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen45
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans2
markdownWords2
totalWords1537
ratio0.001
matches
0"alive"
1"unmake"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions7
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions42
wordCount1356
uniqueNames14
maxNameDensity0.88
worstName"Harlow"
maxWindowNameDensity2
worstWindowName"Tomás"
discoveredNames
Soho1
Harlow12
Quinn2
Raven2
Nest2
Morris5
Tube2
Veil1
Market1
Herrera1
Saint1
Christopher1
Whitechapel1
Tomás10
persons
0"Harlow"
1"Quinn"
2"Raven"
3"Nest"
4"Morris"
5"Tube"
6"Herrera"
7"Saint"
8"Christopher"
9"Tomás"
places
0"Soho"
1"Market"
2"Whitechapel"
globalScore1
windowScore1
32.35% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences85
glossingSentenceCount4
matches
0"looked like they might still be alive"
1"as if itching to pull her deeper into the shadows"
2"looked like he might refuse"
3"darkness that seemed to swallow light"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1537
matches(empty)
91.48% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount3
totalSentences133
matches
0"screamed that this"
1"know that some"
2"learned that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs39
mean39.41
std24.4
cv0.619
sampleLengths
089
158
281
383
460
551
683
745
857
97
1056
1111
1246
1320
143
1535
1677
1745
1855
1962
2052
2114
2258
2335
2444
2548
2614
2714
2814
2936
3038
3123
3229
3338
3427
358
368
377
386
90.64% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences120
matches
0"being caught"
1"was connected"
2"were lined"
3"was locked"
4"been forced"
88.42% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs239
matches
0"were thinning"
1"was slipping"
2"was fumbling"
3"was already closing"
13.96% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount7
semicolonCount0
flaggedSentences6
totalSentences133
ratio0.045
matches
0"The suspect—a wiry man in a dark hoodie—moved with the desperate agility of someone who knew the cost of being caught."
1"The air was thick with the scent of damp stone and something else—something metallic, like old blood."
2"It wasn’t the underground she knew—the Tube tunnels, the maintenance access points."
3"She wasn’t armed—not properly."
4"Then she heard it—the scuffle of shoes on loose gravel."
5"She took a step forward—and Tomás’s hand clamped around her wrist like a vice."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1366
adjectiveStacks0
stackExamples(empty)
adverbCount35
adverbRatio0.02562225475841874
lyAdverbCount6
lyAdverbRatio0.004392386530014641
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences133
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences133
mean11.56
std7.95
cv0.688
sampleLengths
015
121
221
332
413
520
615
710
820
91
1014
1121
1225
133
1416
158
1617
1720
1812
197
2011
2110
2220
2312
244
253
263
276
2812
2919
304
315
322
338
3420
3515
365
3711
3824
396
404
4114
4219
432
444
456
4620
4710
4817
497
47.73% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.3181818181818182
totalSentences132
uniqueOpeners42
58.48% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences114
matches
0"Then his expression darkened, resolved."
1"Then she heard it—the scuffle"
ratio0.018
90.18% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount37
totalSentences114
matches
0"She had been tailing him"
1"Her breath came in controlled"
2"He ducked around a corner,"
3"She rounded the corner just"
4"She lunged for the door,"
5"She pulled it open and"
6"Her torch flickered to life,"
7"She descended, her free hand"
8"It wasn’t the underground she"
9"Her pulse quickened."
10"She’d heard the rumours, of"
11"She wasn’t armed—not properly."
12"Her service weapon was locked"
13"She scanned the crowd."
14"She stepped forward, her boots"
15"She spun, her body coiling"
16"His Saint Christopher medallion glinted"
17"he said, his voice low,"
18"She’d let him go."
19"He glanced around, his scarred"
ratio0.325
47.72% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount94
totalSentences114
matches
0"The rain came down in"
1"Detective Harlow Quinn’s boots splashed"
2"The suspect—a wiry man in"
3"She had been tailing him"
4"Her breath came in controlled"
5"The ones that had no"
6"He ducked around a corner,"
7"The streets were thinning out,"
8"The only light came from"
9"She rounded the corner just"
10"Harlow didn’t hesitate."
11"She lunged for the door,"
12"She pulled it open and"
13"The air was thick with"
14"Her torch flickered to life,"
15"The walls were lined with"
16"The suspect’s footsteps echoed below,"
17"She descended, her free hand"
18"The stairs spiralled down, the"
19"The rain’s drumming faded, replaced"
ratio0.825
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences114
matches(empty)
ratio0
95.24% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences60
technicalSentenceCount4
matches
0"The suspect—a wiry man in a dark hoodie—moved with the desperate agility of someone who knew the cost of being caught."
1"The only light came from the flickering green neon of The Raven’s Nest’s sign, its glow bleeding into the wet pavement."
2"A black market beneath the city, shifting locations with the full moon, trading in things that didn’t make sense."
3"The air smelled of earth and something older, something that made her skin prickle."
0.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags8
uselessAdditionCount3
matches
0"he said, his voice low, urgent"
1"he said, his voice raw"
2"Tomás’s grip tightened, his fingers digging into her skin"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences21
tagDensity0.095
leniency0.19
rawRatio0
effectiveRatio0
79.9304%